Re: [R] Creating a loop with an indefinite end term

2012-04-10 Thread Charilaos Skiadas
On Apr 10, 2012, at 1:08 PM, Steve Lavrenz wrote: I definitely need a loop - the example I gave was only a simple one. Say I want to do more complex calculations in each step, such that the numeric difference between consecutive terms is not constant. I will try out some of the methods

Re: [R] lattice panel question

2008-10-14 Thread Charilaos Skiadas
http://lmdvr.r-forge.r-project.org/figures/figures.html Look at Figure 10.24 and the code therein. You will likely want to define your own strip function, and the code in strip.combined could be your guide. If you have Deepayan's book, you can find more details in the relevant section.

Re: [R] Turn factors to numeric

2008-10-09 Thread Charilaos Skiadas
R-FAQ 7.10: http://cran.r-project.org/doc/FAQ/R-FAQ.html#How-do-I-convert-factors- to-numeric_003f On Oct 9, 2008, at 6:59 AM, joseph kambeitz wrote: I am having some problems while trying to fit simple data. I aggregated some data using: data1 - aggregate(data1$T2, list=(SOA=data1$SOA),

Re: [R] Dot plot - equivalent of MINITAB

2008-09-25 Thread Charilaos Skiadas
I think the problem is that what you describe is not what some people, R folks included, refer to as dotplot, though I suppose wikipedia as well as some other top google links seem to agree with you and minitab. What you describe I think can be obtained with something like: x-

Re: [R] paste in xtable

2008-09-23 Thread Charilaos Skiadas
Actually the '\\textbf' specification would work just fine. If you examine test[,1] you'll see it contains the correct thing. The problem is when print.xtable is called. This is because it automatically contains a function that sanitizes the character entries to fix characters that have a

Re: [R] Compiling date

2008-09-10 Thread Charilaos Skiadas
So, am I correct that each datum is either of the form mm/dd/yy or of the form dd/mm/? If that is correct, then the following should work, and takes care of converting 99 to 1999 instead of 2099: dates - c(06/15/07,04/09/99,20/03/2008) short - grep(\\d\\d/\\d\\d/\\d\\d$, dates,

Re: [R] match problem by rownames

2008-09-09 Thread Charilaos Skiadas
As suggested in ?[.data.frame, try: dat[match('a1', rownames(dat)),] Haris Skiadas Department of Mathematics and Computer Science Hanover College On Sep 9, 2008, at 2:41 AM, Xianming Wei wrote: Hi all, While dat['a1',] and dat['a10',] produce the same results in the following example, I'd

Re: [R] license for a university

2008-09-03 Thread Charilaos Skiadas
Try: license() On Sep 3, 2008, at 6:59 PM, Erin Hodgess wrote: Dear R People: I am trying to install R in a classroom here, but have been told that there must be a license. Is there such a thing with R, please? Since it is free, I assumed that there would be no license. Thanks for any

Re: [R] Parenthesis recognition with grep

2008-08-31 Thread Charilaos Skiadas
Try: myStr - YD\\(001\\) In POSIX format, or in most such formats in fact, special characters like parentheses have a particular meaning, and need to be escaped if they are to have the parenthesis meaning. This is done typically by putting a backslash in front of them. Since however a

Re: [R] Upgrading R means I lose my packages

2008-08-27 Thread Charilaos Skiadas
On Aug 27, 2008, at 10:40 PM, Rolf Turner wrote: On 28/08/2008, at 2:02 PM, James Milks wrote: The title says it all. Does anyone know of a way to save your packages when you upgrade to a new version of R? This may seem petty, but I'm accumulating enough packages that having to

Re: [R] keywords

2008-07-29 Thread Charilaos Skiadas
On Jul 29, 2008, at 5:24 AM, Edna Bell wrote: Hi R Gurus! When you build a package, you need to put in keywords in the Rd files. Where would you find the list of keywords, please? Simplest way is to google for r keywords. First hit is:

Re: [R] include S4 class and methods in a package

2008-06-28 Thread Charilaos Skiadas
On Jun 27, 2008, at 1:44 PM, baptiste Auguié wrote: DeaR list, Pardon the stupidity of this question but I've been trying this for a while now without success. I've followed the example given in the green book programming with data, and I now have a working example of a S4 class with a

Re: [R] Editor for Mac OSX

2008-06-18 Thread Charilaos Skiadas
One more advantage of TextMate is support for Sweave files. You can have a Sweave file open, and the LaTeX parts of it are syntax colored according to LaTeX and one can use all the facilities of the LaTeX extension (bundle) in LaTeX (which probably has some things similar to AucTeX, has a

Re: [R] Reshape or Stack? (To produce output as columns)

