On 02/13/2010 05:49 AM, Drew Smathers wrote:
Sent from my iPod
Yes, I can see that's a problem. Do you really want the solution?
Jim
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PLEASE do read the posting
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Отправлено из мобильной Яндекс.Почты: http://m.ya.ru/ymail
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and provide commented, minimal,
Something along these lines might do the trick:
orig - rep(sapply(seq(from=, to=, by=),
as.character), times=c(1, 2, 3, 4))
I've shortened the number of repetitions, so you can test it out and see if
it's what you're looking for (just change the values in the vector
On Jan 25, 2010, at 1:46 PM, Chuck White wrote:
Hello -- I would like to know of a more efficient way of writing the
following piece of code. Thanks.
options(stringsAsFactors=FALSE)
orig - c(rep('',10),rep('',
20),rep('',30),rep('',40))
Hello -- I would like to know of a more efficient way of writing the following
piece of code. Thanks.
options(stringsAsFactors=FALSE)
orig -
c(rep('',10),rep('',20),rep('',30),rep('',40))
orig.unique - unique(orig)
system.time(df -
Hi
is there a way in R to create a new column vector with the numbers of 2 others
columns simply appended?
Example : I have a column with provinces codes (1 to 19)
I have a second column with districts codes (1 to ##, depending on the province)
I want to create a third column with a code that
transform(DF, District_Unique = paste(Province, District, collapse = ''))
On Thu, Jan 21, 2010 at 12:34 AM, teurlai magali teurlai...@yahoo.fr wrote:
Hi
is there a way in R to create a new column vector with the numbers of 2
others columns simply appended?
Example : I have a column with
On Jan 20, 2010, at 9:34 PM, teurlai magali wrote:
Hi
is there a way in R to create a new column vector with the numbers
of 2 others columns simply appended?
Example : I have a column with provinces codes (1 to 19)
I have a second column with districts codes (1 to ##, depending on
the
On Jan 20, 2010, at 11:10 PM, Tena Sakai wrote:
Hi,
When I emulate what's suggested I get an error (shown below).
What does this mean?
Thank you.
Province - c(1, 1, 13)
District - c(1, 2, 2)
df$Distric_Unique - with(df, paste(Province, District, sep=.) )
Error in eval(substitute(expr),
I am considering testing:
Ho: Odds Ratio =1
H1: Odds Ratio 1
How can I generate data from the null distribution for a specific
configuration of a Fisher exact test?
Jim
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On Jan 18, 2010, at 10:15 PM, Jim Silverton wrote:
I am considering testing:
Ho: Odds Ratio =1
H1: Odds Ratio 1
How can I generate data from the null distribution for a specific
configuration of a Fisher exact test?
?r2dtable
--
David.
__
Hello,
I am running R on cygwin for windows.
File R1234 contains
data - read.table(data)
q()
On the command line I type
R --no-save -q R_PROFILE=R1234
returns
Error: could not find function read.table
THanks.
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R-help@r-project.org
Saleem,
I have no idea about this, but may be you can use other data.frame name
instead of data because data is a name of a function (see ?data).
good luck
milton
On Fri, Jan 15, 2010 at 3:33 PM, saleem mukhtar saleem...@yahoo.com wrote:
Hello,
I am running R on cygwin for windows.
File
-project.org] On
Behalf Of milton ruser
Sent: Friday, January 15, 2010 2:07 PM
To: saleem mukhtar
Cc: r-help@r-project.org
Subject: Re: [R] (no subject)
Saleem,
I have no idea about this, but may be you can use other data.frame name
instead of data because data is a name of a function (see ?data).
good
Hi,
I wonder how to pass several functions and their arguments as arguments to
a function. For example, the main function is
f = function(X ) {
process(X)
...
process(X)
}
I have a few functions that operate on X, e.g. g1(X, par1), g2(X, par2),
g3(X, par3). par1, par2 and par3 are
Hi Hao,
I suggest you try again, starting by read posting guide at footnote of this
email.
