Re: [R] R: regression data set
Clark Allan wrote: i would like to give the class a practical assignment as well. could you suggest a good problem and the location of the data set/s? it would be good if the data set has been analysed by a number of other people so that students can see the different ways of tackling a regression problem. If you want some textbook examples I'd recommend Ripley and Venables's Modern Applied Statistics With S (VR bundle); Maindonald and Braun's Data Analysis and Graphics using R (DAAG package) Cheers, Kev -- Ko-Kang Kevin Wang PhD Student Centre for Bioinformation Science Building 27, Room 1004 Mathematical Sciences Institute (MSI) Australian National University Canberra, ACT 2601 Australia Homepage: http://wwwmaths.anu.edu.au/~wangk/ Ph (W): +61-2-6125-2431 Ph (H): +61-2-6125-7407 Ph (M): +61-40-451-8301 __ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
[R] xtable Questions
Hi,
These are two problems I've never seen when I used xtable() before...
R 1.9.1 for Windows XP, xtable version 1.2-3:
final.df
Loci ChrMarker Position P.values Deviance DF
1 Idd5 1 D1Mit181 42.6 0.0011 103.21 78
2 Idd6/19/20 6 D6Mit374 66.7 0.0014 104.29 78
3 Idd13 2 D2Mit490 64.5 0.002597.83 78
4Idd8/12 13 D14Mit109 24 0.0244 102.41 78
5 Idd14 14 D13Mit39 3.3 0.037995.92 78
6 Idd3/10/17/18 3 D3Mit257 49.20.068 105.45 78
7 Idd9 4 D4Mit233 69.9 0.1406 107.13 78
8 Idd15 5 D5Mit338 43.7 0.2196 107.67 78
9 Idd7 7 D7Mit101 45.9 0.460895.96 78
10 Idd2 9 D9Mit328 17.5 0.5125 107.25 78
11 Aire 10 D10Mit198 33.9 0.6457 106.13 78
12 Idd4 11 D11Mit298 37.2 0.9261 107.47 78
13 Idd21 18 D18Mit135 9.8 0.9272 107.67 78
xtable(final.df,
+caption = Summary for each Locus,
+label = tab:sumLocus)
Error in x + ifelse(x == 0, 1, 0) : non-numeric argument to binary
operator
is.data.frame(final.df)
[1] TRUE
final.df is a data frame, but I cannot understand what the error message
means about non-numeric argument to binary operator.
The other problem is:
one.df
Loci P.values
1Idd5 0.1147
2 Idd13 0.0085
3 Idd140.002
4 Idd8.120.042
5Idd7 0.0114
xtable(one.df,
+caption = Fitting without Interactions,
+label = tab:noI)
tab:noI
% latex table generated in R 1.9.1 by xtable 1.2-3 package
% Thu Sep 02 14:22:01 2004
\begin{table}[ht]
\begin{center}
\begin{tabular}{rll}
\hline
Loci P.values \\
\hline
1 Idd5 0.1147 \\
2Idd13 0.0085 \\
3Idd14 0.002 \\
4 Idd8.12 0.042 \\
5 Idd7 0.0114 \\
\hline
\end{tabular}
\caption{Fitting without Interactions}
\end{center}
\end{table}
is.data.frame(one.df)
[1] TRUE
I want to give the resulting LaTeX markup for one.df a label, namely
tab:noI, but instead of putting a \label{tab:noI}, it just put
tab:noI at the beginning of the output.
I've tried to completely clear the workspace, delete the .RData and
start fresh. But the problems still occur *_*.
Any help would be appreciated!
Kevin
--
Ko-Kang Kevin Wang
PhD Student
Centre for Mathematics and its Applications
Building 27, Room 1004
Mathematical Sciences Institute (MSI)
Australian National University
Canberra, ACT 0200
Australia
Homepage: http://wwwmaths.anu.edu.au/~wangk/
Ph (W): +61-2-6125-2431
Ph (H): +61-2-6125-7407
Ph (M): +61-40-451-8301
__
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[R] [OT]Example Data for Non-statisticians
(Sorry for the slightly off topic post) I'm giving a talk (on data mining) to some non-statisticians (who're all postgrad students, but a mixture of Science and Commerce majors). My intention is to show them the importance of statistics when doing data mining. What I'm thinking of doing is using, hopefully, two datasets. One from scientific area and another that is commercially-related. However, it would be nice if the datasets (or at least one of them) will violate some kind of basic statistical assumptions (in its raw form anyway) -- hence showing having a basic statistical knowledge is important. Also hopefully, I can introduce R to them (since many of them haven't heard of it yet). Does anyone have (or know where I can get) such data? It doesn't have to be huge,. Thanks! Kevin -- Ko-Kang Kevin Wang PhD Student Centre for Mathematics and its Applications Mathematical Sciences Institute (MSI) Australian National University Canberra, ACT 0200 Australia Homepage: http://wwwmaths.anu.edu.au/~wangk/ Ph (W): +61-2-6125-2431 Ph (H): +61-2-6125-7407 Ph (M): +61-40-451-8301 __ [EMAIL PROTECTED] mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
[R] Two xtable Questions
Hi,
These are two problems I've never seen when I used xtable() before...
R 1.9.1 for Windows XP, xtable version 1.2-3:
final.df
Loci ChrMarker Position P.values Deviance DF
1 Idd5 1 D1Mit181 42.6 0.0011 103.21 78
2 Idd6/19/20 6 D6Mit374 66.7 0.0014 104.29 78
3 Idd13 2 D2Mit490 64.5 0.002597.83 78
4Idd8/12 13 D14Mit109 24 0.0244 102.41 78
5 Idd14 14 D13Mit39 3.3 0.037995.92 78
6 Idd3/10/17/18 3 D3Mit257 49.20.068 105.45 78
7 Idd9 4 D4Mit233 69.9 0.1406 107.13 78
8 Idd15 5 D5Mit338 43.7 0.2196 107.67 78
9 Idd7 7 D7Mit101 45.9 0.460895.96 78
10 Idd2 9 D9Mit328 17.5 0.5125 107.25 78
11 Aire 10 D10Mit198 33.9 0.6457 106.13 78
12 Idd4 11 D11Mit298 37.2 0.9261 107.47 78
13 Idd21 18 D18Mit135 9.8 0.9272 107.67 78
xtable(final.df,
+caption = Summary for each Locus,
+label = tab:sumLocus)
Error in x + ifelse(x == 0, 1, 0) : non-numeric argument to binary
operator
is.data.frame(final.df)
[1] TRUE
final.df is a data frame, but I cannot understand what the error message
means about non-numeric argument to binary operator.
The other problem is:
one.df
Loci P.values
1Idd5 0.1147
2 Idd13 0.0085
3 Idd140.002
4 Idd8.120.042
5Idd7 0.0114
xtable(one.df,
+caption = Fitting without Interactions,
+label = tab:noI)
tab:noI
% latex table generated in R 1.9.1 by xtable 1.2-3 package
% Thu Sep 02 14:22:01 2004
\begin{table}[ht]
\begin{center}
\begin{tabular}{rll}
\hline
Loci P.values \\
\hline
1 Idd5 0.1147 \\
2Idd13 0.0085 \\
3Idd14 0.002 \\
4 Idd8.12 0.042 \\
5 Idd7 0.0114 \\
\hline
\end{tabular}
\caption{Fitting without Interactions}
\end{center}
\end{table}
is.data.frame(one.df)
[1] TRUE
I want to give the resulting LaTeX markup for one.df a label, namely
tab:noI, but instead of putting a \label{tab:noI}, it just put tab:noI
at the beginning of the output.
I've tried to completely clear the workspace, delete the .RData and start
fresh. But the problems still occur *_*.
Any help would be appreciated!
Kevin
Ko-Kang Kevin Wang
PhD Student
Centre for Mathematics and its Applications
Building 27, Room 1004
Mathematical Sciences Institute (MSI)
Australian National University
Canberra, ACT 0200
Australia
Homepage: http://wwwmaths.anu.edu.au/~wangk/
Ph (W): +61-2-6125-2431
Ph (H): +61-2-6125-7407
Ph (M): +61-40-451-8301
__
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Re: [R] newsgroup on R
Hi, On Thu, 2 Sep 2004, Bin Jiang wrote: HI, I wonder if there is a newsgroup on R available, instead of emaillist which I have to receive mails daily. AFAIK the answer is no. I think this has been brought up and discussed a few years ago and the idea was kind of...rejected. Kevin Ko-Kang Kevin Wang PhD Student Centre for Mathematics and its Applications Building 27, Room 1004 Mathematical Sciences Institute (MSI) Australian National University Canberra, ACT 0200 Australia Homepage: http://wwwmaths.anu.edu.au/~wangk/ Ph (W): +61-2-6125-2431 Ph (H): +61-2-6125-7407 Ph (M): +61-40-451-8301 __ [EMAIL PROTECTED] mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
Re: [R] a little question about R
Hi, On Wed, 8 Sep 2004, [gb2312] ÃÏÐÀ wrote: Hello,sir: Here's a little question about R which needs your help.Thanks in advance. If I wanna make a sequence just like a,b,c,d (In other words,a vector consists of 4 characters :a,b,c,d ).How can I do it in a shortcut manner? Yes,I can do it as following: c(a,b,c,d) and the result is:[1] a b c d. But I remember there's a shortcut manner to do the same thing,something like How about letters[1:4] Ko-Kang Kevin Wang PhD Student Centre for Mathematics and its Applications Building 27, Room 1004 Mathematical Sciences Institute (MSI) Australian National University Canberra, ACT 0200 Australia Homepage: http://wwwmaths.anu.edu.au/~wangk/ Ph (W): +61-2-6125-2431 Ph (H): +61-2-6125-7407 Ph (M): +61-40-451-8301 __ [EMAIL PROTECTED] mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
Re: [R] download of 1.9.1
Hi, On Tue, 7 Sep 2004, Kathy DeRiemer wrote: Hi there, I downloaded version 1.9.1 WinZip file, 9.367 bytes ( so I can update my R Uit doesn't sound right, 9 bytes and use the vcd package) but cannot get the download from your Web site to unzip and install. So silly! The error message is : Error reading header after processing 0 entries. I tried downloading from 3 different URLs, all yielding the same message when I try to unzip and install the file. Well, since you mentioned WinZip I'm assuming you are using R under Windows. IN which case why don't you update the package from Rgui using the menu? See the FAQ... Cheers, Kevin Ko-Kang Kevin Wang PhD Student Centre for Mathematics and its Applications Building 27, Room 1004 Mathematical Sciences Institute (MSI) Australian National University Canberra, ACT 0200 Australia Homepage: http://wwwmaths.anu.edu.au/~wangk/ Ph (W): +61-2-6125-2431 Ph (H): +61-2-6125-7407 Ph (M): +61-40-451-8301 __ [EMAIL PROTECTED] mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
Re: [R] howto load functions?
Hi, Loren Grimes wrote: I realize that this is pretty basic, and I should be able to figure this out: but, how do I write a function [with a text editor] and then load it into an interactive R session? Thanks Try ?source HTH, Kevin -- Ko-Kang Kevin Wang PhD Student Centre for Mathematics and its Applications Building 27, Room 1004 Mathematical Sciences Institute (MSI) Australian National University Canberra, ACT 0200 Australia Homepage: http://wwwmaths.anu.edu.au/~wangk/ Ph (W): +61-2-6125-2431 Ph (H): +61-2-6125-7407 Ph (M): +61-40-451-8301 __ [EMAIL PROTECTED] mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
Re: [R] Newbie q. need some help understanding this code.
Hi,
sean kim wrote:
thanks for any insights or other comments.
I would suggest that you run the code line by line, to see what it does
yourself. It is the best way to learn!
library(stepfun)
This just loads the package stepfun.
lv - function(N=1000,cvec=c(1,0.005,0.6),x=c(50,100))
{
Declaration of a function named lv, where N, cvec and x are the
parameters/arguments with default values.
m-length(cvec)
m is a new variable, with in this case is just a number, the length of
the vector cvec. In this case, 3.
n-length(x)
Ditto.
xmat-matrix(nrow=N+1,ncol=n)
Generate a matrix with N + 1 (1001) rows and n columns.
tvec-vector(numeric,N)
h-vector(numeric,m)
Generating two vectors.
t-0
xmat[1,]-x
Assign x to the first row of the xmat matrix.
for (i in 1:N) {
h[1]-cvec[1]*x[1]
The first element in cvec and x, multiply them together and the result
becomes the first element of h.
h[2]-cvec[2]*x[1]*x[2]
h[3]-cvec[3]*x[2]
Ditto.
h0=sum(h)
Get the sum of h.
tp-rexp(1,h0)
Generating an exponential random number with a rate of h0.
t-t+tp
u-runif(1,0,1)
Generating a uniform random number, [0, 1]
if ( u h[1]/h0 ) {
x[1] - x[1]+1
If the uniform random number, u, is smaller than h[1]/h0 then do...
otherwise do the following...
} else if ( u (h[1]+h[2])/h0 ) {
x[1] - x[1]-1
x[2] - x[2]+1
} else {
x[2] - x[2]-1
}
xmat[i+1,]-x
Increment to the next row.
tvec[i]-t
}
list(stepfun(tvec,xmat[,1]),stepfun(tvec,xmat[,2]))
}
Put things together into a list.
Again, check these line by line and you'll have a better understanding!