2008-06-17 Thread Charilaos Skiadas
On Jun 17, 2008, at 8:06 AM, Chuck Cleland wrote: On 6/17/2008 6:59 AM, Steve Murray wrote: Dear all, I have used 'read.table' to create a data frame of 720 columns and 360 rows (and assigned this to 'Jan'). The row and column names are numeric: columnnames - sprintf(%.2f, seq(from =

Re: [R] Lattice: Superpose bwplot on dotplot [Newbie Question]

2008-06-16 Thread Charilaos Skiadas
On Jun 16, 2008, at 12:13 PM, Lord Yo wrote: Hello everyone I have dataset containing a monetary value (ABS) and two factors (Fct, Group). I am able to create useful using: bwplot(ABS~Group|Fct) and dotplot(ABS~Group|Fct) Question: What do I have to do to overlay the dotplot with the

Re: [R] Subset by Factor by date

2008-06-14 Thread Charilaos Skiadas
Department of Mathematics and Computer Science Hanover College Charilaos Skiadas-3 wrote: On Jun 14, 2008, at 1:25 AM, T.D.Rudolph wrote: aggregate() is indeed a useful function in this case, but it only returns the columns by which it was grouped. Is there a way I can use this while

Re: [R] Rest of a division

2008-06-13 Thread Charilaos Skiadas
?%% On Jun 13, 2008, at 11:23 AM, Eric Ferreira wrote: Dear useRs, How do I ask for the rest of a division? For instantce, in C is like: 4%2 = 0 Best regards, -- Eric B Ferreira Exact Sciences Department Federal University of Lavras Brasil Haris Skiadas Department of Mathematics and

Re: [R] Subset by Factor by date

2008-06-13 Thread Charilaos Skiadas
On Jun 14, 2008, at 1:25 AM, T.D.Rudolph wrote: aggregate() is indeed a useful function in this case, but it only returns the columns by which it was grouped. Is there a way I can use this while simultaneously retaining all the other column values in the dataframe? e.g. add superfluous

Re: [R] How to change the class of data?

2008-06-12 Thread Charilaos Skiadas
On Jun 12, 2008, at 2:24 AM, Qman Fin wrote: Hi all, I have some data x, which are actualy consisted of numerical enties. But the class of this matrix is set to be factor by someone else. I used class(x), it turns out to be factor. So I can not calculate them. The typical approach is to

Re: [R] How to change the class of data?

2008-06-12 Thread Charilaos Skiadas
Seeing how there have been three wrong answers so far, I should point out that: 1) This is an FAQ: http://cran.r-project.org/doc/FAQ/R-FAQ.html#How- do-I-convert-factors-to-numeric_003f 2) Most of the other methods suggested so far fail if the example x used is not of the form 1:n. The

Re: [R] numbers as part of long character

2008-06-12 Thread Charilaos Skiadas
On Jun 12, 2008, at 5:06 PM, Marc Schwartz wrote: on 06/12/2008 03:46 PM Hua Li wrote: Hi, I'm looking for some way to pick up the numbers which are contained and buried in a long character. For example, outtree.new=(((B:1204.25,E:1204.25):7581.11,F:8785.36):8353.85,C: 17139.21); num.char =

Re: [R] numbers as part of long character

2008-06-12 Thread Charilaos Skiadas
On Jun 12, 2008, at 6:34 PM, Hua Li wrote: Thanks, Marc and Haris! I didn't know the values of the numbers beforehand, so the scan method won't work, but [^+-\\d.]+ will do! And Haris, I didn't intend to keep the information of which number is B, which is C etc when asking the question,

Re: [R] Increase Number of Decimals

2008-06-11 Thread Charilaos Skiadas
On Jun 11, 2008, at 12:17 PM, Neil Gupta wrote: R Users, I'm new to R and was wondering how I can show more decimal places when I run commands. If I'm simply running a correlation(ES,YM) how would I increase the number of decimal places R shows? When I run this it shows me . 9734044. How

Re: [R] fitting periodic 'sine wave' model

2008-06-10 Thread Charilaos Skiadas
In addition to Gabor's suggestion, note the following warning from ?nls Warning Do not use nls on artificial zero-residual data. The nls function uses a relative-offset convergence criterion that compares the numerical imprecision at the current parameter estimates to the residual

Re: [R] Using lm with a matrix?

2008-06-07 Thread Charilaos Skiadas
On Jun 7, 2008, at 8:13 AM, jonboym wrote: I'm trying to do a linear regression between the columns of matrices. In example below I want to regress column 1 of matrix xdat with column1 of ydat and do a separate regression between the column 2s of each matrix. But the output I get

Re: [R] Existence of formal arguments.