How about a title for the message? How about identify yourself?
bests
milton
On Tue, Dec 29, 2009 at 2:59 PM, Hao Cen h...@andrew.cmu.edu wrote:
Hi,
I wonder how to pass several functions and their
Hi
I am really struggling jsut putting the labels on the leaves of my dendrogram.
I have a dendrogram that i create using the hclust/as.dendrogram commands.
I then plot it...but i want to feed a file/list that contains all the labels of
the leaves of a dendrogram and others
that way if R
Hi,
i am new to the R-project but until now i have found solutions for every
problem in toturials, R Wikis and this mailing list, but now i have some
problems which I can't solve with this knowledge.
I have some data like this:
# sample data
head1 = a;b;c;d;e;f;g;h;i;k;l;m;n;o
data1 =
How do you perform a multicollinearity test using R. Also how do you perform
a selection stepwise to carry out a multiple regression analysis?
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http://www.lmgtfy.com/?q=multicollinearity+test+using+R
http://www.lmgtfy.com/?q=selection+stepwise+multiple+regression+analysis+using+R
Moritz
Karen Federico schrieb:
How do you perform a multicollinearity test using R. Also how do you perform
a selection stepwise to carry out a multiple
Steve Miller
OpenBI
847.778.1145
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.
JN
Message: 57
Date: Mon, 19 Oct 2009 17:48:12 +0200
From: Reynaerts, Jo jo.reynae...@econ.kuleuven.be
Subject: [R] (no subject)
To: r-help@r-project.org r-help@r-project.org
Message-ID:
603d249cbe0b304490d0f774142b8e0f01cdcb9a4...@econsrvex6.econ.kuleuven.ac.be
Content-Type
Dear R users
I have the following problem when calling optim() to minimize a function
f.obj (= outer loop) that calls another function f.con (a contraction
mapping, = inner loop). It seems to me that it is a numerical problem that I
currently fail to take into account when coding.
Calling
Dear R Community,
I am running GLM's within the MASS library. My data are overdispersed and
I am accounting for the overdispersion by using an ANOVA 'F' test instead of
ANOVA 'Chisq'. You will have to forgive me because I am new at this, but I
am not sure if R is conducting an ANOVA 'F'
Hi,
Does anyone know where the following package is available:
Holleczek B, Gondos A, Brenner H.
PeriodR - an R package to calculate long term survival estimates using period
analysis.
Methods of Information in Medicine 2009; 48: 123-128.
Thanks
Jens Oehlschlägel
--
GRATIS für alle
Hi Jens,
Take a look at http://www.krebsregister.saarland.de/improve/periodR_en.html
HTH,
Jorge
2009/10/1 Jens Oehlschlägel
Hi,
Does anyone know where the following package is available:
Holleczek B, Gondos A, Brenner H.
PeriodR - an R package to calculate long term survival estimates
Actually that is stated in paper abstract:
http://www.krebsregister.saarland.de/improve/periodR_en.html
Andris
2009/10/1 Jens Oehlschlägel oehl_l...@gmx.de:
Hi,
Does anyone know where the following package is available:
Holleczek B, Gondos A, Brenner H.
PeriodR - an R package to calculate
Hello,
I am having a problem understanding the lda package. I have a dataset here:
[,1] [,2] [,3]
[1,] 2.95 6.630
[2,] 2.53 7.790
[3,] 3.57 5.650
[4,] 3.16 5.470
[5,] 2.58 4.461
[6,] 2.16 6.221
[7,] 3.27 3.521
If I do the following;
names(d)-c(y,x1,x2)
d$x1 =
I want to comput prime component of a graph.
please guide mi.
thanks alot
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Hi,
On Sep 14, 2009, at 10:19 AM, asie soheili wrote:
I want to comput prime component of a graph.
please guide mi.
If you're working with graphs, you'll want to check out the igraph
package:
http://cran.r-project.org/web/packages/igraph/
http://igraph.sourceforge.net/
-steve
--
Steve
How would I make a histogram using R from a table in excel that has 4
variables, but I only want to use 2 of the columns to make the histogram?