Kev
--
Ko-Kang Kevin Wang
PhD Student
Centre for Mathematics and its Applications
Building 27, Room 1004
Mathematical Sciences Institute (MSI)
Australian National University
Canberra, ACT 0200
Australia
Homepage: http://wwwmaths.anu.edu.au/~wangk/
Ph (W): +61-2-6125-2431
Ph (H): +61-2-6125-7407
Ph (M): +61-40-451-8301
__
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[R] sapply() with cat()
Hi,
Suppose I've got a data frame:
inter.df
V1 V2 V3 V4 V5 V6 V7 V8 V9 V10 V11 V12
1 3.3 NA NA NA NA NA NA NA NA NA NA NA
2 0.0 0.1 NA NA NA NA NA NA NA NA NA NA
3 1.0 0.9 0.2 NA NA NA NA NA NA NA NA NA
4 1.6 0.0 2.9 0.7 NA NA NA NA NA NA NA NA
5 0.0 0.1 2.9 0.1 0.1 NA NA NA NA NA NA NA
6 2.4 1.0 0.6 0.4 1.9 0.1 NA NA NA NA NA NA
7 2.8 1.4 1.2 7.5 0.0 0.0 4.2 NA NA NA NA NA
8 0.3 3.1 0.8 3.7 5.7 0.0 0.8 0.0 NA NA NA NA
9 0.1 2.9 0.3 1.3 0.2 0.2 0.5 1.4 0.9 NA NA NA
10 0.8 2.6 0.0 0.0 0.1 4.1 0.8 4.3 0.6 2.2 NA NA
11 0.0 4.0 0.0 0.3 0.5 0.9 0.0 1.5 0.2 0.7 0.8 NA
12 0.6 0.8 0.3 0.0 0.2 1.2 0.0 0.8 1.5 0.9 0.4 0
foo - function(x) {
+ ifelse(x 3.8, NA, x)
+ }
sapply(inter.df, foo)
V1 V2 V3 V4 V5 V6 V7 V8 V9 V10 V11 V12
[1,] 3.3 NA NA NA NA NA NA NA NA NA NA NA
[2,] 0.0 0.1 NA NA NA NA NA NA NA NA NA NA
[3,] 1.0 0.9 0.2 NA NA NA NA NA NA NA NA NA
[4,] 1.6 0.0 2.9 0.7 NA NA NA NA NA NA NA NA
[5,] 0.0 0.1 2.9 0.1 0.1 NA NA NA NA NA NA NA
[6,] 2.4 1.0 0.6 0.4 1.9 0.1 NA NA NA NA NA NA
[7,] 2.8 1.4 1.2 NA 0.0 0.0 NA NA NA NA NA NA
[8,] 0.3 3.1 0.8 3.7 NA 0.0 0.8 0.0 NA NA NA NA
[9,] 0.1 2.9 0.3 1.3 0.2 0.2 0.5 1.4 0.9 NA NA NA
[10,] 0.8 2.6 0.0 0.0 0.1 NA 0.8 NA 0.6 2.2 NA NA
[11,] 0.0 NA 0.0 0.3 0.5 0.9 0.0 1.5 0.2 0.7 0.8 NA
[12,] 0.6 0.8 0.3 0.0 0.2 1.2 0.0 0.8 1.5 0.9 0.4 0
Up to here, sapply() does what I want, replacing values that are greater
than 3.8 to NA, as per my foo() function. But...
goo - function(x) {
+ ifelse(x 3.8, cat(\\textbf{, x, }, sep = ), x)
+ }
sapply(inter.df, goo)
\textbf{NA0.10.900.111.43.12.92.640.8}Error in [-(`*tmp*`, test,
value = rep(yes, length.out = length(ans))[test]) :
incompatible types
If instead whenever I get a value that's greater than 3.8 I want to
change it what goo() does, e.g. the value 4.0 should become:
\textbf{4.0}
but I got the above error.
What I'm intending is to then pass the inter.df (with the \textbf{}
markups) into xtable() so the values will be bolded in the resulting
LaTeX table (as so far, I cannot see how I can achieve bolding only
certain numbers with xtable() alone).
Any suggestions will be welcome!
Kevin
--
Ko-Kang Kevin Wang
PhD Student
Centre for Mathematics and its Applications
Building 27, Room 1004
Mathematical Sciences Institute (MSI)
Australian National University
Canberra, ACT 0200
Australia
Homepage: http://wwwmaths.anu.edu.au/~wangk/
Ph (W): +61-2-6125-2431
Ph (H): +61-2-6125-7407
Ph (M): +61-40-451-8301
__
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[R] Using eval() more efficiently?
Hi, Suppose I have a vector: names.select [1] Idd13 Idd14 Idd8.12 Idd7 automatically generated by some selection criteria. Now, if I have a data frame with many variables, of which the variables in names.select are also variables from the data frame. e.g. all.df[1:5,] Mouse Idd5 Idd6.19.20 Idd13 Idd14 Idd8.12 Idd3.10.17.18 Idd9 1 904 F1NOD NODF1 NODF1 NOD 2 934 NOD F1F1F1 F1 NOD NOD 3 950 NODNODF1 NOD F1F1 NOD 4 977 F1NOD NODF1 F1F1 F1 5 1050 F1 F1 NOD NOD NOD NOD F1 Idd15 Idd7 Idd2 Aire Idd4 Idd21 Cross 1F1 NOD NOD NOD NOD NOD 1 2 NOD NOD F1 F1 NODF1 1 3 NOD NOD F1 F1 NOD NOD 1 4 NOD F1 NOD NOD NOD NOD 1 5 NOD F1 F1 F1 NODF1 1 If I want to use the information from names.select to fit a glm() on Cross, I can do something like: one.glm2 - glm(eval(substitute(Cross ~ x1 + x2 + x3 + x4, + list(x1 = as.name(names.select[1]), +x2 = as.name(names.select[2]), +x3 = as.name(names.select[3]), +x4 = as.name(names.select[4], +data = all.df, family = binomial) which does exactly what I want. However, this is kind of inefficient as if my selection criteria change, the variables being selected in names.select may change and it will make my eval() from one.glm2 invalid. Is there a way to solve this? e.g. if names.select has got 5 elements then I'd want to fit something like: one.glm2 - glm(eval(substitute(Cross ~ x1 + x2 + x3 + x4 + x5, list(x1 = as.name(names.select[1]), x2 = as.name(names.select[2]), x3 = as.name(names.select[3]), x4 = as.name(names.select[4]), x5 = as.name(names.select[5], data = all.df, family = binomial) (What I'm doing is writing a function which let's the user determine a selection criteria, hence names.select will be unknown -- and so far I'm very puzzled about how I can then use the information in names.select into my one.glm2...*_*. Cheers, Kevin Ko-Kang Kevin Wang PhD Student Centre for Mathematics and its Applications Building 27, Room 1004 Mathematical Sciences Institute (MSI) Australian National University Canberra, ACT 0200 Australia Homepage: http://wwwmaths.anu.edu.au/~wangk/ Ph (W): +61-2-6125-2431 Ph (H): +61-2-6125-7407 Ph (M): +61-40-451-8301 __ [EMAIL PROTECTED] mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
Re: [R] multinomial logistic regression
array chip wrote: I think glm() can only handle binary response variable, That's not true, have you looked at ?glm and ?family ? HTH, Kevin -- Ko-Kang Kevin Wang PhD Student Centre for Mathematics and its Applications Building 27, Room 1004 Mathematical Sciences Institute (MSI) Australian National University Canberra, ACT 0200 Australia Homepage: http://wwwmaths.anu.edu.au/~wangk/ Ph (W): +61-2-6125-2431 Ph (H): +61-2-6125-7407 Ph (M): +61-40-451-8301 __ [EMAIL PROTECTED] mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
Re: [R] A question in R
Hi, On Tue, 12 Oct 2004, Kevin Bartz wrote: R looks less than fondly on Excel files. The easiest solution for you will be to export your Excel file to a tab-delimited text format (Save - (.txt) Tab-delimited Text), and then use read.delim as you did. Does that make sense? The alternative (tricky but more convinient in the long run) is to use the read.xls() function from gregmisc bundle. Cheers, Kevin Ko-Kang Kevin Wang PhD Student Centre for Mathematics and its Applications Building 27, Room 1004 Mathematical Sciences Institute (MSI) Australian National University Canberra, ACT 0200 Australia Homepage: http://wwwmaths.anu.edu.au/~wangk/ Ph (W): +61-2-6125-2431 Ph (H): +61-2-6125-7407 Ph (M): +61-40-451-8301 __ [EMAIL PROTECTED] mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
Re: [R] (no subject)
Hi, On Tue, 28 Sep 2004, YiYao_Jiang wrote: Hello everybody: I can't setup a library for some functions. Can anybody kindly give me an example about setup a library. From build a package to library. I am guessing you meant you want to compile a package from source? Have you looked at Writing R Extensions? HTH, Kevin Ko-Kang Kevin Wang PhD Student Centre for Mathematics and its Applications Building 27, Room 1004 Mathematical Sciences Institute (MSI) Australian National University Canberra, ACT 0200 Australia Homepage: http://wwwmaths.anu.edu.au/~wangk/ Ph (W): +61-2-6125-2431 Ph (H): +61-2-6125-7407 Ph (M): +61-40-451-8301 __ [EMAIL PROTECTED] mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
Re: [R] Retrieving objects from functions...
Hi,
On Thu, 30 Sep 2004, Jonathan Harris wrote:
I've written a program that involves a loop that creates a matrix. I'd
like to be able to manipulate that matrix on my R desktop, but after I
run the function, that matrix does not appear when I type ls(). How can
I make that matrix become an object that I can manipulate?
If I understand you right, you want something like:
foo - function() {
goo - matrix(1:10, nrow = 5, ncol = 2)
}
then be able to call goo after running foo()? If this is what you want,
then you need to do something like:
foo - function() {
goo - matrix(1:10, nrow = 5, ncol = 2)
}
to force goo to become a global variable, instead of a local variable to
foo().
HTH,
Kevin
Ko-Kang Kevin Wang
PhD Student
Centre for Mathematics and its Applications
Building 27, Room 1004
Mathematical Sciences Institute (MSI)
Australian National University
Canberra, ACT 0200
Australia
Homepage: http://wwwmaths.anu.edu.au/~wangk/
Ph (W): +61-2-6125-2431
Ph (H): +61-2-6125-7407
Ph (M): +61-40-451-8301
__
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Re: [R] Excluding data in R
Hi, On Sun, 3 Oct 2004, Laura Collins wrote: How do you exclude outliers from a set of data? Your question is too vague. I'm assuming you have a data frame and already know exactly which observations are the outlier(s). If your data frame is called foo.df, and say observation 5 is an outlier, then something like: foo.df[-5, ] will exclude it. Kevin Ko-Kang Kevin Wang PhD Student Centre for Mathematics and its Applications Building 27, Room 1004 Mathematical Sciences Institute (MSI) Australian National University Canberra, ACT 0200 Australia Homepage: http://wwwmaths.anu.edu.au/~wangk/ Ph (W): +61-2-6125-2431 Ph (H): +61-2-6125-7407 Ph (M): +61-40-451-8301 __ [EMAIL PROTECTED] mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
Re: [R] Re:How to create a R -application
Hi, On Thu, 7 Oct 2004, Kunal Shetty wrote: Example for calculating the mean of a data set x - c(8,11,16,18,6,4,20,25,9,13) u - mean(x) u R is an interpreted language, not a compiled one like C++ or Java. Therefore you don't compile it. And for such a simple example, there isn't much need in doing so. However, compilation may come in handy when you are running simulations and/or with some long loops, as interpreted languages aren't really good at handling loops -- although you can get around with many loops by vectorisation. I think Luke Tierney is working on an R Compiler, which will allow you to compile such simulation and will decrease the running time a lot...but I'm not sure when it will be released. Cheers, Kevin Ko-Kang Kevin Wang PhD Student Centre for Mathematics and its Applications Building 27, Room 1004 Mathematical Sciences Institute (MSI) Australian National University Canberra, ACT 0200 Australia Homepage: http://wwwmaths.anu.edu.au/~wangk/ Ph (W): +61-2-6125-2431 Ph (H): +61-2-6125-7407 Ph (M): +61-40-451-8301 __ [EMAIL PROTECTED] mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
Re: [R] library gregmisc
Hi, On Mon, 25 Oct 2004, Anna Maria Paganoni wrote: I write to ask you an help about the package gregmisc. I saw the instructions, and I need some functionalities of this package, but I am unable ti download it. On friday I was able to download thte .zip, but R does not install this package, today there is no possibility to download it. What do you mean R doesn't install the bundle? How did you try to install it? Kev Ko-Kang Kevin Wang PhD Student Centre for Mathematics and its Applications Building 27, Room 1004 Mathematical Sciences Institute (MSI) Australian National University Canberra, ACT 0200 Australia Homepage: http://wwwmaths.anu.edu.au/~wangk/ Ph (W): +61-2-6125-2431 Ph (H): +61-2-6125-7407 Ph (M): +61-40-451-8301 __ [EMAIL PROTECTED] mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
[R] Finding out the number of times a loop has run
Hi,
Suppose I have:
for(i in 1:10)
rnorm(10)
(just a fake example, as my actual example is too long)
Is it possible to get the loop to print out i each time it has run?
Something like:
for(i in 1:10) {
print(i)
rnorm(10)
}
will only print i after the loop is completed. But if I want to print out
i whenever it re-enters the loop, is it possible (so I know how many times
the loop has been run)?