2008-06-05 Thread Charilaos Skiadas
On Jun 5, 2008, at 9:13 PM, Duncan Murdoch wrote: On 05/06/2008 8:23 PM, Rolf Turner wrote: I just discovered what seems to me to be a slight funny in respect of formal argument names. If I define a function foo - function(a,b){ ... whatever ...} then ``inside'' foo() the exists()

Re: [R] write.table() error

2008-06-05 Thread Charilaos Skiadas
I just managed to write things just fine, and then I recalled that I had a similar problem when teaching our students SPSS (Yes, I know, don't ask...), but the problem was effectively this: If a given file was open in Excel, then that file was locked and no other program could use it until

Re: [R] apply in apply

2008-05-30 Thread Charilaos Skiadas
On May 30, 2008, at 5:37 AM, baptiste Auguié wrote: Thank you for the suggestions (off-list as well). I think the best option may eventually be an explicit for loop to make things clearer. To clarify a bit, I've used the plot function in the example where in fact it is a numerical

Re: [R] A question about *read.table()*

2008-05-30 Thread Charilaos Skiadas
On May 30, 2008, at 7:56 PM, ss wrote: and I got an error message: exprSet - read.table('process_all4_GSA2.txt', row.names = 1,header =FALSE) Error in read.table(process_all4_GSA2.txt, row.names = 1, header = FALSE) : duplicate 'row.names' are not allowed I would say that's pretty

Re: [R] Problem with scatter plotting

2008-05-29 Thread Charilaos Skiadas
On May 29, 2008, at 9:56 PM, lek2k wrote: PLEASE do read the posting guide http://www.R-project.org/posting- guide.html and provide commented, minimal, self-contained, reproducible code. I (and certainly many others) have been using multiple points calls for a while now with no problems at

Re: [R] Including a tilde in a plotmath-type call

2008-05-29 Thread Charilaos Skiadas
On May 29, 2008, at 11:02 PM, [EMAIL PROTECTED] wrote: Suppose I have a plot plot(1:10, pch = ) And I want some text to indicate a Normal distrubition. I could do this: text(5, 6, substitute(XN(mu, sigma^2)), adj = 0) text(5.35, 6, ~, adj = 0) But that's clumsy, and depending on your

Re: [R] nlm and missing argument

2008-05-29 Thread Charilaos Skiadas
On May 29, 2008, at 11:54 PM, Redding, Matthew wrote: Dear R Gurus, I am having a little difficulty with nlm. I've searched the archives and found nothing that tells me why this is occuring -- though there are some slightly similar issues. A simple example:

Re: [R] can I do this with R?

2008-05-28 Thread Charilaos Skiadas
A google search for logistic regression with stepwise forward in r returns the following post: https://stat.ethz.ch/pipermail/r-help/2003-December/043645.html Haris Skiadas Department of Mathematics and Computer Science Hanover College On May 28, 2008, at 7:01 AM, Maria wrote: Hello, I am

Re: [R] Rotated text on a regression line

2008-05-27 Thread Charilaos Skiadas
I think this comment for ?par, meant for both crt and srt, applies: crt A numerical value specifying (in degrees) how single characters should be rotated. It is unwise to expect values other than multiples of 90 to work. Compare with srt which does string rotation. So I would say that

Re: [R] how to bind lists recursively

2008-05-27 Thread Charilaos Skiadas
On May 27, 2008, at 10:43 PM, Daniel Yang wrote: Dear all, I want to create a list that contains 0,1,2,3, ..., 1 as its elements. I used the following code, which apparently doesn't work very well. a - 0 for(i in 1:1) { a - list(a, i) } The result is not what I wanted. So how

Re: [R] Some problems with Sweave

2008-05-23 Thread Charilaos Skiadas
Try results=verbatim instead of results=tex. Haris Skiadas Department of Mathematics and Computer Science Hanover College On May 23, 2008, at 4:16 AM, [EMAIL PROTECTED] wrote: Dear R users, I'm working in a brief R-tutorial to a group of students. To make that I'm using Sweave but I've

Re: [R] How to pass variable of for loop on read table text

2008-05-23 Thread Charilaos Skiadas
?paste paste('text',y,'.txt', sep=) and you likely need data[[y]] instead of data$y. On May 23, 2008, at 9:05 PM, Jason Lee wrote: Hi, I have a couple of text and would like to automate of reading these multiple files using (namely; text1.txt, text2.txt) for(y in 3:10){

Re: [R] disaggregate frequency table into flat file

2008-05-22 Thread Charilaos Skiadas
On May 22, 2008, at 8:56 AM, maiya wrote: sorry, my mistake! the data frame should read: orig-as.data.frame.table(orig) orig Var1 Var2 Freq 1AA 40 2BA5 3AB 30 4BB 25 but basicaly i would simply like a sample of the original matrix ( which is a

Re: [R] 3D Area Diagram

2008-05-22 Thread Charilaos Skiadas
On May 22, 2008, at 3:04 PM, AlGates wrote: Hello, maybe someone can help me. I am looking for a possibility to plot a 3D area diagram like in Excel: http://www.microsoft.com/germany/mac/excel/images/chartbefore.jpg Watch this! Would be nice if someone had any idea about that. I don't