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Hi Karen,
As you are just starting (I guess), I suggest you take a shortcut:
1. copy and paste the data from Excel to the notepad, and
save it as .TXT
2. If all is ok, you will have a tab-delimited file.
3. Be sure that your variables have its names on first line
4. read your data using
Karen
You can copy and paste data directly into R from Excel:
1. Mark the data including the headings in Excel
2. Ctrl-C
3. In R:
myDF - read.delim(clipboard)
Following from Milton:
hist(myDF$VARNAME)
or
hist(myD[,1]) #to plot 1st collumn
hist(myD[,2]) #to plot 2nd collumn
Schalk Heunis
On
Dear All
I hope you can help me with this small problem. I want to draw a normal
distribution line to this data:
p-rnorm(100, mean=5, sd=3000)
hist(p)
Kabeli
[[alternative HTML version deleted]]
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R-help@r-project.org mailing
A better subject for your question might have been helpful. There are many
options for hist and truehist in the MASS package, but this might help:
x=rnorm(100, mean=5, sd=3000)
hist(x, prob=T)
x2=density(x)
lines(x2$x,x2$y)
KABELI MEFANE wrote:
Dear All
I hope you can help me with
Thank you Sir
I have been trying to come up with the code for 6 hours thats why i ended up
forgetting the title.
Kabeli
--- On Sat, 12/9/09, David Freedman 3.14da...@gmail.com wrote:
From: David Freedman 3.14da...@gmail.com
Subject: Re: [R] (no subject)
To: r-help@r-project.org
Date
Hello,
I have a question about ipred package. I am working on a data set which
contains 1000 individual swho came from 588 regions.
I calculated misclassification error rate with cross validation and its
smooted version bootstrap 632 for different sample sizes in LDF. I am
doubting whether error
Hello Kim Gav,
Gavin Simpson gavin.simpson at ucl.ac.uk writes:
On Wed, 2009-09-09 at 14:43 +0200, Kim Vanselow wrote:
Dear r-Community,
Step1: I would like to calculate a NMDS (package vegan, function
metaMDS) with species data.
Step2: Then I want to plot environmental variables
Hi r-users,
I would like to know how to put all the data that is greater than certain value
in certain cell for my histogram. For example, since maximum value of p1 is
588 it doesn't fit in the breaks that we specified. Can we write breaks 300?
max(p1[,2])
pre.hist - hist(p1[,2],breaks =
Hi Roslina,
x-runif(1000,min=0, max=600)
hist(x)
x2-ifelse(x=300,x,300)
summary(x2)
hist(x2, ,breaks = c(0,50,100,150,200,250,300))
good luck
milton
On Mon, Sep 7, 2009 at 12:51 AM, Roslina Zakaria zrosl...@yahoo.com wrote:
Hi r-users,
I would like to know how to put all the data that is
May be you also want:
x-runif(1000,min=0, max=600)
x3-x[x=300]
summary(x3)
hist(x3, ,breaks = c(0,50,100,150,200,250,300))
bests
milton
On Mon, Sep 7, 2009 at 1:01 AM, milton ruser milton.ru...@gmail.com wrote:
Hi Roslina,
x-runif(1000,min=0, max=600)
hist(x)
x2-ifelse(x=300,x,300)
I'm trying to download this program and I'm not sure how to do it. Can you
help me with that? Thanks.
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Hi Karen.