Cheers,
Kevin
Ko-Kang Kevin Wang
PhD Student
Centre for Mathematics and its Applications
Building 27, Room 1004
Mathematical Sciences Institute (MSI)
Australian National University
Canberra, ACT 0200
Australia
Homepage: http://wwwmaths.anu.edu.au/~wangk/
Ph (W): +61-2-6125-2431
Ph (H): +61-2-6125-7407
Ph (M): +61-40-451-8301
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Re: [R] Finding out the number of times a loop has run
Hi, On Thu, 4 Nov 2004, Peter Dalgaard wrote: Kevin, you must have seen this on the list before! Either use flush.console() or turn off the output buffering (Windows FAQ 6.3). Whoopsssorry, I must be tiredneed another cup of coffee. Kev Ko-Kang Kevin Wang PhD Student Centre for Mathematics and its Applications Building 27, Room 1004 Mathematical Sciences Institute (MSI) Australian National University Canberra, ACT 0200 Australia Homepage: http://wwwmaths.anu.edu.au/~wangk/ Ph (W): +61-2-6125-2431 Ph (H): +61-2-6125-7407 Ph (M): +61-40-451-8301 __ [EMAIL PROTECTED] mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
Re: [R] SAS or R software
Hi, On Sat, 20 Nov 2004, neela v wrote: Hi all there Can some one clarify me on this issue, features wise which is better R or SAS, leaving the commerical aspect associated with it. I suppose there are few people who have worked on both R and SAS and wish they would be able to help me in deciding on this. R is THE one to use when it comes to graphics. So far, I haven't seen any other software that can produce better graphs (and I've used SAS, Minitab, Excel, Genstat...etc). It's programming feature, IMHO, is also neater than SAS's procedure-oriented programming. Cheers, Kevin Ko-Kang Kevin Wang PhD Student Centre for Mathematics and its Applications Building 27, Room 1004 Mathematical Sciences Institute (MSI) Australian National University Canberra, ACT 0200 Australia Homepage: http://wwwmaths.anu.edu.au/~wangk/ Ph (W): +61-2-6125-2431 Ph (H): +61-2-6125-7407 Ph (M): +61-40-451-8301 __ [EMAIL PROTECTED] mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
Re: [R] classification using logistic regression
Hi, On Mon, 27 Dec 2004, Rajdeep Das wrote: I would like to do classification using logistic regression. Which R package can I use? Have you tried glm() function? Also is there any package for feature selection for logistic regression based method? Do you mean model selection methods like forward selection? If so, try step() HTH, Kevin Ko-Kang Kevin Wang PhD Student Centre for Mathematics and its Applications Building 27, Room 1004 Mathematical Sciences Institute (MSI) Australian National University Canberra, ACT 0200 Australia Homepage: http://wwwmaths.anu.edu.au/~wangk/ Ph (W): +61-2-6125-2431 Ph (H): +61-2-6125-7407 Ph (M): +61-40-451-8301 __ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
Re: [R] (no subject)
Hi, On Wed, 12 Jan 2005, Bigby wrote: Hello, numerical.summary(Data), which didnt work, he suggested we try library(s20x) first, which came up with an error on my console. I have version 2.0.1 of R library(s20x) is a package written by the Department of Statistics at the University of Auckland. It is used for their STATS 201/208 courses. It is not on CRAN. You may need to contact them for it. But you can get most of it using other commands. From memory it simply combines several other R functions, such as summary(), quantile()...etc. HTH, Kevin Ko-Kang Kevin Wang PhD Student Centre for Mathematics and its Applications Building 27, Room 1004 Mathematical Sciences Institute (MSI) Australian National University Canberra, ACT 0200 Australia Homepage: http://wwwmaths.anu.edu.au/~wangk/ Ph (W): +61-2-6125-2431 Ph (H): +61-2-6125-7407 Ph (M): +61-40-451-8301 __ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
Re: [R] Barplot - Can't figure it out
Hi, T Petersen wrote: Hi, I have two catagorical vectors like this; x = c(1, 2, 4, 2, 1) y = c(2, 4, 2 ,4, 1) I want to set up a barplot with the catagories 1-4 horizontally and number of occurances vertically for each vector x,y. I've tried boxplot(table(x,y), beside=T) and boxplot(c(x,y), beside=T) Have you tried barplot(), instead of boxplot()??? Cheers, Kev -- Ko-Kang Kevin Wang PhD Student Centre for Mathematics and its Applications Building 27, Room 1004 Mathematical Sciences Institute (MSI) Australian National University Canberra, ACT 0200 Australia Homepage: http://wwwmaths.anu.edu.au/~wangk/ Ph (W): +61-2-6125-2431 Ph (H): +61-2-6125-7407 Ph (M): +61-40-451-8301 __ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
RE: [R] text editor for R
Hi, Uwe would be the authority on this 8-), but my impression is that if you keep two separate shortcuts, you should be fine. The one for R-WinEdt has flags that sets it up for R, which should not be used in the one for MikTeX. I think Andy is correct. A few years ago (back in the dark ages -- before I discovered Emacs/ESS), I had two short cuts, one calls R-WinEdt (i.e. with flags...etc) and the other with just a normal WinEdt icon. However, I *think* now you can interact R-WinEdt within R directly (I tried the new version about 2 ~ 3 months ago just for fun, and that seemed to be the case, but I can't quite remember *_*). Cheers, Kevin Ko-Kang Kevin Wang PhD Student Centre for Mathematics and its Applications Building 27, Room 1004 Mathematical Sciences Institute (MSI) Australian National University Canberra, ACT 0200 Australia Homepage: http://wwwmaths.anu.edu.au/~wangk/ Ph (W): +61-2-6125-2431 Ph (H): +61-2-6125-7411 Ph (M): +61-40-451-8301 __ [EMAIL PROTECTED] mailing list https://www.stat.math.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
Re: [R] Importing an Excel file
Hi, On Thu, 8 Jul 2004, [iso-8859-1] Vito Ricci wrote: Hi, I'm trying to use read.xls() function to import Excel data, but I've this error: Error in system(cmd, intern = !verbose) : perl not found What happens? It means it cannot find Perl. You need Perl installed (and in your Path) in your system. Kev Ko-Kang Kevin Wang PhD Student Centre for Mathematics and its Applications Building 27, Room 1004 Mathematical Sciences Institute (MSI) Australian National University Canberra, ACT 0200 Australia Homepage: http://wwwmaths.anu.edu.au/~wangk/ Ph (W): +61-2-6125-2431 Ph (H): +61-2-6125-7411 Ph (M): +61-40-451-8301 __ [EMAIL PROTECTED] mailing list https://www.stat.math.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
Re: [R] How to pass strings to functions?
Please do not use the subject to ask a question without clarifying it! So what exactly do you want? Can you give some more descriptions? Kev Ko-Kang Kevin Wang PhD Student Centre for Mathematics and its Applications Building 27, Room 1004 Mathematical Sciences Institute (MSI) Australian National University Canberra, ACT 0200 Australia Homepage: http://wwwmaths.anu.edu.au/~wangk/ Ph (W): +61-2-6125-2431 Ph (H): +61-2-6125-7411 Ph (M): +61-40-451-8301 __ [EMAIL PROTECTED] mailing list https://www.stat.math.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
Re: [R] Can R work on very large of data?
Hi On Wed, 21 Jul 2004, Hayashi Soichi - shayas wrote: Is there anyway I can tweak R around so that it will start processing as data comes and not load everthing on memory at once? The reason for this is Have you read through R Data Import/Export? There are several other ways, to name a few: scan() and RODBC -- I haven't used the later though. Cheers, Kevin Ko-Kang Kevin Wang PhD Student Centre for Mathematics and its Applications Building 27, Room 1004 Mathematical Sciences Institute (MSI) Australian National University Canberra, ACT 0200 Australia Homepage: http://wwwmaths.anu.edu.au/~wangk/ Ph (W): +61-2-6125-2431 Ph (H): +61-2-6125-7411 Ph (M): +61-40-451-8301 __ [EMAIL PROTECTED] mailing list https://www.stat.math.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
Re: [R] calibration/validation sets
Hi, On Sat, 14 Aug 2004, Peyuco Porras Porras . wrote: Hi; Does anyone know how to create a calibration and validation set from a particular dataset? I have a dataframe with nearly 20,000 rows! and I would like to select (randomly) a subset from the original dataset (...I found how to do that) to use as calibration set. However, I don't know how to remove this calibration set from the original dataframe in order to get my validation set.Any hint will be greatly appreciated. A really quick way, suppose you want to have 30% of your dataset as the validation set: iris.id = sample(nrow(iris), nrow(iris) * 0.3) iris.valid = iris[iris.id, ] iris.train = iris[-iris.id, ] nrow(iris.valid) [1] 45 nrow(iris.train) [1] 105 The first line takes a sample of 30% of the number of rows in the Iris data. The second line does a subetting of those samples -- the validation set. The third takes what's left -- the training set. This is perhaps not efficient and the code can definitely be simplified...but it's Sunday morning and I haven't had my morning coffee yet :D Cheers, Kevin Ko-Kang Kevin Wang PhD Student Centre for Mathematics and its Applications Building 27, Room 1004 Mathematical Sciences Institute (MSI) Australian National University Canberra, ACT 0200 Australia Homepage: http://wwwmaths.anu.edu.au/~wangk/ Ph (W): +61-2-6125-2431 Ph (H): +61-2-6125-7407 Ph (M): +61-40-451-8301 __ [EMAIL PROTECTED] mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
Re: [R] plot.table on R 1.9.1
Hi, On Mon, 16 Aug 2004, Meinhard GMX wrote: Hello! What is wrong on my system? I have downloaded today R 1.9.1 on my PC with Windows. plot.table isn't available in package base and neither in package graphics (as suggested after ?plot.table). You should not use plot.table. Use plot(x) where x is of table object and it should work. Cheers, Kevin Ko-Kang Kevin Wang PhD Student Centre for Mathematics and its Applications Building 27, Room 1004 Mathematical Sciences Institute (MSI) Australian National University Canberra, ACT 0200 Australia Homepage: http://wwwmaths.anu.edu.au/~wangk/ Ph (W): +61-2-6125-2431 Ph (H): +61-2-6125-7407 Ph (M): +61-40-451-8301 __ [EMAIL PROTECTED] mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
Re: [R] adding sem to a plot
Hi, On Mon, 16 Aug 2004, Luis Rideau Cruz wrote: R-help, I have a barplot and I wish to add standard erros (or deviations) bars to it. How? Marc Schwartz has an article on this in R News 3/2 (October 2003). HTH, Kevin Ko-Kang Kevin Wang PhD Student Centre for Mathematics and its Applications Building 27, Room 1004 Mathematical Sciences Institute (MSI) Australian National University Canberra, ACT 0200 Australia Homepage: http://wwwmaths.anu.edu.au/~wangk/ Ph (W): +61-2-6125-2431 Ph (H): +61-2-6125-7407 Ph (M): +61-40-451-8301 __ [EMAIL PROTECTED] mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
Re: [R] How do I add rows to a table?
Hi, On Wed, 18 Aug 2004, Beverly Seavey wrote: inp1 - scan(data1,list(0,0)) inp2 - scan(data2,list(0,0)) allInp - c(inp1,inp2) I get a table with 4 columns. If I understand you correctly... Have you tried cbind()? Cheers, Kevin Ko-Kang Kevin Wang PhD Student Centre for Mathematics and its Applications Building 27, Room 1004 Mathematical Sciences Institute (MSI) Australian National University Canberra, ACT 0200 Australia Homepage: http://wwwmaths.anu.edu.au/~wangk/ Ph (W): +61-2-6125-2431 Ph (H): +61-2-6125-7407 Ph (M): +61-40-451-8301 __ [EMAIL PROTECTED] mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
Re: [R] how to extract data from excel sheet?
Hi, Take a look at read.xls() from gregmisc package. HTH, Kevin On Thu, 19 Aug 2004, Sivan Aldor wrote: i want to upload different sheets from one excel file. does anyone know of a way to do so? (i use read.csv to load the excel but i would like to load form the sheets themselves.) thanks sivan __ [EMAIL PROTECTED] mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html Ko-Kang Kevin Wang PhD Student Centre for Mathematics and its Applications Building 27, Room 1004 Mathematical Sciences Institute (MSI) Australian National University Canberra, ACT 0200 Australia Homepage: http://wwwmaths.anu.edu.au/~wangk/ Ph (W): +61-2-6125-2431 Ph (H): +61-2-6125-7407 Ph (M): +61-40-451-8301 __ [EMAIL PROTECTED] mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
Re: [R] R and Latex tables
Hi, On Wed, 25 Aug 2004, Joao Pedro W. de Azevedo wrote: Dear R users, I would like to know if there is any way that I can aumatically generate *.tex files with the output of my estimations from R. Take a look at the xtable package. HTH, Kevin Ko-Kang Kevin Wang PhD Student Centre for Mathematics and its Applications Building 27, Room 1004 Mathematical Sciences Institute (MSI) Australian National University Canberra, ACT 0200 Australia Homepage: http://wwwmaths.anu.edu.au/~wangk/ Ph (W): +61-2-6125-2431 Ph (H): +61-2-6125-7407 Ph (M): +61-40-451-8301 __ [EMAIL PROTECTED] mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
Re: [R] Help using Hmisc / Latex
Hi, On Wed, 25 Aug 2004, Joao Pedro W. de Azevedo wrote: ## Annette Dobson (1990) An Introduction to Generalized Linear Models. ## Page 9: Plant Weight Data. summary(lm.D90 - lm(weight ~ group - 1))# omitting intercept out - latex(lm.D90) latex(out, model1, file=) When I run this code, I get an output which does not attend my needs. Just out of interest, have you read the documentation for latex()? Kevin Ko-Kang Kevin Wang PhD Student Centre for Mathematics and its Applications Building 27, Room 1004 Mathematical Sciences Institute (MSI) Australian National University Canberra, ACT 0200 Australia Homepage: http://wwwmaths.anu.edu.au/~wangk/ Ph (W): +61-2-6125-2431 Ph (H): +61-2-6125-7407 Ph (M): +61-40-451-8301 __ [EMAIL PROTECTED] mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
[R] Order with scientific notations
Hi, If a value like 8e-04 is in a data frame, is the following behaviour normal? final.df Chr P.values 11 0.0379 260.068 32 0.0025 4 138e-04 5 14 0.0244 63 0.0279 74 0.1561 85 0.9261 97 0.0011 10 9 0.5125 11 10 0.2196 12 11 0.6457 13 18 0.9272 final.sorted - data.frame(final.df[order(final.df$P.values), ], +row.names = 1:13) final.sorted Chr P.values 17 0.0011 22 0.0025 3 14 0.0244 43 0.0279 51 0.0379 660.068 74 0.1561 8 10 0.2196 99 0.5125 10 11 0.6457 11 5 0.9261 12 18 0.9272 13 138e-04 I'd think 8e-04 should be the smallest value...? It's R 1.9.1 on Windows XP if that helps. Cheers, Kevin -- Ko-Kang Kevin Wang PhD Student Centre for Mathematics and its Applications Building 27, Room 1004 Mathematical Sciences Institute (MSI) Australian National University Canberra, ACT 0200 Australia Homepage: http://wwwmaths.anu.edu.au/~wangk/ Ph (W): +61-2-6125-2431 Ph (H): +61-2-6125-7407 Ph (M): +61-40-451-8301 __ [EMAIL PROTECTED] mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
Re: [R] read.spss trouble
Hi Martin, Martin Klaffenboeck wrote: Hello! I'm not sure if this is an german list, so I will post in english. It's an English list. I'm using R on my gentoo linux and now I got an spss .sav file. I found that r has a function like read.spss(file.sav) but when I try this I get the Error: couldn't find function read.spss. Can anyone tell me what's going wrong? It's in the package foreign. Try: library(foreign) HTH, Kevin -- Ko-Kang Kevin Wang PhD Student Centre for Mathematics and its Applications Building 27, Room 1004 Mathematical Sciences Institute (MSI) Australian National University Canberra, ACT 0200 Australia Homepage: http://wwwmaths.anu.edu.au/~wangk/ Ph (W): +61-2-6125-2431 Ph (H): +61-2-6125-7407 Ph (M): +61-40-451-8301 __ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
Re: [R] Reference Card?