Re: [R] About Passing Arguments to Function

2008-05-22 Thread Charilaos Skiadas
On May 22, 2008, at 9:14 PM, Edward Wijaya wrote: Hi, Below I have a function mlogl_k, later it's called with nlm . __BEGIN__ vsamples- c(14.7, 18.8, 14, 15.9, 9.7, 12.8) mlogl_k - function( k_func, x_func, theta_func, samp) { tot_mll - 0 for (comp in 1:k_func) { curr_mll -

Re: [R] Computing Maximum Loglikelihood With nlm Problem

2008-05-21 Thread Charilaos Skiadas
Try: mlogl_out - nlm(mlogl, mean(vsamples), vsamples) or mlogl_out - nlm(mlogl, mean(vsamples), x=vsamples) The argument vsamples=vsamples is passed to mlogl, since nlm does not recognize it. But mlogl doesn't have a vsamples argument, only alpha and x arguments. So you have to either

Re: [R] Question about banking to 45 degrees.

2008-05-20 Thread Charilaos Skiadas
On May 20, 2008, at 2:34 PM, Deepayan Sarkar wrote: On 5/20/08, Joshua Hertlein [EMAIL PROTECTED] wrote: Hello, I am very interested in banking to 45 degrees as defined by William S. Cleveland in Visualizing Data. I like to do it in R as well as Excel, etc. With R I have come

Re: [R] Question about banking to 45 degrees.

2008-05-20 Thread Charilaos Skiadas
On May 20, 2008, at 5:59 PM, Deepayan Sarkar wrote: On 5/20/08, Charilaos Skiadas [EMAIL PROTECTED] wrote: Here is how I see it. Let me define a visual y-unit as the height of a unit of data in the y-direction, and similarly for a visual x-unit. Then the aspect ratio is the quotient

Re: [R] Histograms without bars

2008-05-19 Thread Charilaos Skiadas
Hi Andre, On May 19, 2008, at 4:28 PM, Andre Nathan wrote: Hello I'd like to plot a histogram of some data composed of real numbers. The bin width I'm using is ~ 0.01, which results in high values in the y axis, so that the area under each bar corresponds to the probability of the data

Re: [R] Figure environment and includegraphics options from Sweave

2008-05-18 Thread Charilaos Skiadas
On May 18, 2008, at 10:41 AM, BXC (Bendix Carstensen) wrote: Tha handy thinb about the fig=TRUE option in Sweave is that you do not have to bother about filenames and starting and stpping the device. I want the the resulting LaTeX to look as: \begin{Schunk} \begin{Sinput} x - seq(-2 * pi, 2

Re: [R] lattice: left-aligned text in strips?

2008-05-15 Thread Charilaos Skiadas
Nachricht- Von: Charilaos Skiadas [mailto:[EMAIL PROTECTED] Gesendet: Mittwoch, 14. Mai 2008 13:30 An: RINNER Heinrich Cc: [EMAIL PROTECTED] Betreff: Re: [R] lattice: left-aligned text in strips? On May 14, 2008, at 3:47 AM, RINNER Heinrich wrote: [adapted repost of question http

Re: [R] off topic

2008-05-15 Thread Charilaos Skiadas
On May 15, 2008, at 2:07 PM, lamack lamack wrote: Dear all, someone could explain why the following example is not a valid randomization scheme? Consider an experiment in which the six experimental units to be used are permanently fixed in a row and two treat- ments are to be randomly

Re: [R] lattice histogram problem with integers values and nint

2008-05-15 Thread Charilaos Skiadas
Two comments. First of all, I don't see how you can be sure that if you specify 365 bins, then each bin will contain exactly one day. In order to do that, you need to know that each bin has width exactly 1, and you don't tell lattice to use such a width, so it is likely choosing something

Re: [R] proto naming clash?

2008-05-15 Thread Charilaos Skiadas
On May 15, 2008, at 1:24 PM, David Katz wrote: Trying to learn Proto. This threw me: #startup r... library(proto) a - proto(x=10) a$x [1] 10 x - proto(x=100) x$x Error in get(x, env = x, inherits = TRUE) : invalid 'envir' argument Do I simply need to be careful to name proto objects

Re: [R] Inconsistent linear model calculations

2008-05-15 Thread Charilaos Skiadas
On May 15, 2008, at 5:37 PM, e-letter wrote: Below is direct copy from command terminals of both pcs (mandrake 92 with r 171; mandriva 2008 with r 251, respectively). R : Copyright 2003, The R Development Core Team Version 1.7.1 (2003-06-16) R is free software and comes with ABSOLUTELY NO

Re: [R] lattice: left-aligned text in strips?

