[R] Incidence estimated from Kaplan-Meier

Dear all, I have a stat question that may not be related to R, but I would like to have your advice. I have just read a medical paper in which the authors report the 1-p (where p is the cumulative survival probability from the Kaplan Meier curve) as incidence of disease. Specifically,

[R] pgup/pgdown in R Graphics Window under Linux

Dear S-users. This should be an easy one: How do I change pages on an X11 graphics device under linux? I thought that the page-up/page-down keys were supposed to do the trick, but the frame (window) seems to be kind of immune to any kind of keyboard input. The only reaction I ever see is that

[R] ggplot2 customizing

Dear all, I know that ggplot2 documentation is coming along, but at the moment I can't find how to do the following: a) change the title of the legend b) get rid of the closing line at the bottom of the density line. I also observed that the density lines (after limiting the x-scale) extend a

Re: [R] ggplot2 customizing

Hi Ido, On 7/5/07, Ido M. Tamir [EMAIL PROTECTED] wrote: Dear all, I know that ggplot2 documentation is coming along, but at the moment I can't find how to do the following: a) change the title of the legend There's lot of examples in the documentation - and you seem to have figured how to

Re: [R] Lookups in R

the problem I have is that userid's are not just sequential from 1:n_users. if they were, of course I'd have made a big matrix that was n_users x n_fields and that would be that. but, I think what I cando is just use the hash to store the index into the result matrix, nothing more. then the rest

[R] Loop and function

Hi All, I am trying to make a loop for a function and I am using the following codes. p and var are some matrix obtained before. I would like to apply the function gpdlow for i in 1:12 and get the returnlow for i in 1:12. But when I ask for returnlow there are warnings and it turns out some

[R] getting values from arrays using which()

Dear R-Help, I have an array 1260x1260, upper triangle consisting of numbers between 0 and 100, and lower triangle all NA. I can extract the index of those values say above 99 using the following code: which(myArray=99 , ind.arr=T) which returns: row col 5475 252 253 45423 764 765

Re: [R] getting values from arrays using which()

ndx - which(myArray=99 , ind.arr=T) cbind(ndx, myArray[ndx]) Best regards Frede Aakmann Tøgersen Scientist UNIVERSITY OF AARHUS Faculty of Agricultural Sciences Dept. of Genetics and Biotechnology Blichers Allé 20, P.O. BOX 50 DK-8830 Tjele Phone: +45 8999 1900 Direct: +45 8999 1878

[R] t-values for two-way interactions

I have a model with 3 fixed factors (type, stress, MorD) and two significant two-way interactions (type*stress, stress*MorD). x$summary # Estimate Std.Error DF t.value pvals ci950 ci990 ci999 #(Intercept)241.738 8.757 994 27.606 0e+00 TRUE TRUE TRUE #typePsPr

[R] select data from large CSV file

Hello I’ve got a large CSV file (500M) with statistical data. It’s devided in 12 columns and I don’t know how many lines. The second column is the date and the second is a unique code for the location, the rest is (lets say different whether data. See example below. 070704, 25,

Re: [R] Loop and function

Exactly how are you accessing it and what warnings are you getting. Your loop is just returning a single value; the last time i=12. If you want a vector of values back, the you have to do: returnlow - numeric(12) for (i in 1:12){ gpdlow - function(u){ p[,i]$beta -u*p[,i][[2]] }

Re: [R] Lookups in R

You are getting two very different results in what you are comparing. system.time(lapply(1:10^4, mean)) user system elapsed 1.310.001.31 is returning a list with 10,000 values in it. It is taking time to allocate the space and such. system.time(for(i in 1:10^4) mean(i)) user

Re: [R] Problem/bug with smooth.spline and all.knots=T

Hubertus wrote: Dear list, if I do smooth.spline(tmpSec, tmpT, all.knots=T) with the attached data, I get this error-message: Note that you cannot attach data that way. You migth want to upload it to some web space and send us the link. Uwe Ligges Error in smooth.spline(tmpSec,

Re: [R] Please help with legend command

Smith, Phil (CDC/CCID/NCIRD) wrote: Hi R-ers: I'm drawing a plot and have used different line types (lty) for different race/ethnicity groups. I want a legend that explains what line types correspond to the different race/ethnicity groups. I used the following code: legend( 1992 , 42

Re: [R] Loop and function

You do not have matching parentheses in this line returnlow - gpdlow(var[,i][var[,i](p[,i][[2]]) most likely there is a syntax error that halts the execution of the assignment statement? --- livia [EMAIL PROTECTED] wrote: Hi All, I am trying to make a loop for a function and I am using

[R] converting list to an array

Hi, I have a list myList (see below) that consists of id's $'7',,$'10' and each id has an individual array, the length of which can vary from id to id. How can I convert this list into an array, ie. stacking the individual arrays into one large array? Thanks Zava myList: $`7`

[R] (no subject)

I'm trying to plot a variogram of a time series, but I can't find anything that is suitable for a time series. Can anyone help me. [[alternative HTML version deleted]] __ R-help@stat.math.ethz.ch mailing list

Re: [R] working with R graphics remotely

Better still IMHO - try NX or FreeNX. That runs an xclient (also of course an xserver underneath) on your WIndows desktop. Windows pop up as required. NX compression means that you get very impressive speed, mouse response etc. A server also needs installing on the Linux box so you may have

Re: [R] Loop and function

Thanks a lot. I have corrected this. But it still does not work. Any thought? Stephen Tucker wrote: You do not have matching parentheses in this line returnlow - gpdlow(var[,i][var[,i](p[,i][[2]]) most likely there is a syntax error that halts the execution of the assignment statement?