Hi, Have you tried looking under Documentation - Contributed, under CRAN? Kev Martin Klaffenboeck wrote: Hello! For LaTeX I found a reference Card at http://www.cs.ualberta.ca/~c603/LaTeX_docs/Symbol_Source/latex_symbols.pdf Is there something available for R? thanks, Martin __ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html -- Ko-Kang Kevin Wang PhD Student Centre for Mathematics and its Applications Building 27, Room 1004 Mathematical Sciences Institute (MSI) Australian National University Canberra, ACT 0200 Australia Homepage: http://wwwmaths.anu.edu.au/~wangk/ Ph (W): +61-2-6125-2431 Ph (H): +61-2-6125-7407 Ph (M): +61-40-451-8301 __ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
Re: [R] emacs
Hi, Check out the ESS site, http://stat.ethz.ch/ESS/ Cheers, Kev Flatman wrote: hi ! is there an emacs mode for .r code ? thanks erik __ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html -- Ko-Kang Kevin Wang PhD Student Centre for Mathematics and its Applications Building 27, Room 1004 Mathematical Sciences Institute (MSI) Australian National University Canberra, ACT 0200 Australia Homepage: http://wwwmaths.anu.edu.au/~wangk/ Ph (W): +61-2-6125-2431 Ph (H): +61-2-6125-7407 Ph (M): +61-40-451-8301 __ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
Re: [R] Finding out collinearity in regression
Hi, Young Cho wrote: fit - aov( Y ~ . , data = dat) Error in contrasts-(`*tmp*`, value = contr.treatment) : contrasts can be applied only to factors with 2 or more levels I think there is a dependency in explanatory variables. So, I wanted to use alias to find out a dependency in design matrix but I can't because I cannot create fit in the first place. The error message actually looks like you have got (at least) a variable that only has 1 level, e.g. a factor with only one level. Cheers, Kev -- Ko-Kang Kevin Wang PhD Student Centre for Bioinformation Science Building 27, Room 1004 Mathematical Sciences Institute (MSI) Australian National University Canberra, ACT 2601 Australia Homepage: http://wwwmaths.anu.edu.au/~wangk/ Ph (W): +61-2-6125-2431 Ph (H): +61-2-6125-7407 Ph (M): +61-40-451-8301 __ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
Re: [R] TeX distribution on Windows
Hi, Göran Broström wrote: So, what is suggested? TUG (tug.org) recommends something called proTeXt, which is said to be based on MiKTeX, for Windows users. Since MikTeX could be used with R, that sounds like a good alternative. Any comments to that? I've been using MikTeX on Windows for years and have never had any problems. Its Update Wizard also has a nice and intuitive user interface. I've never had any problems using it with R. Cheers, Kev -- Ko-Kang Kevin Wang PhD Student Centre for Bioinformation Science Building 27, Room 1004 Mathematical Sciences Institute (MSI) Australian National University Canberra, ACT 2601 Australia Homepage: http://wwwmaths.anu.edu.au/~wangk/ Ph (W): +61-2-6125-2431 Ph (H): +61-2-6125-7488 Ph (M): +61-40-451-8301 __ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
Re: [R] TeX distribution on Windows
Thomas Petzoldt wrote: Miktex can be used with WinEDT, Emacs, Texniccenter and others as editor. Slightly off topic, if you want to get MikTeX working with Emacs and ESS, the Claus Dethlefsen has a wonderful web site (in fact, best website on this topic IMHO) http://www.math.auc.dk/~dethlef/Tips/ Cheers, Kev -- Ko-Kang Kevin Wang PhD Student Centre for Bioinformation Science Building 27, Room 1004 Mathematical Sciences Institute (MSI) Australian National University Canberra, ACT 2601 Australia Homepage: http://wwwmaths.anu.edu.au/~wangk/ Ph (W): +61-2-6125-2431 Ph (H): +61-2-6125-7488 Ph (M): +61-40-451-8301 __ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
Re: [R] graphics guide?
Hi, Karin Lagesen wrote: I am trying to create some graphs with R and it seems to be able to do what I need. However, I have so far not been able to find any sort of explanation of how the graphics system works. I am for instance trying to create a multiple figure, and I seem to have to call plot.new() before every new plot command, I have however not found any Do you mean several graphs in the same window? If so, you want something like, e.g.: par(mfrow = c(2, 2)) Take a look at ?par and the mfrow or mfcol options. Cheers and HTH, Kev -- Ko-Kang Kevin Wang PhD Student Centre for Bioinformation Science Building 27, Room 1004 Mathematical Sciences Institute (MSI) Australian National University Canberra, ACT 2601 Australia Homepage: http://wwwmaths.anu.edu.au/~wangk/ Ph (W): +61-2-6125-2431 Ph (H): +61-2-6125-7488 Ph (M): +61-40-451-8301 __ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
Re: [R] Binary Logit Regression with R
Hi, Johann Park wrote: Let say, my Y is war occurence (occur=1, otherwise 0). And my independent variables (Xs) are trade, democracy, military poweretc. Take a look at ?glm. HTH, Kev -- Ko-Kang Kevin Wang PhD Student Centre for Bioinformation Science Building 27, Room 1004 Mathematical Sciences Institute (MSI) Australian National University Canberra, ACT 2601 Australia Homepage: http://wwwmaths.anu.edu.au/~wangk/ Ph (W): +61-2-6125-2431 Ph (H): +61-2-6125-7488 Ph (M): +61-40-451-8301 __ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
Re: [R] there is no xls reader in R?
Have a look at the read.xls() in gdata package. HTH, Kevin Michael wrote: Currently I have to convert all my xls into csv before I can read it in and process the excel data in R... Is there a way to directly read in xls data? Thanks a lot! [[alternative HTML version deleted]] __ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html -- Ko-Kang Kevin Wang Homepage: http://wwwmaths.anu.edu.au/~wangk/ Ph (W): +61-2-6125-2431 Ph (H): +61-2-6125-7471 Ph (M): +61-40-451-8301 __ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
[R] ts() objects in R
Does anyone know why this is happening? diff.prop[1:5] 1 2 3 4 5 -0.6323988 -0.5226586 -0.5605096 -0.6656347 -0.6011561 ts(diff.prop, start = c(1997, 11), frequency = 1) Time Series: Start = 2007 End = 2125 Frequency = 1 [snip] diff.prop is a vector, I want to convert it to a time series starting from Nov 1997 on a monthly basis. However when it's created it starts from 2007. It's happening on both R 1.8.1 and R 1.9.0 on Windows XP Pro Cheers, Kevin [[alternative HTML version deleted]] __ [EMAIL PROTECTED] mailing list https://www.stat.math.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
Re: [R] ts() objects in R
Hi, - Original Message - From: Uwe Ligges [EMAIL PROTECTED] I think you mean ts(diff.prop, start = c(1997, 11), frequency = 12) Whoops, indeed..thanks! That was a stupid question *_* kevin Wang __ [EMAIL PROTECTED] mailing list https://www.stat.math.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
RE: [R] how to get data and post it on R
Hi, -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of matt lindon Sent: Saturday, May 15, 2004 8:21 PM To: [EMAIL PROTECTED] Subject: [R] how to get data and post it on R Hi , i'm having trouble getting data from outside and trying to do either a discrimination analysis or a regression analysis.I don't know what kind of data i need to use and also what are the packages i need to use. Please get me some direction so i can begin . Have you tried reading the documentation? E.g. R Data Import/Export and the FAQs? Kevin Ko-Kang Kevin Wang, MSc(Hon) SLC Stats Workshops Co-ordinator The University of Auckland New Zealand __ [EMAIL PROTECTED] mailing list https://www.stat.math.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
RE: [R] cameraa rotation graphics
Hi, -Original Message- From: [EMAIL PROTECTED] Dear all, Is there a camera rotation for 3d graphics in R. I have seen it in a conference one time and thought it is pretty neat. the presenter was able to rotate the 3d graph with dragging the mouse up down left right. If not in R is there something that is open source that does this. Do you mean Daniel Adler's rgl (http://wsopuppenkiste.wiso.uni-goettingen.de/~dadler/) or the Ggobi/Rggobi http://www.ggobi.org/? Kevin Ko-Kang Kevin Wang, MSc(Hon) SLC Stats Workshops Co-ordinator The University of Auckland New Zealand __ [EMAIL PROTECTED] mailing list https://www.stat.math.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
Re: [R] rpart
Hi, I think most, if not all, your questions can be answered by: 1) ?rpart 2) Some search through the r-help mailing list 3) Read the chapter on tree-based models in MASS 4 (Modern Applied Statistics with S) by Venables and Ripley Kevin - Original Message - From: [EMAIL PROTECTED] To: [EMAIL PROTECTED] Sent: Friday, June 04, 2004 9:59 PM Subject: [R] rpart Hello everyone, I'm a newbie to R and to CART so I hope my questions don't seem too stupid. 1.) My first question concerns the rpart() method. Which method does rpart use in order to get the best split - entropy impurity, Bayes error (min. error) or Gini index? Is there a way to make it use the entropy impurity? The second and third question concern the output of the printcp() function. 2.) What exactly are the cps in that sense here? I assumed them to be the treshold complexity parameters as in Breiman et al., 1998, Section 3.3? Are they the same as the treshold niveaus of alpha? I have read somewhere that the cps here are the treshold alphas divided by the root node error. Is that true? 3.) How is rel error computed? I am supposed to evaluate the goodness of classification of of the CART method. Do you think rel error is a good measure for that? I'd be very thankful if anyone could give me hand on that. This is a project for uni and I desperately need a good mark. Thank you very much in advance, Mareike __ [EMAIL PROTECTED] mailing list https://www.stat.math.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html __ [EMAIL PROTECTED] mailing list https://www.stat.math.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
[R] How to Describe R to Finance People
Hi,
I've been doing a joint research with someone from the Property
Department here and she is about to give a presentation on the
results. The audience will include people from Property and Finance,
and she is wondering how to describe R to these people (as I used R to
do the analyses), since she has never even heard of R before our joint
research (and has been using SPSS). The difficult part is she has
only about 1 ~ 2 minutes to talk about R.
The following is what I have in mind, any suggestions from people in
Finance will be greatly appreciated! (From our research together I
think it may be safe to assume the audience will know, or at least
have heard of, basic statistical terminology such as multiple linear
regression and dummy variables).
\begin{quote}
R was originally developed by Dr. Ross Ihaka and Dr. Robert Gentleman
from the Department of Statistics at the University of Auckland in
1992. It is free and in the last decade it has evolved into one of
the most powerful statistical software, with over 150 user-contributed
add-on packages. It is not only used by statisticians or scientists,
but also econometricians and people in finance due to its cost (FREE)
and its powerfulness.
Although it has a slightly higher learning curve than SPSS-like
program, it gets easier to use once one is familiar with it. One of
the main advantage it has over SPSS-like software is that you do not
need to explicitly create dummy variables. You only need to specify
your dependent variable and independent variables and R will fit it
(and create dummy variables automatically) for you.
It also has many state-of-art free resources, including manuals,
contributed tutorials and documentations, online. A free mailing list
is also available for people to ask questions and questions are
usually answered by more experienced users around the world within a
few hours (sometimes even within minutes).
\end{quote}
As mentioned above, she was rather impressed when I mention that one
does not need to create dummy variables in R. Therefore I am thinking
she might be interested in mentioning it in her talk.
I have never had experience of trying to introduce R to
non-Scientists, hence I would appreciate any comments!
Cheers,
Kevin
Ko-Kang Kevin Wang, MSc(Hon)
SLC Stats Workshops Co-ordinator
The University of Auckland
New Zealand
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Re: [R] Reading in Files (was: no subject)
Please use a more appropriate subject! - Original Message - From: [EMAIL PROTECTED] To: [EMAIL PROTECTED] Sent: Tuesday, June 08, 2004 8:25 PM Subject: [R] (no subject) Hi!! I am a new user of R (just trying to analysis microarrays with some packages from the bioconductor project). I would like to import a text-delimeted file containing 20 columns and 22200 rows. I have tried read.table; scan(file=) matrix(scan(file, n=20*200,20,200, byrow=TRUE)); Doesn't matter what I try I got the next message: error in file (file r): unable to open connection in addition warning message cannot open file MAS5orig (this is the name of the file I am trying to import in R) It's a syntax error, I think. Why do you have a before matrix() command? Also, which operating system are you running? Are you sure your working directory is correct? Cheers, Kevin __ [EMAIL PROTECTED] mailing list https://www.stat.math.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
[R] Table to Data Frame
[Forwarding on behalf of a colleague]
She's got a list with several tables:
tab - list()
for(i in 1:6) {
+ tab[[i]] - table(freq[i])
+ }
tab
[[1]]
0 0.17 0.3 0.51 2.534
1962515252
[[2]]
0 0.17 0.31 2.534
199136261
[[3]]
0 0.5
217 1
[[4]]
0 2.5
216 2
[[5]]
0 0.17 0.3 0.51 2.534
2071111241
[[6]]
0 0.173
21611
And would like to convert to a data frame, like:
0 0.17 0.3 0.5 1
1962 5 1 5
1991 3 0 6
2170 0 1 0
[snip]
Basically down the columns she'd like to have the counts. But because each
table in the list has got different number of columns, I've been unable to
convert them into a data frame for her.
Any help would be greatly appreciated!