If you are running windows, try:
http://cran.r-project.org/bin/windows/base/
Case it is Vista, see some tips on the same link.
cheers
milton
On Wed, Sep 2, 2009 at 8:13 PM, Karen Federico kfede...@stevens.edu wrote:
I'm trying to download this program and I'm not sure how to do
dear sir,
my data larger than this example but is of the following format:
y x Age
30 0.0323 O
24 0.0389 Y
158 0.058 Y
120 0.0581 O
100 0.0471 Y
102 0.0615 Y
160 0.0546 O
i ma making a scatter plot of y~x and want to specify different coloured
Setup a vector with the shapes and the colors you want that are the
same length as the number of levels in Age:
x - read.table('clipboard', header=TRUE)
x
y x Age
1 30 0.0323 O
2 24 0.0389 Y
3 158 0.0580 Y
4 120 0.0581 O
5 100 0.0471 Y
6 102 0.0615 Y
7 160 0.0546 O
Dear all,
I have a problem with the function read.xls from the gdata package, error
message see below. Two examples:
First, I try to read my data, which does not work;
Secondly, I tried the example code/data with the Iris data, which worked
Any idea?
Thanks,
Lars
The error message seems pretty clear here. It says that you
have to supply an integer to specify which sheet you
want -- not a sheet name. Also see ?read.xls which describes
the sheet argument as (emphasis added):
sheet ***number*** of sheet within the Excel file from which data are
to be read
The error message is: Error in library(lattice) : there is no package called
'lattice'
I have installed it twice because it did not work the first time, so I was not
sure if the installation worked out.
The strange thing is that the folder lattice is in the folder library.
Luba
Type:
library()
at the prompt to see what libraries are known to your system. You
might have a path name messed up or something. Here is part of the
output that shows on my system with 'lattice' shown
Packages in library 'C:/PROGRA~1/R/R-29~1.0/library':
base
I try to load the package lattice by library(lattice).
Although I have installed it through CRAN by internet as well as from a local
directory using the zip-file, it can't be loaded into the editor.
Can anyone give advice, please.
I am using R 2.9.1 on Widows XP.
Thanks a lot,
Luba
Exactly why are you trying to load it into the editor? What happens
when you execute 'library(lattice)' at the command line? Is there an
error message associated with it? Here is what I get:
library(lattice)
It loads just fine.
On Thu, Jul 30, 2009 at 11:08 AM, Stein, Luba (AIM
HiI am contacting you regarding a problem with downloading R. I cannot seen to
manage because my computer language is in Norwegian. DO you know if there is R
that can deal with Norwegian letters?
Øistein Harsem
_
Show them the way!
On Wed, Jul 29, 2009 at 03:12:02PM +0200, Øistein Harsem wrote:
HiI am contacting you regarding a problem with downloading R. I
cannot seen to manage because my computer language is in Norwegian.
DO you know if there is R that can deal with Norwegian letters?
I have never seen a download to
Hi
I am Niveen Samy. I am interesting by Linear Programming problem, and I want a
program to solve it using any language as Java ,pascal,c++,Miranda functional
programming language or any language can I learn it. If u have an already
solution to this problem please send it to me
I have no idea to be honest. I have never used the package, I simply did a
search for it. Hopefully a more experienced user can help
--- On Sun, 7/12/09, maram salem marammagdysa...@yahoo.com wrote:
From: maram salem marammagdysa...@yahoo.com
Subject: Re: [R] (no subject)
To: John Kane
Dear All,
I did a new installment of R on my office computer.
However, I encounter one technical problem with my R Help. When I write down
?, followed by the function I am interested in, the next message appears in
Help Menu:This program cannot display the webpage. Please, find attached
Hi Guys,
It is very simple question, but I can't find the answer! Please help me.
I use R and such simple function as length() doesn't work. The result is
always 1 even if my data are more then 1 observations!
Do I have to load any additional library?
length(Ret_1)
[1] 1
length
function (x)
Hi,
Could you please help me?
I am trying to load an csv-file in R, but it works wrong!
My data is
0,0127
-0,0016
0,0113
0,0037
-0,0025
Ret-read.csv(Ret.csv)
Ret
X0 X0127
1 016
2 0 113
3 037
4 025
Thank you in advance!
--
Best regards,
Andy
Hi Andriy Fetsun,
How about include a subject title on the subject of the email like length
funcion not work.
By the say, send us the result of str(your_object).