2008-05-14 Thread Charilaos Skiadas
On May 14, 2008, at 3:47 AM, RINNER Heinrich wrote: [adapted repost of question http://tolstoy.newcastle.edu.au/R/e4/help/08/03/6260.html] Dear R community, by default, text in the strips of a trellis plot is centered in the strip. Is there a way to have the text left-aligned? For example:

Re: [R] win.graph() with more than one Lattice plot

2008-05-14 Thread Charilaos Skiadas
Deepayan's new book to the rescue again: http://lmdvr.r-forge.r-project.org/figures/figures.html? chapter=01;figure=01_04 Look at the code for this figure, especially the last two lines. Not sure that the fact that it's a win.graph device has much to do with this. Haris Skiadas

Re: [R] fancy text in pairs()

2008-05-14 Thread Charilaos Skiadas
On May 14, 2008, at 9:28 PM, [EMAIL PROTECTED] wrote: Dear List, I'm currently trying to produce a number of pairs() plots with special text labels in the diagonal panels giving the units for the various quantities. These labels stretch across multiple lines, with the names of the quantities

Re: [R] test

2008-05-13 Thread Charilaos Skiadas
On May 13, 2008, at 5:52 AM, Esmail Bonakdarian wrote: Tony Plate wrote: You probably should check this section in your R-help subscription options (via https://stat.ethz.ch/mailman/options/r-help/, I think): Receive your own posts to the list? Tony, Like jt I too have it set to receive

Re: [R] Format integer

2008-05-12 Thread Charilaos Skiadas
On May 12, 2008, at 5:22 PM, Anh Tran wrote: Hi, What's one way to convert an integer to a string with preceding 0's? such that '13' becomes '013' to be put into a string I've tried formatC, but they removes all the zeros and replace it with blanks formatC(13, width=10, format=d,

Re: [R] Hashes as S4 Classes, or: How to separate environments

2008-05-10 Thread Charilaos Skiadas
On May 10, 2008, at 7:30 AM, Hans W Borchers wrote: For learning purposes mainly I attempted to implement hashes/maps/ dictionaries (Python lingua) as S4 classes, see the coding below. I came across some rough S4 edges, but in the end it worked (for one dictionary). When testing ones sees

Re: [R] Is there in R a function equivalent to the mround, as found in most spreadsheets?

2008-05-09 Thread Charilaos Skiadas
On May 9, 2008, at 5:39 AM, Dieter Menne wrote: Dr. Ottorino-Luca Pantani ottorino-luca.pantani at unifi.it writes: Imagine that for a particular cuvette (I have 112 different cuvettes !!) you have to mix the following volumes of solution A, B, and C respectively. c(1803.02, 193.51,

Re: [R] LaTeX in system()

2008-05-08 Thread Charilaos Skiadas
This is exactly the problem: apps launched through the Finder do not go through the usual shell initialization process, where the PATH is typically set up. The two solutions would be to either use the full path to the command, or else start R.app from the Terminal, via the command: open

Re: [R] Is it possible to do fancy area plots?

2008-05-08 Thread Charilaos Skiadas
On May 8, 2008, at 9:11 PM, Sean Carmody wrote: Does anyone have any ideas about how you could use R to produce a fancy area plot like this one in the NY Times? http://tinyurl.com/6rr22g I certainly hope not, I wouldn't want my favorite statistics program to produce an area graph where

Re: [R] building a formula string bit by bit ..

2008-05-06 Thread Charilaos Skiadas
I would actually go with this: bits=c(1, 0, 1, 1, 0) paste(X, which(bits==1), sep=.,collapse=+) No need for the vars variable. Though admittedly it breaks down if bits is identically 0. Haris Skiadas Department of Mathematics and Computer Science Hanover College On May 6, 2008, at 3:11 PM,

Re: [R] figure margins too large for a barplot in png, pdf ok

2008-05-06 Thread Charilaos Skiadas
On May 6, 2008, at 10:43 PM, Alexy Khrabrov wrote: I've used to have a script with a barplot command it in, preceded by a png: png(graph.file,height=H,width=W) barplot(t,names.arg=breaks[2:(length(t)+1)],tck=gridlines) -- worked before R 2.6.2. When I tried it in R 2.6.2, which I have

Re: [R] Formating numbers

2008-05-05 Thread Charilaos Skiadas
On May 5, 2008, at 7:03 AM, pecardoso wrote: Maybe a very, very basic question but how can I get a vector of values with the specific format: 001,002,010,100 instead of: 1,2,10,100 Not perfect, but might get you started: sprintf(%03d,c(8:10,101)) or formatC(c(8:10,101), width=3, flag=0)

Re: [R] Lattice book

2008-04-30 Thread Charilaos Skiadas
Actually it's been out for a couple of weeks now at least. I just finished my first reading of it, and I must say it was spectacular. Congratulations Deepayan, the book gave me exactly the kind of lattice knowledge I needed, and then some. The graphics are really impressive and good

Re: [R] Making a data frame into a factor ?