Cheers,
Kevin
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Re: [R] How to Describe R to Finance People
Thank you very much to those who contributed to this rather interesting discussion/debate. I was very surprised (and almost overwhelmed) by the volume of replies based on this topic! I have prepared some slides and put the draft version on www.stat.auckland.ac.nz/~kwan022/tmp/RFin.ppt. Feel free to download a copy if you are interested in what I am planning to use -- of course, any more suggestions are welcome but remember, it will only be a 1 ~ 2 minute talk on R *_* Cheers, Kevin __ [EMAIL PROTECTED] mailing list https://www.stat.math.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
RE: [R] load function to R GUI
Hi, -Original Message- From: [EMAIL PROTECTED] Hi all! I looked through the manual and FAQ, and did not find any information on how to load functions from files (with .R extension) to run them in R GUI under Windows. The only way I know is to create and edit a function inside GUI. But what if I want to edit it in Emacs (do not want to use ESS) and then load into GUI? Any suggestions... Do you mean ?source? i.e. save your function in, say, foo.R then use the source() function to get it in. HTH Kevin __ [EMAIL PROTECTED] mailing list https://www.stat.math.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
[R] Date Calculation
Hi, I've been playing with: joinDate - format(strptime(as.vector(forum[,2]), %d-%b-%y), +%d-%b-%Y) today - format(strptime(as.vector(14-Jun-04), %d-%b-%Y), + %d-%b-%Y) joinDate [1] 04-Feb-2004 13-Feb-2004 26-Feb-2004 27-Feb-2004 27-Feb-2004 [6] 27-Feb-2004 29-Feb-2004 01-Mar-2004 02-Mar-2004 07-Mar-2004 [11] 08-Mar-2004 17-Mar-2004 20-Mar-2004 22-Mar-2004 22-Mar-2004 [16] 23-Mar-2004 23-Mar-2004 24-Mar-2004 01-Apr-2004 01-Apr-2004 [21] 01-Apr-2004 01-Apr-2004 02-Apr-2004 06-Apr-2004 09-Apr-2004 [26] 11-Apr-2004 14-Apr-2004 03-May-2004 04-May-2004 30-May-2004 [31] 01-Jun-2004 10-Jun-2004 14-Jun-2004 17-Jun-2004 17-Jun-2004 today [1] 14-Jun-0004 joinDate - today Error in joinDate - today : non-numeric argument to binary operator But it didn't quite work. What I'd like joinDate - today to return is the number of days to today, since joinDate. I'm sure it has been asked before however a search on r-help didn't found me any relevant information *_*. Cheers, Kevin Ko-Kang Kevin Wang, MSc(Hon) SLC Stats Workshops Co-ordinator The University of Auckland New Zealand __ [EMAIL PROTECTED] mailing list https://www.stat.math.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
RE: [R] Date Calculation
Hi, -Original Message- From: Martin Maechler [mailto:[EMAIL PROTECTED] Kevin, [[did you have tough day? usually your Q/A are much better ;-()]] Thanks to those who have replied, and yes shame on me.. [I also realised I can just use Sys.Date() to get today's date, instead of typing it in..I really had a tough day *_*] Cheers, Kevin __ [EMAIL PROTECTED] mailing list https://www.stat.math.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
RE: [R] setwd problems
Hi,
-Original Message-
From: [EMAIL PROTECTED]
Hello,
I am using R for Windows and I receive error messages when trying to
change my working directory:
setwd('C:\BACC_R')
Error in setwd(dir) : cannot change working directory
Have you tried:
setwd(C:/BACC_R)
Or
setwd(C:\\BACC_R)
HTH
Kevin
Ko-Kang Kevin Wang, MSc(Hon)
SLC Stats Workshops Co-ordinator
The University of Auckland
New Zealand
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Re: [R] legend
Hi, - Original Message - From: Perez Martin, Agustin [EMAIL PROTECTED] To: lista R help (E-mail) [EMAIL PROTECTED] Sent: Wednesday, June 23, 2004 9:19 PM Subject: [R] legend DeaR UseRs: I want to put a legend in my plot. In the first line of the legend I want to put a box filled but in the second one I would like to put a lty=2 Have you looked at ?lengend It's got some good examples. Kevin __ [EMAIL PROTECTED] mailing list https://www.stat.math.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
Re: [R] help in importing data
Hi, Try read.csv() i.e. take a look at ?read.csv HTH Kevin - Original Message - From: Jose Sanchez [EMAIL PROTECTED] To: [EMAIL PROTECTED] [EMAIL PROTECTED] Sent: Friday, June 25, 2004 10:38 AM Subject: [R] help in importing data hi, i was wondering if you can give me an example on how to import a data set in csv format. i tried the manual's example, but have been getting an error message:Error: syntax error. sincerely, jose sanchez __ [EMAIL PROTECTED] mailing list https://www.stat.math.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html __ [EMAIL PROTECTED] mailing list https://www.stat.math.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
Re: [R] how to make a plot without any axis-labeling
?plot On Fri, 1 Aug 2003, Michael Kirschbaum wrote: Date: Fri, 1 Aug 2003 00:22:09 +0200 From: Michael Kirschbaum [EMAIL PROTECTED] To: R-Help [EMAIL PROTECTED] Subject: [R] how to make a plot without any axis-labeling Hi. I got a problem, perhaps someone can help me... every time, when I want to plot data, both axis are labeled by default like data[1,] and data[2,] how can I make a plot without ANY labeling? does anyone know that? thanks for helping Michael [[alternative HTML version deleted]] __ [EMAIL PROTECTED] mailing list https://www.stat.math.ethz.ch/mailman/listinfo/r-help -- Cheers, Kevin -- On two occasions, I have been asked [by members of Parliament], 'Pray, Mr. Babbage, if you put into the machine wrong figures, will the right answers come out?' I am not able to rightly apprehend the kind of confusion of ideas that could provoke such a question. -- Charles Babbage (1791-1871) From Computer Stupidities: http://rinkworks.com/stupid/ -- Ko-Kang Kevin Wang Master of Science (MSc) Student SLC Tutor and Lab Demonstrator Department of Statistics University of Auckland New Zealand Homepage: http://www.stat.auckland.ac.nz/~kwan022 Ph: 373-7599 x88475 (City) x88480 (Tamaki) __ [EMAIL PROTECTED] mailing list https://www.stat.math.ethz.ch/mailman/listinfo/r-help
Re: [R] Memory-problem?
On Mon, 11 Aug 2003, Unternährer Thomas, uth wrote:
test.window - function(stat, some arguments){
several ifs and ifs in ifs (if(){...if(){...}})
}
...
for (ii in 1 : length(data)){ ## data is a vector of length 2500
stat - test.window( some arguments )
## there are 15 arguments including a big list (stat), vectors and scalars
plot.points(stat, some other arguments)
}
If I use the functions test.window and plot.points with the arguments
(test.window(stat,...))
the for-loop stops at point ii = 1200 with an error message (error: Object stat not
found).
In every loop the object stat is used. This error could not be the real problem I
think.
I don't think it is a memory problem. From your error message, the object
stat cannot be found. Have you initialised stat before the loop?
--
Cheers,
Kevin
--
On two occasions, I have been asked [by members of Parliament],
'Pray, Mr. Babbage, if you put into the machine wrong figures, will
the right answers come out?' I am not able to rightly apprehend the
kind of confusion of ideas that could provoke such a question.
-- Charles Babbage (1791-1871)
From Computer Stupidities: http://rinkworks.com/stupid/
--
Ko-Kang Kevin Wang
Master of Science (MSc) Student
SLC Tutor and Lab Demonstrator
Department of Statistics
University of Auckland
New Zealand
Homepage: http://www.stat.auckland.ac.nz/~kwan022
Ph: 373-7599
x88475 (City)
x88480 (Tamaki)
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Re: [R] problems with lda , data included, can somebody test withthe new version
On Wed, 6 Aug 2003, Nicolaas Busscher wrote: enclosed a simple R script (and a data file, and the output) , with calls lda similar to the example with the iris data in the documentation. it is not working and i dont understand the error message. can anybody help me? i am using R 1.5.1 (2002.06.17) on debian woody stable. I would like to avoid updating now, because i want to keep the system in stable. can somebody test, if the newer version didnt have this problem ? thanks z-lda(assignment ~ .,actaData,prior=prio,tol=1.0e-08) Using the latest version, R 1.7.1, I get: z Call: lda.formula(assignment ~ ., data = actaData, prior = prio, tol = 1e-08) Prior probabilities of groups: 5 6 0.5 0.5 Group means: diagonal.moment cluster.shade histogram.kurtosis 584.94982 -11989.17 -0.1116342 6 138.31495 -18892.15 -0.1205776 Coefficients of linear discriminants: LD1 diagonal.moment-1.575854e-03 cluster.shade -1.209398e-04 histogram.kurtosis -2.028278e+02 -- Cheers, Kevin -- On two occasions, I have been asked [by members of Parliament], 'Pray, Mr. Babbage, if you put into the machine wrong figures, will the right answers come out?' I am not able to rightly apprehend the kind of confusion of ideas that could provoke such a question. -- Charles Babbage (1791-1871) From Computer Stupidities: http://rinkworks.com/stupid/ -- Ko-Kang Kevin Wang Master of Science (MSc) Student SLC Tutor and Lab Demonstrator Department of Statistics University of Auckland New Zealand Homepage: http://www.stat.auckland.ac.nz/~kwan022 Ph: 373-7599 x88475 (City) x88480 (Tamaki) __ [EMAIL PROTECTED] mailing list https://www.stat.math.ethz.ch/mailman/listinfo/r-help
Re: [R] Princomp function in R
It is in package mva. On Tue, 12 Aug 2003, dai wrote: Date: Tue, 12 Aug 2003 13:51:10 -0700 From: dai [EMAIL PROTECTED] To: [EMAIL PROTECTED] Cc: [EMAIL PROTECTED] Subject: [R] Princomp function in R Hi, I want to use Princomp function in R, but com up an error as Error: couldn't find function princomp , can you help me resolve this problem? Thanks, Jixin Dai, Ph.D __ [EMAIL PROTECTED] mailing list https://www.stat.math.ethz.ch/mailman/listinfo/r-help -- Cheers, Kevin -- On two occasions, I have been asked [by members of Parliament], 'Pray, Mr. Babbage, if you put into the machine wrong figures, will the right answers come out?' I am not able to rightly apprehend the kind of confusion of ideas that could provoke such a question. -- Charles Babbage (1791-1871) From Computer Stupidities: http://rinkworks.com/stupid/ -- Ko-Kang Kevin Wang Master of Science (MSc) Student SLC Tutor and Lab Demonstrator Department of Statistics University of Auckland New Zealand Homepage: http://www.stat.auckland.ac.nz/~kwan022 Ph: 373-7599 x88475 (City) x88480 (Tamaki) __ [EMAIL PROTECTED] mailing list https://www.stat.math.ethz.ch/mailman/listinfo/r-help
Re: [R] default directory RGui for windows NT
On Mon, 11 Aug 2003, Roy Werkman wrote: Can anyone tell me how to change the default directory in RGui for windows NT? I take it you mean the working directory? At least two ways: 1) Right click on the Rgui shortcut, click on Properties. Enter the path into the Starting Location (or something like that, I'm using Chinese Windows and I'm translating the words). 2) In Rgui, File - Change dir... -- Cheers, Kevin -- On two occasions, I have been asked [by members of Parliament], 'Pray, Mr. Babbage, if you put into the machine wrong figures, will the right answers come out?' I am not able to rightly apprehend the kind of confusion of ideas that could provoke such a question. -- Charles Babbage (1791-1871) From Computer Stupidities: http://rinkworks.com/stupid/ -- Ko-Kang Kevin Wang Master of Science (MSc) Student SLC Tutor and Lab Demonstrator Department of Statistics University of Auckland New Zealand Homepage: http://www.stat.auckland.ac.nz/~kwan022 Ph: 373-7599 x88475 (City) x88480 (Tamaki) __ [EMAIL PROTECTED] mailing list https://www.stat.math.ethz.ch/mailman/listinfo/r-help
Re: [R] Books for R
On Wed, 13 Aug 2003, anne wrote: As a newbie to R, I need to learn my way around (no previous experience of S).What books, doc for R are recommended? I'm interested primarly in non linear regression and process modelling (and have downloaded the R documentation from the site). So you have checked the publications on R web site? http://www.r-project.org/doc/bib/R-publications.html There is a list there. William N. Venables and Brian D. Ripley. Modern Applied Statistics with S. Fourth Edition. Springer, 2002. ISBN 0-387-95457-0. in particular, is a very good book for beginners. It has a chapter on non-linear regression and smooth regression, using packages like nls. -- Cheers, Kevin -- On two occasions, I have been asked [by members of Parliament], 'Pray, Mr. Babbage, if you put into the machine wrong figures, will the right answers come out?' I am not able to rightly apprehend the kind of confusion of ideas that could provoke such a question. -- Charles Babbage (1791-1871) From Computer Stupidities: http://rinkworks.com/stupid/ -- Ko-Kang Kevin Wang Master of Science (MSc) Student SLC Tutor and Lab Demonstrator Department of Statistics University of Auckland New Zealand Homepage: http://www.stat.auckland.ac.nz/~kwan022 Ph: 373-7599 x88475 (City) x88480 (Tamaki) __ [EMAIL PROTECTED] mailing list https://www.stat.math.ethz.ch/mailman/listinfo/r-help
Re: [R] Crosstabs
On Tue, 12 Aug 2003, Gerhard Prade wrote: i think i am to silly. I have installed R 1.7.1 (2003-06-16). Installed some packages like xtables ore xml. I tried out this to installing packages. Then i tried to make a crosstable like i know it from spss. They say in this list that it would be going. than i want make a crosstables with the first and the second variable. I'm not sure what SPSS does as I have never used it. But is the CrossTable() function in the gregmisc library what you want? -- Cheers, Kevin -- On two occasions, I have been asked [by members of Parliament], 'Pray, Mr. Babbage, if you put into the machine wrong figures, will the right answers come out?' I am not able to rightly apprehend the kind of confusion of ideas that could provoke such a question. -- Charles Babbage (1791-1871) From Computer Stupidities: http://rinkworks.com/stupid/ -- Ko-Kang Kevin Wang Master of Science (MSc) Student SLC Tutor and Lab Demonstrator Department of Statistics University of Auckland New Zealand Homepage: http://www.stat.auckland.ac.nz/~kwan022 Ph: 373-7599 x88475 (City) x88480 (Tamaki) __ [EMAIL PROTECTED] mailing list https://www.stat.math.ethz.ch/mailman/listinfo/r-help
Re: [R] How to reinstall rpart?