Bests
milton
brazil=toronto
On Thu, Jul 2, 2009 at 9:01 AM, Andriy Fetsun fet...@googlemail.com wrote:
Hi Guys,
It is very
On Jul 2, 2009, at 9:01 AM, Andriy Fetsun wrote:
Hi Guys,
It is very simple question, but I can't find the answer! Please help
me.
I use R and such simple function as length() doesn't work. The
result is
always 1 even if my data are more then 1 observations!
Do I have to load any
On Jul 2, 2009, at 6:47 AM, Andriy Fetsun wrote:
Hi,
Could you please help me?
I am trying to load an csv-file in R, but it works wrong!
My data is
0,0127
-0,0016
0,0113
0,0037
-0,0025
Ret-read.csv(Ret.csv)
Ret
X0 X0127
1 016
2 0 113
3 037
4 025
?read.csv
Use scan:
scan(Ret.csv, dec = ,)
On Thu, Jul 2, 2009 at 7:47 AM, Andriy Fetsun fet...@googlemail.com wrote:
Hi,
Could you please help me?
I am trying to load an csv-file in R, but it works wrong!
My data is
0,0127
-0,0016
0,0113
0,0037
-0,0025
Ret-read.csv(Ret.csv)
Ret
Well, what's Ret_1 ? It's hard to answer your question without that crucial
bit of information.
Try
str(Ret_1)
and let us know what it says.
My first guess is that Ret_1 is a list, e.g.:
testdata - list(f1=c(1,2,3,4))
length(testdata)
[1] 1
length(testdata[[1]])
[1] 4
str(testdata)
List of
Andriy Fetsun wrote:
Hi,
Could you please help me?
I am trying to load an csv-file in R, but it works wrong!
See ?read.csv and about decimal different characters.
Uwe Ligges
My data is
0,0127
-0,0016
0,0113
0,0037
-0,0025
Ret-read.csv(Ret.csv)
Ret
X0 X0127
1 016
2 0
Hi,
I am trying to load an csv-file in R, but it works wrong!
My data is
0,0127
-0,0016
0,0113
0,0037
-0,0025
Ret-read.csv(Ret.csv)
Ret
X0 X0127
1 016
2 0 113
3 037
4 025
This looks correct to me. The read.csv function assumes the first line
in the file is a
Andriy Fetsun
Verzonden: donderdag 2 juli 2009 12:48
Aan: r-help@r-project.org
Onderwerp: [R] (no subject)
Hi,
Could you please help me?
I am trying to load an csv-file in R, but it works wrong!
My data is
0,0127
-0,0016
0,0113
0,0037
-0,0025
Ret-read.csv(Ret.csv)
Ret
X0 X0127
1 0
Putting your two queries together [see revised Subject ... ]:
[R] (no subject)^1:
Could you please help me?
I am trying to load an csv-file in R, but it works wrong!
My data is
0,0127
-0,0016
0,0113
0,0037
-0,0025
Ret
X0 X0127
1 016
2 0 113
3 0
Hi,
1.) I am trying to calculate the autocorrelation function for returns based
on rolling window, but it doesn't work.
My code is
rollapply(Returns,20,acf).
2.) My next try is
rollapply(Returns_2,20,cor)
Error in FUN(cdata[st, i], ...) : supply both 'x' and 'y' or a matrix-like
'x'
Thank
On Wed, Jul 1, 2009 at 6:22 AM, Andriy Fetsunfet...@googlemail.com wrote:
Hi,
1.) I am trying to calculate the autocorrelation function for returns based
on rolling window, but it doesn't work.
My code is
rollapply(Returns,20,acf).
That's because acf returns a list. Try this:
Hi,
I am trying to calculate the volatility on not overlapping basis. Do you
know functions for not overlapping calculation?
It is like to take first 20 observations and apply st.dev to 20 and then
take next 20 observations and calculate st. deviation.
I tried with function rollapply(), but it
See the by= argument.