2008-04-15 Thread Charilaos Skiadas
I think you want to look into ?stack. For example: x-data.frame(a=1:5,b=6:10) y- stack(x) Then x$values are the values, and x$ind is the factor. On Apr 15, 2008, at 9:36 PM, Paul Lynch wrote: Hi, I'm trying to do a linear regression style one-way ANOVA using some data in a data frame,

Re: [R] How to test if t[[cat]] exists ?

2008-04-15 Thread Charilaos Skiadas
On Apr 15, 2008, at 9:53 PM, Ng Stanley wrote: Hi, t - list(cat=1) exists(t) [1] TRUE exists(t[[cat]]) Error: unexpected symbol in exists(t[[cat exists(t[[\cat\]]) [1] FALSE Perhaps what you want is: cat %in% names(t) Thanks Stanley Haris Skiadas Department of Mathematics and

Re: [R] Number of words in a string

2008-04-09 Thread Charilaos Skiadas
On Apr 9, 2008, at 1:27 PM, Hans-Jörg Bibiko wrote: On 09.04.2008, at 17:46, Shubha Vishwanath Karanth wrote: To put it simple, C=c(My Dog, Its really good, Beautiful) Now, SOMEFUNCTION(C) should give: c(My, Its really, ) SOMEFUNCTION - function(x) gsub( *\\w+$, , x) But be aware

Re: [R] What to use for assignment, = or - ?

2008-04-06 Thread Charilaos Skiadas
On Apr 6, 2008, at 10:35 AM, Ben Bolker wrote: Bill.Venables at csiro.au writes: I've noticed an increasing tendency for people to use '=' rather than the older '-' symbol. When '=' became available as an assignment operator in S-PLUS in the late '90s my first reaction was to switch to

Re: [R] Definition of wrapper?

2008-03-30 Thread Charilaos Skiadas
On Mar 30, 2008, at 2:51 PM, Bryan Hanson wrote: I think I more or less understand what a “wrapper” is, but I’d like to hear how more experienced R users define it, and especially I'd like to know if there is a formal definition. In my reading, it seems like there are a fairly wide

Re: [R] Sweave - print \n ?

2008-03-29 Thread Charilaos Skiadas
Try adding strip.white=false on the code chunks: echo=false,results=tex, strip.white=false= hline() hline() @ Read ?RweaveLatex for more settings. or if you want this to happen in all code chunks add this early on in the rnw file: \SweaveOpts{strip.white=false} Haris Skiadas Department of

Re: [R] barplot as Trellis graphic

2008-03-28 Thread Charilaos Skiadas
of Mathematics and Computer Science Hanover College Charilaos Skiadas escribió: On Mar 27, 2008, at 1:47 PM, Agustin Lobo wrote: Thanks, it was a matter of reshaping the data matrix as I usually have it, ie: datos - data.frame(x=abs(round(rnorm(100,10,5))),y=abs(round(rnorm (100,2,1))),f=factor

Re: [R] barplot as Trellis graphic

2008-03-27 Thread Charilaos Skiadas
On Mar 27, 2008, at 1:47 PM, Agustin Lobo wrote: Thanks, it was a matter of reshaping the data matrix as I usually have it, ie: datos - data.frame(x=abs(round(rnorm(100,10,5))),y=abs(round(rnorm (100,2,1))),f=factor(round(runif(100,1,3 to become: datos2 -

Re: [R] Mean in bwplot

2008-03-23 Thread Charilaos Skiadas
On Mar 23, 2008, at 1:37 PM, Charilaos Skiadas wrote: panel.points(mean(x), y, col=red, ...) Correction, this should have probably been: panel.points(tapply(x, y, mean), y, col=red, ...) All this assuming you want horizontal boxplots. Haris Skiadas Department of Mathematics

Re: [R] (no subject)

2008-03-23 Thread Charilaos Skiadas
As you have not given us a reproducible example (namely we don't really know what test is), there are likely better ways to do this than what I am about to suggest, and you can find examples in the relevant plot functions likely, but I think what you want can be achieved using ifelse:

Re: [R] setAs vs setIs

2008-03-16 Thread Charilaos Skiadas
On Mar 16, 2008, at 8:12 PM, Christophe Genolini wrote: Hi the list I am fighting with the twins setAs and setIs... Here are some questions and comments (comments to myself but that migth be wrong, it is why I am posting them) 1. Very surprising : using setIs define 'is', 'as-' but not

Re: [R] Sealed for setGeneric

2008-03-13 Thread Charilaos Skiadas
On Mar 13, 2008, at 5:04 AM, Christophe Genolini wrote: Hi the list When two setGeneric occurs on the same function, the second erage the first and erase all the function previously define. Is it possible to prevent that ? Is it possible to declare a setGeneric that can not be erased