On Fri, 15 Aug 2003, David Parkhurst wrote: After entering library(rpart), I tried to plot an existing rpart tree, and got this error message: Error: couldn't find function plot.rpart. However, ?plot.rpart does bring up the help for the function. The same things occur for text.rpart, although print(my.tree) does work. So have you *read* the help when you do ?plot.rpart ? Please read the example, and see how it is used. Hint: you do not use plot.rpart(), but plot() -- Cheers, Kevin -- On two occasions, I have been asked [by members of Parliament], 'Pray, Mr. Babbage, if you put into the machine wrong figures, will the right answers come out?' I am not able to rightly apprehend the kind of confusion of ideas that could provoke such a question. -- Charles Babbage (1791-1871) From Computer Stupidities: http://rinkworks.com/stupid/ -- Ko-Kang Kevin Wang Master of Science (MSc) Student SLC Tutor and Lab Demonstrator Department of Statistics University of Auckland New Zealand Homepage: http://www.stat.auckland.ac.nz/~kwan022 Ph: 373-7599 x88475 (City) x88480 (Tamaki) __ [EMAIL PROTECTED] mailing list https://www.stat.math.ethz.ch/mailman/listinfo/r-help
Re: [R] Neural Networks in R
Hi, Venables and Ripley's Modern Applied Statistics with S, 4th Ed, Springer. It is the best book and has a large section devoted to using the nnet library. Of course, you need to understand the theory first;-D On Wed, 20 Aug 2003, Miriam Dreißig wrote: Date: Wed, 20 Aug 2003 12:54:18 +0200 (MEST) From: Miriam Dreißig [EMAIL PROTECTED] To: [EMAIL PROTECTED] Subject: [R] Neural Networks in R Hello! We are a group of three students at Bielefeld University currently working on a statistical projects about neural networks. Within the framework of this project we are supposed to use the nnet-function in R and explain how it works. Since anyone of us has much experience in using R we hoped to find some information on your homepage. Unfortunatelly, we haven't been very successfull so far. We were wondering if you happen to know any books or articles which deal with neural networks in R or if you could tell us were we can find such information. We would highly appreciate if you could help us on that matter. Thank you very much in advance. Best regards, Anne Bruns, Miriam Dreißig, Sascha Hartung -- Cheers, Kevin -- On two occasions, I have been asked [by members of Parliament], 'Pray, Mr. Babbage, if you put into the machine wrong figures, will the right answers come out?' I am not able to rightly apprehend the kind of confusion of ideas that could provoke such a question. -- Charles Babbage (1791-1871) From Computer Stupidities: http://rinkworks.com/stupid/ -- Ko-Kang Kevin Wang Master of Science (MSc) Student SLC Tutor and Lab Demonstrator Department of Statistics University of Auckland New Zealand Homepage: http://www.stat.auckland.ac.nz/~kwan022 Ph: 373-7599 x88475 (City) x88480 (Tamaki) __ [EMAIL PROTECTED] mailing list https://www.stat.math.ethz.ch/mailman/listinfo/r-help
Re: [R] R tools for large files
Hi, Have you looked at R Data Import/Export? On Mon, 25 Aug 2003, Murray Jorgensen wrote: Date: Mon, 25 Aug 2003 16:04:17 +1200 From: Murray Jorgensen [EMAIL PROTECTED] Reply-To: [EMAIL PROTECTED] To: R-help [EMAIL PROTECTED] Subject: [R] R tools for large files I'm wondering if anyone has written some functions or code for handling very large files in R. I am working with a data file that is 41 variables times who knows how many observations making up 27MB altogether. The sort of thing that I am thinking of having R do is - count the number of lines in a file - form a data frame by selecting all cases whose line numbers are in a supplied vector (which could be used to extract random subfiles of particular sizes) Does anyone know of a package that might be useful for this? Murray -- Cheers, Kevin -- On two occasions, I have been asked [by members of Parliament], 'Pray, Mr. Babbage, if you put into the machine wrong figures, will the right answers come out?' I am not able to rightly apprehend the kind of confusion of ideas that could provoke such a question. -- Charles Babbage (1791-1871) From Computer Stupidities: http://rinkworks.com/stupid/ -- Ko-Kang Kevin Wang Master of Science (MSc) Student SLC Tutor and Lab Demonstrator Department of Statistics University of Auckland New Zealand Homepage: http://www.stat.auckland.ac.nz/~kwan022 Ph: 373-7599 x88475 (City) x88480 (Tamaki) __ [EMAIL PROTECTED] mailing list https://www.stat.math.ethz.ch/mailman/listinfo/r-help
Re: [R] selecting by variable
On Wed, 27 Aug 2003, Eugene Salinas wrote: I'm a recent R convert so I haven't quite figured out the details yet... Usually it is good to read the manuals when you use a unfamiliar software... How do I select one variable by another one? Ie if I want to draw the histogram of variable X only for those individuals that also have a value Y in a certain range? e.g. x = rnorm(100) y = 1:100 x[y = 20:50] will give you the value of x when y is between 20 and 50. To do a histogram, type: ?hist -- Cheers, Kevin -- On two occasions, I have been asked [by members of Parliament], 'Pray, Mr. Babbage, if you put into the machine wrong figures, will the right answers come out?' I am not able to rightly apprehend the kind of confusion of ideas that could provoke such a question. -- Charles Babbage (1791-1871) From Computer Stupidities: http://rinkworks.com/stupid/ -- Ko-Kang Kevin Wang Master of Science (MSc) Student SLC Tutor and Lab Demonstrator Department of Statistics University of Auckland New Zealand Homepage: http://www.stat.auckland.ac.nz/~kwan022 Ph: 373-7599 x88475 (City) x88480 (Tamaki) __ [EMAIL PROTECTED] mailing list https://www.stat.math.ethz.ch/mailman/listinfo/r-help
Re: [R] Re: diamond graphs and patents
I have been reading this discussion (or debate, depends on your point of view) with great interest in the last few days. On Thu, 28 Aug 2003, David Scott wrote: My reaction when learning of a proposed patent on a new graph was: oh well, that's something I can forget about. Without a patent, code would have been available in R in a very short period of time, the statistical community would have been able to play around with it, see how it worked on various problems. If the graph proved useful it would make its way into statistical practice. With a patent none of that seems possible. Prof Munoz has had fun exploring his creation, but if any of us are to do likewise I guess we will either pay up or secretly write code and play around with diamond graphs while hidden in the basement. I agree. The question, IMHO, is not whether the diamond graph is a good visualising tool or not -- because it still remains to be seen, but on the idea of having it patented. I completely agree with Dr. Ihaka that the only reason that makes R so popular and widely used across the academia, research institutes and even many large commercial companies, is that it is free and open-sourced. It is certainly going to be interesting to write up some functions in R that draws diamond graphs, and then test them on some simulated and real world data. But as Associate Professor Scott pointed out, with a patent on diamond graph (should the application be accepted), I am not sure if this is possible. With patenting in mind, I have been think what would the world like if histograms, bargraphs, boxplots...etc. were patented by the original inventors! The idea of patenting a graph seems to me like patenting a mathematical/statistical theorem. Again, if for example the Central Limit theorem is patented, does it mean we have to pay whenever we want to make inference from it? There are many software that offers educational institution an academic license, and offers students a student license. But the thought of the possibility of having to pay for using a graph (or writing codes to draw the graph) is. Getting a graph used is not that simple I think. Boxplots are now an extremely useful tool, but lets not forget that Tukey also invented the hanging rootogram. What is a hanging rootogram? ;-D As for Microsoft getting involved, God help us. Excel still doesn't do boxplots does it? Not to mention the quality of their implementation of most of their statistical routines. Even those graphs that Excel does do, e.g. histograms, it does not do a very good job in them. It has been, what, over a decade now since the first version of Excel was released? I cannot keep myself from wondering why Excel still produces ugly graphs. -- Cheers, Kevin -- On two occasions, I have been asked [by members of Parliament], 'Pray, Mr. Babbage, if you put into the machine wrong figures, will the right answers come out?' I am not able to rightly apprehend the kind of confusion of ideas that could provoke such a question. -- Charles Babbage (1791-1871) From Computer Stupidities: http://rinkworks.com/stupid/ -- Ko-Kang Kevin Wang Master of Science (MSc) Student SLC Tutor and Lab Demonstrator Department of Statistics University of Auckland New Zealand Homepage: http://www.stat.auckland.ac.nz/~kwan022 Ph: 373-7599 x88475 (City) x88480 (Tamaki) __ [EMAIL PROTECTED] mailing list https://www.stat.math.ethz.ch/mailman/listinfo/r-help
Re: [R] subtract 2 columns in a data.frame
On 4 Sep 2003, Ulrich Leopold wrote: could someone point me to the right command to subtract 2 columns in a data.frame. Might be a bit embarrassing question. But I cannot figure out how to do this simple command in R. Suppose your data frame is called foo, and you want the first column minus the second: foo[,1] - foo[,2] -- Cheers, Kevin -- On two occasions, I have been asked [by members of Parliament], 'Pray, Mr. Babbage, if you put into the machine wrong figures, will the right answers come out?' I am not able to rightly apprehend the kind of confusion of ideas that could provoke such a question. -- Charles Babbage (1791-1871) From Computer Stupidities: http://rinkworks.com/stupid/ -- Ko-Kang Kevin Wang Master of Science (MSc) Student SLC Tutor and Lab Demonstrator Department of Statistics University of Auckland New Zealand Homepage: http://www.stat.auckland.ac.nz/~kwan022 Ph: 373-7599 x88475 (City) x88480 (Tamaki) __ [EMAIL PROTECTED] mailing list https://www.stat.math.ethz.ch/mailman/listinfo/r-help
Re: [R] documents for writing functions
On Thu, 4 Sep 2003, Spencer Graves wrote: Have you considered the two books by Venables and Ripley (2002) Modern Applied Statistics in S and (2000) S Programming (both Springer)? If yes, I don't know what you mean by the usually available manuals. In addition, John Chambers's Programming with Data (aka The Green Book) is a good source. hope this helps. Rado Bonk wrote: Hi, Does anybody know suitable documents (manuals) on writing user functions (covering loops, conditions ...) in R? Other than the usually available manuals. It all depends on how much programming experience you already have. I'm giving a small workshop next week on these areas and my notes are available at http://www.stat.auckland.ac.nz/~kwan022/rinfo.php I'm planning on extend the notes into a book I'm writing -- which will be submitted to CRAN when it is completed. -- Cheers, Kevin -- On two occasions, I have been asked [by members of Parliament], 'Pray, Mr. Babbage, if you put into the machine wrong figures, will the right answers come out?' I am not able to rightly apprehend the kind of confusion of ideas that could provoke such a question. -- Charles Babbage (1791-1871) From Computer Stupidities: http://rinkworks.com/stupid/ -- Ko-Kang Kevin Wang Master of Science (MSc) Student SLC Tutor and Lab Demonstrator Department of Statistics University of Auckland New Zealand Homepage: http://www.stat.auckland.ac.nz/~kwan022 Ph: 373-7599 x88475 (City) x88480 (Tamaki) __ [EMAIL PROTECTED] mailing list https://www.stat.math.ethz.ch/mailman/listinfo/r-help
Re: [R] Sorting
Hi, On Thu, 11 Sep 2003 [EMAIL PROTECTED] wrote: What is the best way to sort a dataframe? For example, how would I go about sorting a dataframe (with variables V1-V5) by ascending V1, V2 and descending V3 while retaining V4 and V5. ?sort Also, is there a relatively easy way by which to re-order my columns? ?order or ?sort -- Cheers, Kevin -- On two occasions, I have been asked [by members of Parliament], 'Pray, Mr. Babbage, if you put into the machine wrong figures, will the right answers come out?' I am not able to rightly apprehend the kind of confusion of ideas that could provoke such a question. -- Charles Babbage (1791-1871) From Computer Stupidities: http://rinkworks.com/stupid/ -- Ko-Kang Kevin Wang Master of Science (MSc) Student SLC Tutor and Lab Demonstrator Department of Statistics University of Auckland New Zealand Homepage: http://www.stat.auckland.ac.nz/~kwan022 Ph: 373-7599 x88475 (City) x88480 (Tamaki) __ [EMAIL PROTECTED] mailing list https://www.stat.math.ethz.ch/mailman/listinfo/r-help
RE: [R] CART analysis
Or, I think, the rpart package. On Thu, 18 Sep 2003, Vladimir N. Kutinsky wrote: Date: Thu, 18 Sep 2003 00:18:25 +0400 From: Vladimir N. Kutinsky [EMAIL PROTECTED] To: [EMAIL PROTECTED] Subject: RE: [R] CART analysis Ron, Does anyone know of an R code for classification and regression tree analysis (CART)? If I got you right, you need a tree package. It implemets the CART method. If you go further, you will like randomForest package. Regards, Vladimir __ [EMAIL PROTECTED] mailing list https://www.stat.math.ethz.ch/mailman/listinfo/r-help -- Cheers, Kevin -- On two occasions, I have been asked [by members of Parliament], 'Pray, Mr. Babbage, if you put into the machine wrong figures, will the right answers come out?' I am not able to rightly apprehend the kind of confusion of ideas that could provoke such a question. -- Charles Babbage (1791-1871) From Computer Stupidities: http://rinkworks.com/stupid/ -- Ko-Kang Kevin Wang Master of Science (MSc) Student SLC Tutor and Lab Demonstrator Department of Statistics University of Auckland New Zealand Homepage: http://www.stat.auckland.ac.nz/~kwan022 Ph: 373-7599 x88475 (City) x88480 (Tamaki) __ [EMAIL PROTECTED] mailing list https://www.stat.math.ethz.ch/mailman/listinfo/r-help
Re: [R] xgobi vs ggobi