On Wed, Jul 1, 2009 at 11:08 AM, Andriy Fetsunfet...@googlemail.com wrote:
Hi,
I am trying to calculate the volatility on not overlapping basis. Do you
know functions for not overlapping calculation?
It is like to take first 20 observations and apply st.dev to 20 and
Hi Group,
I've a vector of 1000 numeric values for which I want to draw a histogram. I've
read this vector into R with no variable name.I mean only the 1000 values,
which makes V1 the name of the variable by default?? Then I tried
hist(V1, breaks = Sturges,
+ freq = NULL, probability =
--- On Tue, 6/30/09, maram salem marammagdysa...@yahoo.com wrote:
From: maram salem marammagdysa...@yahoo.com
Subject: [R] (no subject)
To: r-help@r-project.org
Received: Tuesday, June 30, 2009, 6:34 AM
Hi Group,
I've a vector of 1000 numeric values for which I want to
draw a histogram
I assume that when you read in the data, you assigned it to an object; e.g.,
myData - read.table(yourFile)
you can then plot a histogram by:
hist(myData$V1)
you may need to reread Introduction to R that comes with the software.
On Tue, Jun 30, 2009 at 6:34 AM, maram salem
Hi group,
I found a module for adaptive kernel density estimation for Stata users, but
unfortunetly I don't have access to Stata, can I find a similar approach using
R?
[[alternative HTML version deleted]]
__
R-help@r-project.org
Perhaps?
http://finzi.psych.upenn.edu/R/library/quantreg/html/akj.html
--- On Mon, 6/29/09, maram salem marammagdysa...@yahoo.com wrote:
From: maram salem marammagdysa...@yahoo.com
Subject: [R] (no subject)
To: r-help@r-project.org
Received: Monday, June 29, 2009, 9:05 AM
Hi group,
I
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PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
Christophe Genolini cgeno...@u-paris10.fr wrote
Thanks for yours answers. So if I understand:
- Trajectories are continuous, the other are discrete.
- The difference between time series and longitudinal is that time
series are made at regular time whereas longitudinal are not ?
- Repeated
Although you factorized subject and condition when you created them as
separate objects, this didn't survive cbind() then as.data.frame(),
thus
example-data.frame(cbind(subject,condition,recall))
str(example)
'data.frame': 30 obs. of 3 variables:
$ subject : int 1 2 3 4 5 6 7 8 9 10 ...
Hi R-users,
I try to use sn package but it give me the following message:
install.packages(repos=NULL,pkgs=c:\\Tinn-R\\sn_0.4-12.zip)
Warning: package 'sn' is in use and will not be installed
updating HTML package descriptions
I did tried a few time to save the .zip file but it give me the
use _search()_ to see if the package is on the search path. If yes,
use _detach(package:sn,unload=TRUE)_ to detach it and then try to
install it again.
Ronggui
2009/6/1 Roslina Zakaria zrosl...@yahoo.com:
Hi R-users,
I try to use sn package but it give me the following message:
On Mon, May 18, 2009 at 9:22 AM, Thomas Lumley tlum...@u.washington.edu wrote:
On Mon, 18 May 2009, Debbie Zhang wrote:
Based on a set of binomial sample data, how would you utilize the nlm
function in R to estimate the true proportion of the population?
I can't see why anyone would want to
Dear R users,
Based on a set of binomial sample data, how would you utilize the nlm
function in R to estimate the true proportion of the population?
Thanks.
Debbie
_
[[elided Hotmail spam]]
[[alternative HTML version
On Mon, 18 May 2009 17:33:51 +1030 Debbie Zhang
debbie0...@hotmail.com wrote:
DZ Based on a set of binomial sample data, how would you utilize the
DZ nlm function in R to estimate the true proportion of the
DZ population?
Dear Debbie,
This is a list that is mainly intended helping people if
Dear Debbie,
can you **PLEASE** use a 'Subject' in your postings to R-help,
and also (see below)
DZ == Debbie Zhang debbie0...@hotmail.com
on Mon, 18 May 2009 17:33:51 +1030 writes:
DZ Dear R users,
DZ Based on a set of binomial sample data, how would you
DZ utilize the
On Mon, 18 May 2009, Debbie Zhang wrote:
Based on a set of binomial sample data, how would you utilize the nlm
function in R to estimate the true proportion of the population?