Re: [R] Odp: comparing two columns of a dataset on a graph

2008-03-10 Thread Charilaos Skiadas
On Mar 10, 2008, at 5:15 AM, Petr PIKAL wrote: Hi [EMAIL PROTECTED] napsal dne 10.03.2008 08:12:28: hello I want to compare the values of two columns of a dataset on a graph. Which graphic do you recommend ? It depends on what values you have and what you want to compare. plot(x,y)

[R] Calling plot with a formula, from within a function, using ..., and xlim

2008-03-09 Thread Charilaos Skiadas
I ran into a weird, to me at least, problem, and hoping someone can shed some light into it. In a nutshell, there seems to be some problem when one calls plot with a formula, from within another function, using ... to pass arguments, and one of those arguments being xlim (and only xlim

Re: [R] R error: Not able to launch R 2.6.2

2008-03-09 Thread Charilaos Skiadas
On Mar 9, 2008, at 12:12 PM, Keizer_71 wrote: Hi Everyone, I am having trouble using R. I am not sure what happen but when i start R, i am getting error message Fatal Error: Unable to restore saved data in .RData. Just google for unable to restore saved data in .RData. , and you are

Re: [R] How to navigate in layout() created graph?

2008-03-07 Thread Charilaos Skiadas
On Mar 7, 2008, at 7:18 AM, Rainer M Krug wrote: Hi I created a complex layout with using layout() and it looks exactly as I need it. But I don't want to print in the order in which the subfigure are numbered, but in a different order. How can I navigate in the layout so that I can specify

Re: [R] training svm

2008-03-07 Thread Charilaos Skiadas
On Mar 7, 2008, at 2:17 AM, Oldrich Kruza wrote: Hello Soumyadeep, if you store the data in a tabular file, then I suggest using standard text-editing tools like cut (say your file is called data.csv, fields are separated with commas and you want to get rid of the third and sixth column):

Re: [R] How to navigate in layout() created graph?

2008-03-07 Thread Charilaos Skiadas
On Mar 7, 2008, at 8:02 AM, Rainer M Krug wrote: On 07/03/2008, Charilaos Skiadas [EMAIL PROTECTED] wrote: On Mar 7, 2008, at 7:18 AM, Rainer M Krug wrote: Hi I created a complex layout with using layout() and it looks exactly as I need it. But I don't want to print in the order

Re: [R] How to navigate in layout() created graph?

2008-03-07 Thread Charilaos Skiadas
On Mar 7, 2008, at 8:41 AM, Rainer M Krug wrote: I'm not sure I understand it, why don't you want to just number the subfigures in the order in which you will draw them? Because i thought it would be easier the other way round? Thanks anyway Yes, I agree it should not be as hard as it

Re: [R] locate the rows in a dataframe with some criteria

2008-03-07 Thread Charilaos Skiadas
On Mar 7, 2008, at 10:50 AM, zhihuali wrote: Hi, netters, This is probably a rookie question but I couldn't find the answer after hours of searching and trying. Suppose there'a a dataframe M: x y 10 A 13 B 8 A 11 A I want to locate the rows where x =10 and y=A. I

Re: [R] R-Logo in \LaTeX

2008-03-06 Thread Charilaos Skiadas
On Mar 6, 2008, at 1:49 PM, Mag. Ferri Leberl wrote: Dear everybody! Is there a command in \LaTeX to display the R-Logo or has anybody made it up? Thank you in advance. Isn't it just an image? Hence you would include it like one usually includes images. Or do you mean something else?

Re: [R] read stata data file

2008-03-06 Thread Charilaos Skiadas
On Mar 6, 2008, at 9:05 PM, John Taffe wrote: Dear R-help list, I'm new to R. I tried to get R to read a Stata data file using the read.dta function in the package foreign, which I downloaded and extracted to C:\Program Files\R\R-2.6.2\library on my pc. I tried nora -

Re: [R] matrix inversion using solve() and matrices containing large/small values

2008-03-05 Thread Charilaos Skiadas
Sorry, I meant to send this to the whole list. On Mar 5, 2008, at 8:46 AM, Charilaos Skiadas wrote: The problem doesn't necessarily have to do with the range of data. At first level, it has to do with the simple fact that dfdb has rank 6 at most, (7 at most in general, though in your case

Re: [R] types of vectors / lists

2008-03-05 Thread Charilaos Skiadas
On Mar 5, 2008, at 2:56 PM, [EMAIL PROTECTED] wrote: Hello, I am an advanced user of R. Recently I found out that apparently I do not fully understand vectors and lists fully Take this code snippet: T = c(02.03.2008 12:23, 03.03.2008 05:54) Times = strptime(T, %d.%m.%Y %H:%M) Times

Re: [R] connectivity measure for graph nodes

2008-03-04 Thread Charilaos Skiadas
Mark, if I understand what you are asking, then you likely want either the Floyd-Warshall algorithm: http://en.wikipedia.org/wiki/Floyd-Warshall_algorithm or Djikstra's algorithm http://en.wikipedia.org/wiki/Dijkstra%27s_algorithm The package igraph seems to have some useful