Hi, On Mon, 22 Sep 2003, Christian Hennig wrote: Hi Ted, here is something rather imprecise. I have both xgobi and ggobi on my computer. Up to now, I used almost always xgobi, because it contains the features that I need. Some of these are not in ggobi (e.g. mean/sd and med/mad standardization). ggobi has also some instabilties (no details now, because it's some time ago that I encountered them). In general, ggobi looks more user friedly, is supposed to communicate better with R and does also some standardization and other things which are not in xgobi. I think GGobi is also *supposed to be* more Windows-friendly, as it does not need an X Server running -- whereas you need to have an X Server running on Windows in order to use XGobi. The installation process of GGobi is also easier. If my memory serves me right, I think the XGobi development has sort of stopped and the developers are now concentrating on GGobi? I could be wrong though... The other thing, I think, is that GGobi supports XML data format and XGobi doesn't (or not very well?). -- Cheers, Kevin -- On two occasions, I have been asked [by members of Parliament], 'Pray, Mr. Babbage, if you put into the machine wrong figures, will the right answers come out?' I am not able to rightly apprehend the kind of confusion of ideas that could provoke such a question. -- Charles Babbage (1791-1871) From Computer Stupidities: http://rinkworks.com/stupid/ -- Ko-Kang Kevin Wang Master of Science (MSc) Student SLC Tutor and Lab Demonstrator Department of Statistics University of Auckland New Zealand Homepage: http://www.stat.auckland.ac.nz/~kwan022 Ph: 373-7599 x88475 (City) x88480 (Tamaki) __ [EMAIL PROTECTED] mailing list https://www.stat.math.ethz.ch/mailman/listinfo/r-help
Re: [R] truncating axis
On 1 Oct 2003, Diego Riano wrote: Does anyone know how to truncate and axis in R? What do you mean by truncate? Do you mean to change the range of the axes? If so then something like plot(x, xlim = range(), ylim = range()) should do (just put the desired range -- Cheers, Kevin -- On two occasions, I have been asked [by members of Parliament], 'Pray, Mr. Babbage, if you put into the machine wrong figures, will the right answers come out?' I am not able to rightly apprehend the kind of confusion of ideas that could provoke such a question. -- Charles Babbage (1791-1871) From Computer Stupidities: http://rinkworks.com/stupid/ -- Ko-Kang Kevin Wang Master of Science (MSc) Student SLC Tutor and Lab Demonstrator Department of Statistics University of Auckland New Zealand Homepage: http://www.stat.auckland.ac.nz/~kwan022 Ph: 373-7599 x88475 (City) x88480 (Tamaki) __ [EMAIL PROTECTED] mailing list https://www.stat.math.ethz.ch/mailman/listinfo/r-help
Re: [R] r editors
On Thu, 2 Oct 2003, forkusam wrote: I am programming on a windows system and have problems using notepad which is my main editor.Each time I try to open the editor from the R IDE, R crashes. Not sure what you meant by R IDE, do you mean Rgui? CAn someone tell me if I am doing anything wrong or is there a better editor(freeware) which I could get. If you are really programming in R, you really should get Emacs/ESS -- Cheers, Kevin -- On two occasions, I have been asked [by members of Parliament], 'Pray, Mr. Babbage, if you put into the machine wrong figures, will the right answers come out?' I am not able to rightly apprehend the kind of confusion of ideas that could provoke such a question. -- Charles Babbage (1791-1871) From Computer Stupidities: http://rinkworks.com/stupid/ -- Ko-Kang Kevin Wang Master of Science (MSc) Student SLC Tutor and Lab Demonstrator Department of Statistics University of Auckland New Zealand Homepage: http://www.stat.auckland.ac.nz/~kwan022 Ph: 373-7599 x88475 (City) x88480 (Tamaki) __ [EMAIL PROTECTED] mailing list https://www.stat.math.ethz.ch/mailman/listinfo/r-help
Re: [R] (no subject)
On 30 Sep 2003, Arunkumar Arumugam wrote: I tried testing some of the programs and functions. I read in the manual that plot(x,y) functions automatically generates a graphical window and plot. that does not happens in my installation. Ummm...can you be a bit more precise? What exactly has happened when you typed plot(x, y)? Have you created two vectors called x and y? Were they any error messages, if so what are the messages? -- Cheers, Kevin -- On two occasions, I have been asked [by members of Parliament], 'Pray, Mr. Babbage, if you put into the machine wrong figures, will the right answers come out?' I am not able to rightly apprehend the kind of confusion of ideas that could provoke such a question. -- Charles Babbage (1791-1871) From Computer Stupidities: http://rinkworks.com/stupid/ -- Ko-Kang Kevin Wang Master of Science (MSc) Student SLC Tutor and Lab Demonstrator Department of Statistics University of Auckland New Zealand Homepage: http://www.stat.auckland.ac.nz/~kwan022 Ph: 373-7599 x88475 (City) x88480 (Tamaki) __ [EMAIL PROTECTED] mailing list https://www.stat.math.ethz.ch/mailman/listinfo/r-help
Re: [R] Managing memory on R
On Thu, 16 Oct 2003, ZABALZA-MEZGHANI Isabelle wrote: I have a problem with the memory size within R. I would like to know if there is any may for getting back free memory during a R session. I've tried with rm and gc but it still craches. I am working on windows R1.3.1. Perhaps trying to upgrade your R version first? R 1.3.1 is kind of old now.. -- Cheers, Kevin --- Ko-Kang Kevin Wang Master of Science (MSc) Student SLC Tutor and Lab Demonstrator Department of Statistics University of Auckland New Zealand Homepage: http://www.stat.auckland.ac.nz/~kwan022 Ph: 373-7599 x88475 (City) x88480 (Tamaki) __ [EMAIL PROTECTED] mailing list https://www.stat.math.ethz.ch/mailman/listinfo/r-help
Re: [R] interactive prompts
On Tue, 21 Oct 2003, Ernie Adorio wrote: Am using R on a Linux box and am currently writing an interactive R script. 1. How do I ask a user to press any key to continue ? I used a system call to read but this only works if the Enter key is pressed: print(Press any key to continue) system(read) par(ask = TRUE) will do what you want. -- Cheers, Kevin --- Ko-Kang Kevin Wang Master of Science (MSc) Student SLC Tutor and Lab Demonstrator Department of Statistics University of Auckland New Zealand Homepage: http://www.stat.auckland.ac.nz/~kwan022 Ph: 373-7599 x88475 (City) x88480 (Tamaki) __ [EMAIL PROTECTED] mailing list https://www.stat.math.ethz.ch/mailman/listinfo/r-help
Re: [R] interactive prompts
On Tue, 21 Oct 2003, Ko-Kang Kevin Wang wrote: On Tue, 21 Oct 2003, Ernie Adorio wrote: Am using R on a Linux box and am currently writing an interactive R script. 1. How do I ask a user to press any key to continue ? I used a system call to read but this only works if the Enter key is pressed: print(Press any key to continue) system(read) par(ask = TRUE) will do what you want. Sorry, that will only work if you are plotting graphs. I didn't quite read your question properly *_*. -- Cheers, Kevin --- Ko-Kang Kevin Wang Master of Science (MSc) Student SLC Tutor and Lab Demonstrator Department of Statistics University of Auckland New Zealand Homepage: http://www.stat.auckland.ac.nz/~kwan022 Ph: 373-7599 x88475 (City) x88480 (Tamaki) __ [EMAIL PROTECTED] mailing list https://www.stat.math.ethz.ch/mailman/listinfo/r-help
Re: [R] questions about axis
Hi, On Wed, 22 Oct 2003, yyh wrote: I have difficulties to handle axis. I want to draw axis label such that axis has range of [-0.4,0.4] with intervel 0.2 for x and y axis. Some part of range do not have data points. Thus, plot does not show whole range. How can I enforce plot to depict the whole range regardless of existence of data points ? You can draw the plot from first principle. For example: x = seq(-0.4, 0.4, length = 50) y = runif(50, -0.2, 0.2) plot.new() plot.window(xlim = c(-0.4, 0.4), ylim = c(-0.4, 0.4)) axis(1, at = seq(-0.4, 0.4, by = 0.2)) axis(2, at = seq(-0.4, 0.4, by = 0.2)) points(x, y) box() Another problem is that when I depict axis labels, some labels are overlapped because interval is very small. In this case, I'd like to put one of label into insde the box which is drawn by plot. How can I do this ? Try: title(xlab = This is my x-label, line = -2) Of course, this is just a silly example, with 50 uniform random numbers between -0.2 and 0.2. But you get the idea... -- Cheers, Kevin --- Ko-Kang Kevin Wang Master of Science (MSc) Student SLC Tutor and Lab Demonstrator Department of Statistics University of Auckland New Zealand Homepage: http://www.stat.auckland.ac.nz/~kwan022 Ph: 373-7599 x88475 (City) x88480 (Tamaki) __ [EMAIL PROTECTED] mailing list https://www.stat.math.ethz.ch/mailman/listinfo/r-help
Re: [R] comments and Sweave
Hi, I asked exactly the same question to the author of Sweave privately last week. Friedrich's reply was that it is not possible at the moment, as R parser discard the comments. But he's working on it ;-D On Wed, 22 Oct 2003, Giovanni Petris wrote: Date: Wed, 22 Oct 2003 10:59:38 -0500 (CDT) From: Giovanni Petris [EMAIL PROTECTED] To: [EMAIL PROTECTED] Subject: [R] comments and Sweave I am using Sweave to produce handouts for teaching. Is there a way of making Sweave keep the comments following the `#' in the code chuncks? Thanks, Giovanni -- Cheers, Kevin --- Ko-Kang Kevin Wang Master of Science (MSc) Student SLC Tutor and Lab Demonstrator Department of Statistics University of Auckland New Zealand Homepage: http://www.stat.auckland.ac.nz/~kwan022 Ph: 373-7599 x88475 (City) x88480 (Tamaki) __ [EMAIL PROTECTED] mailing list https://www.stat.math.ethz.ch/mailman/listinfo/r-help
Re: [R] Complete Newbie Q
On Sun, 26 Oct 2003, Tom Hopper wrote: My question is this: is there a quick-start guide or introductory tutorial for someone with my background? While there seems to be quite a lot of documentation on R, it all seems directed at people with a different background. It's too basic, or too advanced, but doesn't address someone reasonably familiar with statistics who just needs to change his work habits. Not knowing your exact background, it is difficult to suggest one. I'd say that An Introduction to R manual from CRAN is a good start. Alternatively, Venables and Ripley's Modern Applied Statistics with S is an excellent source -- perhaps the best in the field. Peter Dalgaard's Introductory Statistics with R may also be a good choice. At the moment, Steven Miller and I are planning on co-authoring a book on using R, targetted at experience statisticians who have little or no experience with R. The current ideas are at http://www.stat.auckland.ac.nz/~kwan022/pub/R/RBook/ . We are planning on finishing it by Feb/March 2004 -- which may be too late for you. Once it is finished we will submit it to CRAN. -- Cheers, Kevin --- Ko-Kang Kevin Wang Master of Science (MSc) Student SLC Tutor and Lab Demonstrator Department of Statistics University of Auckland New Zealand Homepage: http://www.stat.auckland.ac.nz/~kwan022 Ph: 373-7599 x88475 (City) x88480 (Tamaki) __ [EMAIL PROTECTED] mailing list https://www.stat.math.ethz.ch/mailman/listinfo/r-help
Re: [R] interfacing C into R and R packages
I think Writing R Extensions may help you with that... On Tue, 4 Nov 2003, Peyrard Nathalie wrote: Date: Tue, 04 Nov 2003 10:19:00 +0100 From: Peyrard Nathalie [EMAIL PROTECTED] To: [EMAIL PROTECTED] Subject: [R] interfacing C into R and R packages Hi, I would like to interface a C code into R. Is it possible to use in the C code, functions from a R package (for instance, to use pmvnorm within loops in the C code and to call the result in a R function)? Nathalie __ [EMAIL PROTECTED] mailing list https://www.stat.math.ethz.ch/mailman/listinfo/r-help -- Cheers, Kevin --- Ko-Kang Kevin Wang Master of Science (MSc) Student SLC Tutor and Lab Demonstrator Department of Statistics University of Auckland New Zealand Homepage: http://www.stat.auckland.ac.nz/~kwan022 Ph: 373-7599 x88475 (City) x88480 (Tamaki) __ [EMAIL PROTECTED] mailing list https://www.stat.math.ethz.ch/mailman/listinfo/r-help
Re: [R] Two Y-axises and One X-axis
Hi, On Fri, 7 Nov 2003, umeno wrote: I would like to know if anyone knows how to draw a plot with two Y-axises and one X-axis? When you have two sets of y values that do not have the same scale, but correspond to the same x value, I would like to plot them on one graph. I think both Modern Applied Statistics with S (Venables and Ripley 2002) and Introductory Statistics with R (Dalgaard 2002) have some example. Basically one way to do this is to build the plot piece by piece (aka by first principle, or low-level plotting). For example, the axis() command can be useful: axis(1) # x-axis at the bottom axis(2) # y-axis on the left axis(4) # y-axis on the right -- Cheers, Kevin --- Ko-Kang Kevin Wang Master of Science (MSc) Student SLC Tutor and Lab Demonstrator Department of Statistics University of Auckland New Zealand Homepage: http://www.stat.auckland.ac.nz/~kwan022 Ph: 373-7599 x88475 (City) x88480 (Tamaki) __ [EMAIL PROTECTED] mailing list https://www.stat.math.ethz.ch/mailman/listinfo/r-help
Re: [R] y label after axis (4)
Hi, On Fri, 7 Nov 2003, umeno wrote: Then, I want to label the second y axis pay2. I tried title(ylab=pay2), but it put this lable on the first y-axis. Does anyone know how to move this to the second y-axis? ?mtext will do what you want. For example, here is a few codes from Venables and Ripley 2002 Modern Applied Statistics with S, Chapter 8.1: library(MASS) attach(wtloss) # alter margin 4; others are default oldpar - par(mar = c(5.1, 4.1, 4.1, 4.1)) plot(Days, Weight, type = p, ylab = Weight (kg)) Wt.lbs - pretty(range(Weight*2.205)) axis(side = 4, at = Wt.lbs/2.205, lab = Wt.lbs, srt = 90) mtext(Weight (lb), side = 4, line = 3) par(oldpar) # restore settings detach() Note that you can also get the above codes from $R_HOME/library/MASS/scripts/ch08.R. -- Cheers, Kevin --- Ko-Kang Kevin Wang Master of Science (MSc) Student SLC Tutor and Lab Demonstrator Department of Statistics University of Auckland New Zealand Homepage: http://www.stat.auckland.ac.nz/~kwan022 Ph: 373-7599 x88475 (City) x88480 (Tamaki) __ [EMAIL PROTECTED] mailing list https://www.stat.math.ethz.ch/mailman/listinfo/r-help
Re: [R] Program Saving
Hi, On Thu, 13 Nov 2003, Marc-Antoine Vaillant wrote: I have a very simple question. If a want to save a whole program (say more than 5 command lines), how can I proceed without each time using the command history (that allow me to recall previously saved command, but which is to long if you want to recall more than 5 command lines), or without saving to a text file and use copy/paste when I open a new R session (but in fact this doesn't work since when you copy your program to a text file, you copy the or the + , and when you paste it back to a new R command sheet, you get syntax error since you now have double () and double + (++) at each line. Please wrap your text to something like 80 character per line... Copy/paste works very well. Instead of copying from your R session over to a text editor, why don't you do it the other way round? i.e. type your R codes in your favourite editor, THEN copy/paste into R. That way you don't get any syntax error, and you have all your R codes saved into one file. There are several good tools. (X)Emacs/ESS is one of them (and it's the one I prefer). For beginners there is RWinEdt (a plugin, written by Uwe Ligges, for WinEdt). Both allows direct communication from the editor to R HTH. -- Cheers, Kevin --- Try not. Do, do! Or do not. There is no try Jedi Master Yoda Ko-Kang Kevin Wang Master of Science (MSc) Student SLC Tutor and Lab Demonstrator Department of Statistics University of Auckland New Zealand Homepage: http://www.stat.auckland.ac.nz/~kwan022 Ph: 373-7599 x88475 (City) x88480 (Tamaki) __ [EMAIL PROTECTED] mailing list https://www.stat.math.ethz.ch/mailman/listinfo/r-help
Re: [R] read.table(..)..Help?