I can't see why anyone would want to use nlm() for this. The sample
proportion is the MLE, and binom.test() gives
hi
if I have sample of discret observations, and I want to test if this sample is
follwed by a certion discret distribution for example: geometric distribution,
negative binomial distribution, and so on (i.e chisq-goodness of fit test),
how can I do this in R
in S+ we can use (chisq.gof)
Dear R users,
I incurred some problems with importing data into R.
i.e. If I want to import a text file or word file which contains lots of
numerical numbers, what function should I use?
Please help.
Thanks a lot.
Debbie
Debbie Zhang schrieb:
Dear R users,
I incurred some problems with importing data into R.
i.e. If I want to import a text file or word file which contains lots of
numerical numbers, what function should I use?
It does help if you read the posting guide first. In general, the file
has to
On Sat, May 16, 2009 at 12:05 PM, Debbie Zhang debbie0...@hotmail.com wrote:
Dear R users,
Does anyone know how to write a function involving derivative?
i.e. I want to implementing Newton's method in R, so my function is something
like
x- x-y/y'
I am not sure how to write y' in my
Dear R users,
Does anyone know how to write a function involving derivative?
i.e. I want to implementing Newton's method in R, so my function is something
like
x- x-y/y'
I am not sure how to write y' in my function. Can anyone help?
In addition, if I want to implementing newton's method
Hi,
I have a question about derivatives of functions.
if i have the following function,
f - function(x) x^3-2*x^2+3*x-5
i need a simple function for the derivative of this with respect to 'x', so
that i can then sub in values to the the derivative function, and use Newtons
method of finding
Kon Knafelman wrote:
if i have the following function,
f - function(x) x^3-2*x^2+3*x-5
i need a simple function for the derivative of this with respect to 'x',
so that i can then sub in values to the the derivative function, and use
Newtons method of finding a root for this.
if i have the following function,
f - function(x) x^3-2*x^2+3*x-5
i need a simple function for the derivative of this with respect to
'x', so that i can then sub in values to the the derivative
function, and use Newtons method of finding a root for this.
You could take a look at
Dear R users,
Does anyone know how to graph the function below?
sqrt(2)Î(n/2)/[sqrt(n â 1)Î((n â 1)/2]
Please help.
Debbie
_
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?curve
just create an R expression for the equation and then plot it. I am not
sure exactly what your expression is supposed to be.
On Tue, May 12, 2009 at 10:22 PM, Debbie Zhang debbie0...@hotmail.comwrote:
Dear R users,
Does anyone know how to graph the function below?
On 13/05/2009, at 2:22 PM, Debbie Zhang wrote:
Dear R users,
Does anyone know how to graph the function below?
sqrt(2)Γ(n/2)/[sqrt(n − 1)Γ((n − 1)/2]
Yes, pretty well everyone knows how to graph it.
Please help.
No. Do your own homework.
cheers,
Could you help me with a problem? I should put non-linear variables into
zelig-model, how can that be done? I'm dealing with air pollution data,
trying to find out daily associations between mortality and air pollutants.
Weather variables used as confounders are in some cases non-linear.
On May 9, 2009, at 5:39 AM, Jaana Kettunen wrote:
Could you help me with a problem? I should put non-linear variables
into
zelig-model, how can that be done? I'm dealing with air pollution
data,
trying to find out daily associations between mortality and air
pollutants.
Weather
Dear Helen,
bootstrapped standard errors are currently not supported in 'plm'.
Cheers,
Giovanni
--
Original Message:
Date: Wed, 22 Apr 2009 23:23:26 -0700 (PDT)
From: Helen Chen 96258...@nccu.edu.tw
Subject: [R] question of plm package
To: r-help@r-project.org
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