Re: [R] simulating the anova

2008-03-04 Thread Charilaos Skiadas
On Mar 5, 2008, at 12:03 AM, Will Holcomb wrote: I have been trying to figure out how to run a simple simulation of the ANOVA and I'm coming up just a bit short. The code I've got is: cohen.f = .25 groups = 4 between.var = 19 within.var = between.var / cohen.f ^ 2 n = 500 sim.means

Re: [R] vertex labels in igraph from adjacency matrix

2008-03-04 Thread Charilaos Skiadas
On Mar 5, 2008, at 1:39 AM, Mark W Kimpel wrote: I am getting some unexpected results from some functions of igraph and it is possible that I am misinterpreting the vertex numbers. Eg., the max betweenness measure seems to be from a vertex that is not connected to a single other vertex.

Re: [R] Problem with lme4 use and installation

2008-03-03 Thread Charilaos Skiadas
Nothing's wrong. It just means that the package or one of its dependencies, has its own xtabs function, which hides the default xtabs function, since it comes first in the search path. So when you next write xtabs(...), it is this new xtabs that is being loaded. If you want to call the

Re: [R] read.zoo problem reading in date time

2008-03-03 Thread Charilaos Skiadas
On Mar 3, 2008, at 11:12 AM, stephen sefick wrote: x-read.zoo(SC2.csv, sep=, , format=%m%m/%d%d/%y%y%y%y %h%h:%m% m) #Error in read.zoo(SC2.csv, sep = ,, format = %m%m/%d%d/%y%y%y%y %h%h:%m%m) : index contains NAs Error message You need header=TRUE in there, since your

Re: [R] Newbie:Export Data into Excel from R

2008-03-02 Thread Charilaos Skiadas
You will likely need to escape that backslash, i.e. c:\\foo.csv. Haris Skiadas Department of Mathematics and Computer Science Hanover College On Mar 2, 2008, at 10:12 AM, Keizer_71 wrote: Hi, All i want is to export my list into c: drive and save it as csv file and manually import into

Re: [R] listing components of an object

2008-03-02 Thread Charilaos Skiadas
On Mar 2, 2008, at 4:12 PM, Nair, Murlidharan T wrote: Is there a method to list the components of an object, instead of looking at the help for that method? Let me be more clear with an example data(iris) ## tune `svm' for classification with RBF-kernel (default in svm), ## using

Re: [R] write.csv +RMySQL request

2008-02-29 Thread Charilaos Skiadas
The following worked for me (put together after reading ? textConnection). Put simply, all read/write command work with connections, which are if you like devices that know how to read or write things. textConnection creates such a device that writes (or reads if we used open=r) to/from an

Re: [R] help

2008-02-29 Thread Charilaos Skiadas
Have a look at the documentation of ?.libPaths, it seems to me that setting the variable R_LIBS_USER is what you would want to do. Haris Skiadas Department of Mathematics and Computer Science Hanover College On Feb 29, 2008, at 10:14 AM, Daoping Mo wrote: Dear Sir/Madam, I got some problem

Re: [R] Running LaTeX dvi previewer on MacOS X

2008-02-29 Thread Charilaos Skiadas
On Feb 29, 2008, at 12:38 PM, Michael wrote: On 29 Feb 2008, Frank E. Harrell, Jr. wrote: Several people have given great advice on how to successfully use X11 on Mac to so we can use the dvi previewer to view latex() output from Hmisc. Now after a version upgrade of X11 and X11sdk we

Re: [R] Running LaTeX dvi previewer on MacOS X

2008-02-29 Thread Charilaos Skiadas
On Feb 29, 2008, at 5:39 PM, Michael wrote: On 29 Feb 2008, Charilaos Skiadas wrote: On Feb 29, 2008, at 12:38 PM, Michael wrote: On 29 Feb 2008, Frank E. Harrell, Jr. wrote: Several people have given great advice on how to successfully use X11 on Mac to so we can use the dvi previewer

Re: [R] Raw histogram plots

2008-02-27 Thread Charilaos Skiadas
On Feb 27, 2008, at 8:16 AM, Andre Nathan wrote: On Wed, 2008-02-27 at 14:15 +1300, Peter Alspach wrote: If I understand you correctly, you could try a barplot() on the result of table(). Hmm, table() does the counting exactly the way I want, i.e., just counting individual values. Is

Re: [R] multi-level hierarchical logistic regression with sampling weight

2008-02-27 Thread Charilaos Skiadas
On Feb 27, 2008, at 11:04 PM, David Winsemius wrote: Rolf Turner [EMAIL PROTECTED] wrote in news:[EMAIL PROTECTED]: On 28/02/2008, at 11:28 AM, GUO, Qian wrote: Hi I would like to run a multi-level hierarchical logistic regression model with sampling weight? Is this possible with R?

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