On Thu, 20 Nov 2003, forkusam wrote: Hi; Thanks for the quick reply. I am presently not sittinh infront of my computer so I can't tell you the exact error message but. I have read through the documentation and have found nothing of help. Yes. the columns are separated by semicolons My problem is: I do not know the command / or parameter I need to read the rows and process the stored information one after the other. read.table() should know how to read each rows, can you provide an subset of your data? -- Cheers, Kevin --- Try not. Do, do! Or do not. There is no try Jedi Master Yoda Ko-Kang Kevin Wang Master of Science (MSc) Student SLC Tutor and Lab Demonstrator Department of Statistics University of Auckland New Zealand Homepage: http://www.stat.auckland.ac.nz/~kwan022 Ph: 373-7599 x88475 (City) x88480 (Tamaki) __ [EMAIL PROTECTED] mailing list https://www.stat.math.ethz.ch/mailman/listinfo/r-help
Re: [R] reading data rows
Hi, On Thu, 20 Nov 2003, forkusam wrote: to carry out mathematical calculations I have a a file of the form mu1 mu2 alpha betaWsigma sigmaA b r 2515 .05 .05 22 3.3.5 3020 .1 .2 22 .3.3.5 I intend to read one row , carry out the calculations and then the next row with which I intend to do the same calculations. I do the following. p-read.table(file=eingabe.csv, header=TRUE,sep=;) data.frame(as.numeric(mu1-p$mu1),as.numeric(mu2-p$mu2), as.numeric(alpha-p$alpha),as.numeric(beta-p$beta), as.numeric(Wsigma-p$Wsigma),as.numeric(sigmaA-p$sigmaA),as.numeric(b-p$b),as.numeric(r-p$r)) Is there any particular reason why you want to do this data.frame() line? To me it seems redundant. Each column is already in numeric/vector form, I believe. Error in uniroot(function(n) eval(p.body) - power, c(2, 1e+07)) : invalid function value in 'zeroin' In addition: Warning message: the condition has length 1 and only the first element will be used in: if (f(lower, ...) * f(upper, ...) = 0) stop(f() values at end points not of opposite sign) What kind of mathematical calculations were you trying to do when you got this error message? As discussed off-list last night, since you want to operate on each row using the same operation, have you tried using apply()? -- Cheers, Kevin --- Try not. Do, do! Or do not. There is no try Jedi Master Yoda Ko-Kang Kevin Wang Master of Science (MSc) Student SLC Tutor and Lab Demonstrator Department of Statistics University of Auckland New Zealand Homepage: http://www.stat.auckland.ac.nz/~kwan022 Ph: 373-7599 x88475 (City) x88480 (Tamaki) __ [EMAIL PROTECTED] mailing list https://www.stat.math.ethz.ch/mailman/listinfo/r-help
[R] strptime Usage
Hi, I have a column in a dataframe in the form of: as.vector(SLDATX[1:20]) [1] 1/6/1986 1/17/1986 2/2/1986 2/4/1986 2/4/1986 [6] 2/21/1986 3/6/1986 3/25/1986 4/6/1986 4/10/1986 [11] 4/23/1986 4/30/1986 5/8/1986 5/29/1986 6/15/1986 [16] 6/18/1986 6/23/1986 6/29/1986 7/16/1986 7/25/1986 I'd like to convert it into either -mm or /mm form, e.g. 1986-06 or 1986/06, and I've been suggsted to use the strptime() function. However when I look at the documentation of it and tried something like: strptime(as.vector(SLDATX)[1:20], %y/%m) [1] NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA I got a bunch of NA's. I also tried: strptime(as.vector(SLDATX)[1:20], %y/%m/%d) [1] 2001-06-19 NA 2002-02-19 2002-04-19 2002-04-19 [6] NA 2003-06-19 NA 2004-06-19 2004-10-19 [11] NA NA 2005-08-19 NA NA [16] NA NA NA NA NA It is totally messed up. I'd really appreciate if anyone can point out where I did wrong *_*! Many thanks in advance. -- Cheers, Kevin --- Try not. Do, do! Or do not. There is no try Jedi Master Yoda Ko-Kang Kevin Wang Master of Science (MSc) Student SLC Tutor and Lab Demonstrator Department of Statistics University of Auckland New Zealand Homepage: http://www.stat.auckland.ac.nz/~kwan022 Ph: 373-7599 x88475 (City) x88480 (Tamaki) __ [EMAIL PROTECTED] mailing list https://www.stat.math.ethz.ch/mailman/listinfo/r-help
RE: [R] strptime Usage
Thanks! On Wed, 26 Nov 2003, Gabor Grothendieck wrote: Date: Wed, 26 Nov 2003 00:34:11 -0500 (EST) From: Gabor Grothendieck [EMAIL PROTECTED] To: [EMAIL PROTECTED], [EMAIL PROTECTED] Subject: RE: [R] strptime Usage strptime takes a character input and produces a POSIXlt output so the format you specify to strptime is the format of the input, not the output: format( strptime(10/22/1986, %m/%d/%Y), %Y-%m ) It worked perfect. Just out of interest, if I want to convert (either from the original form, i.e. mm/dd/, or the -mm form, to quarterly format, e.g.: 1999-1 1999-2 1999-3 1999-4 is it possible to do with strptime? Or do I have to do something creative? ;-D -- Cheers, Kevin --- Try not. Do, do! Or do not. There is no try Jedi Master Yoda Ko-Kang Kevin Wang Master of Science (MSc) Student SLC Tutor and Lab Demonstrator Department of Statistics University of Auckland New Zealand Homepage: http://www.stat.auckland.ac.nz/~kwan022 Ph: 373-7599 x88475 (City) x88480 (Tamaki) __ [EMAIL PROTECTED] mailing list https://www.stat.math.ethz.ch/mailman/listinfo/r-help
[R] Julian Dates
Hi, I'm a bit confused how julian() works. If I understand right, it returns the number of days since the origin. I have a vector: SLDATX[1:10] [1] 1986-01-06 1986-01-17 1986-02-02 1986-02-04 [5] 1986-02-04 1986-02-21 1986-03-06 1986-03-25 [9] 1986-04-06 1986-04-10 And when I did: TIMESOLD - as.numeric(julian(as.POSIXlt(SLDATX), + origin = as.POSIXct(1986-01-01, ))) I got: TIMESOLD[1:10] [1] 5.0 16.0 32.0 34.0 34.0 51.0 [7] 64.04167 83.04167 95.04167 99.04167 THe first 6 values from TIMESOLD is obvious, however I'm not sure why I got decimals from the 7th value, as my input vector does not have any specific times after the dates. Any insights would be greatly appreciated...;-D -- Cheers, Kevin --- Try not. Do, do! Or do not. There is no try Jedi Master Yoda Ko-Kang Kevin Wang, MSc SLC STATS 10x Workshop Coordinator University of Auckland New Zealand Homepage: http://www.stat.auckland.ac.nz/~kwan022 Ph: 373-7599 x88475 __ [EMAIL PROTECTED] mailing list https://www.stat.math.ethz.ch/mailman/listinfo/r-help
Re: [R] Julian Dates
Thanks! chron() is very useful indeed. Just out of interest, is it possible to do, say in this case, the number of months (or quarters) after January 1986? i.e. use a different time interval? On Mon, 15 Dec 2003, Gabor Grothendieck wrote: What you can do to handle this timezone problem is either to use POSIXt with GMT or use chron (which does not use timezones so can't cause problems like this): Suppose: SLDATX - c( 1986-01-06, 1986-01-17, 1986-02-02, 1986-02-04, ,1986-02-04, 1986-02-21, 1986-03-06, 1986-03-25, ,1986-04-06, 1986-04-10 ) # then using POSIXt in the GMT timezone: TIMESOLD - as.numeric( julian( as.POSIXlt( SLDATX, tz=GMT ), origin = as.POSIXct( 1986-01-01, tz = GMT ) ) ) # or the alternative using chron: require(chron) TIMESOLD2 - as.numeric( chron( SLDATX, format=y-m-d, origin = c( month = 1, day = 1, year = 1986 ) ) ) all.equal(TIMESOLD,TIMESOLD2) -- Cheers, Kevin --- Try not. Do, do! Or do not. There is no try Jedi Master Yoda Ko-Kang Kevin Wang, MSc SLC STATS 10x Workshop Coordinator University of Auckland New Zealand Homepage: http://www.stat.auckland.ac.nz/~kwan022 Ph: 373-7599 x88475 __ [EMAIL PROTECTED] mailing list https://www.stat.math.ethz.ch/mailman/listinfo/r-help
Re: [R] Getting graphs into LaTeX
Hi,
- Original Message -
From: Andrew Criswell [EMAIL PROTECTED]
To: r-help [EMAIL PROTECTED]
Sent: Friday, August 22, 2003 2:17 AM
Subject: [R] Getting graphs into LaTeX
Hello ALL:
I ran with success the following commands in R getting a file saved
--
--
postscript()
postscript('~/data/st202/2003/lecture00/lecture00-graph-01.eps',
horizontal = FALSE, height = 6, pointsize = 10)
hist(trial.outcome.5, breaks = 5,
main = '1000 Replications of 5 Trials of a Coin Toss',
xlab = 'Frequency of a Tail')
--
--
Have you closed the postscript device? Normally you need a dev.off() after
you finished the plot. Try putting dev.off() after your hist().
The other thing is can you actually view lecture00-graph-01.eps in the
directory, with a postscript Viewer?
The last point, I think pdflatex (or pdftex) does not accept PS/EPS
formatted picture. Can you latex trix.tex? If so, try to save your
histogram as a PDF or PNG file, then pdflatex it again.
Cheers,
Kevin
Ko-Kang Kevin Wang
Master of Science (MSc) Student
Department of Statistics
University of Auckland
New Zealand
www.stat.auckland.ac.nz/~kwan022
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Re: [R] how could I add legends?
Hi, - Original Message - From: Qin Xin [EMAIL PROTECTED] To: [EMAIL PROTECTED] Sent: Monday, January 27, 2003 9:42 AM Subject: [R] how could I add legends? Hi All, I plotted several distribution curves in one graph but I do not know how to add legends say which is what distribution. Could someone help me? Thanks, Have a look at ?legend Kevin Ko-Kang Kevin Wang Master of Science (MSc) Student Department of Statistics University of Auckland New Zealand www.stat.auckland.ac.nz/~kwan022 __ [EMAIL PROTECTED] mailing list http://www.stat.math.ethz.ch/mailman/listinfo/r-help
Re: [R] Regarding Installation of R
- Original Message - From: saicharan komanduru [EMAIL PROTECTED] To: [EMAIL PROTECTED] Sent: Friday, January 31, 2003 7:31 AM Subject: [R] Regarding Installation of R Hi, I am trying to install R on Windows. I copied the set up binary. But it is corrupted on all the mirror sites. Please let know an alternative for getting the software. Which set up binary did you downloaded? It should not be corrupted. Did you download the rw1062.exe in, for example, http://cran.r-project.org/bin/windows/base ? Ko-Kang Kevin Wang Master of Science (MSc) Student Department of Statistics University of Auckland New Zealand www.stat.auckland.ac.nz/~kwan022 __ [EMAIL PROTECTED] mailing list http://www.stat.math.ethz.ch/mailman/listinfo/r-help
Re: [R] basic question
Hi, From your description I am guessing you're using Windows. What you may need is to compile this package from source. It is explained in one of the R manuals (I can't remember which one though). You can also look at my R Guide for Windows Users at http://www.stat.auckland.ac.nz/~kwan022/rinfo.php (Section 5). I'm not sure the exact contents in the labdsv_0.9-1.tar.gz , but in general you can first unpack it with, e.g.: tar zxvf labdsv_0.9-1.tar.gz then you may need: Rcmd labdsv_0.9-1 Hope this helps, Kevin Ko-Kang Kevin Wang Master of Science (MSc) Student Department of Statistics University of Auckland New Zealand www.stat.auckland.ac.nz/~kwan022 - Original Message - From: Archaux Frederic [EMAIL PROTECTED] To: '[EMAIL PROTECTED]' [EMAIL PROTECTED] Sent: Tuesday, February 04, 2003 9:46 PM Subject: [R] basic question Dear R users, Up to now, I only used precompiled packages. As I am working on vegetation ecology, I would be interested in using a package not stored by CRAN called labdsv_0.9-1.tar.gz and developped by Dave Roberts at the National Center for Ecological Analysis and Synthesis (unfortunately I did not find any corresponding .zip file). Although I tried to follow the proposed guidelines to install such a file in R, I did not succeed. I installed the library tools, the Perl and the MinGW softwares, but I feel all this stuff is useless in my case (my knowledge in informatic in so poor that I am reduced to intuitions!) I know this is probably one of the most FAQ, but I did not find the answer to my problem on the R-CRAN web site. Thank you in advance! Have a good day. Frédéric Archaux (PhD, Engineer) Biodiversity and Forest Management Team CEMAGREF Domaine des Barres F-45290 Nogent-sur-Vernisson FRANCE [[alternate HTML version deleted]] __ [EMAIL PROTECTED] mailing list http://www.stat.math.ethz.ch/mailman/listinfo/r-help __ [EMAIL PROTECTED] mailing list http://www.stat.math.ethz.ch/mailman/listinfo/r-help