Re: [R] Incidence estimated from Kaplan-Meier

Nguyen Dinh Nguyen wrote: Dear all, I have a stat question that may not be related to R, but I would like to have your advice. I have just read a medical paper in which the authors report the 1-p (where p is the cumulative survival probability from the Kaplan Meier curve) as

[R] Is it a bug ?

[[diverted from R-bugs to R-help by the list maintainer]] Dear Friend and distinguished R gurus, first of all really thank you very much for the marvellous tool that is R. I am using R 2.5.0, windows XP - italian language. I was perfoming some calculation on fractional

Re: [R] Loop and function

What does gpdlow(var[,i][var[,i](p[,i][[2]]) return? Is it a vector; if so, how long? Your declaration of returnlow- matrix(,12) str(returnlow) logi [1:12, 1] NA NA NA NA NA NA ... is a matrix of 12 rows and one column. You may be getting the error message is gpdlow is returning a

Re: [R] Loop and function

I tried str(gpdlow(var[,i][var[,i](p[,i][[2]])) and it returns num [1:49] -1.92 -1.69 -2.20 -1.65 -2.13 ... It is the number when i=1, I guess it does not loop. In fact, the number should be different when loop between i. jim holtman wrote: What does gpdlow(var[,i][var[,i](p[,i][[2]])

Re: [R] Is it a bug ?

I don't get your point, because exp(-(-3)^2.2) [1] NaN is correct. A negative value to the power of a non-integer is undefined in IR. Of course it is defined as a complex number: exp(-(-3+0i)^2.2) [1] 1.096538e-04-3.47404e-05i Uwe Ligges Giuseppe PEDRAZZI wrote:

Re: [R] Incidence estimated from Kaplan-Meier

The 1-Pr(disease free survival) estimate from KM is not appropriate if competing risk of mortality (from causes other than the disease of interest) are present. In that case, 1-Pr(disease free survival) over-estimates the cumulative incidence of disease. The larger the hazard of mortality, the

Re: [R] Loop and function

Thanks. Yes, gpdlow is indeed return a vector longer than one. The length of the vector is different for i in 1:12, each equals to length(var[,i][var[,i](p[,i][[2]]). jim holtman wrote: What does gpdlow(var[,i][var[,i](p[,i][[2]]) return? Is it a vector; if so, how long? Your

[R] model-based question-better readable version

It is going to be easy question to you. I've started to interest in model-based clustering. Adrian E. Raftery Recent Advances in Model-Based Clustering: Image Segmentation and Variable Selection (www.stat.washington.edu/Raftery)showed that we can compare different classification methods using

Re: [R] Is it a bug ?

On Thu, 5 Jul 2007, Giuseppe PEDRAZZI wrote: I am using R 2.5.0, windows XP - italian language. I was perfoming some calculation on fractional exponential and I found a strange behaviour. I do not know if it is really a bug, but I would expect a different answer from R. I was trying the

[R] Levene Test with R

Hi All, is there Levene' test in R ? If not ,Could you give me some advice about Levene test with R? Thanks a lot! I am waiting for yours. __ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the

Re: [R] Question for svm function in e1071

adschai : this isn't particularly helpful but when I am using a function from a package called xxx that I have little knowledge about, I take the source as is and create my own function out of It called my.xxx and then put print statements Inside it to see what's going on. This is probably an

Re: [R] Levene Test with R

Hi, RSiteSearch(Levene Test, restrict=functions) -- Henrique Dallazuanna Curitiba-Paraná-Brasil 25° 25' 40 S 49° 16' 22 O On 05/07/07, along zeng [EMAIL PROTECTED] wrote: Hi All, is there Levene' test in R ? If not ,Could you give me some advice about Levene test with R? Thanks

Re: [R] Levene Test with R

I got it! Thank all of you,Sorry I am a freshman of R. 2007/7/5, Chuck Cleland [EMAIL PROTECTED]: along zeng wrote: Hi All, is there Levene' test in R ? If not ,Could you give me some advice about Levene test with R? Thanks a lot! I am waiting for yours. Did you try

Re: [R] Levene Test with R

along zeng wrote: Hi All, is there Levene' test in R ? If not ,Could you give me some advice about Levene test with R? Thanks a lot! I am waiting for yours. Did you try RSiteSearch(levene, restrict=function), which points to a funtion in the car package?

Re: [R] converting list to an array

if by array, you just mean vector, then the following would work . stack(myList) If you want to take off the names of myList that get put in the second column stack(myList)[,-2,drop=FALSE] -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Aydemir, Zava

Re: [R] Levene Test with R

I got it! Thank all of you,Sorry I am a freshman of R. 2007/7/5, Tomas Goicoa [EMAIL PROTECTED]: Hi, library(car) ?levene.test At 16:36 5/7/2007, along zeng wrote: Hi All, is there Levene' test in R ? If not ,Could you give me some advice about Levene test with R?

[R] Adding points to a wireframe with conditioning variable

I would like to add points to a wireframe but with a conditioning variable. I found a solution for this without a conditioning variable here, http://finzi.psych.upenn.edu/R/Rhelp02a/archive/65321.html. Does anyone know how to plot a wireframe conditioned on a variable and add the points

[R] sink() and source()

hello, I have a problem running a R script actually I'm using source() and sink() and it doesn't work source(T:/agents/melyakhlifi/R/essai_rep.r) to execute a file and the file contain sink(T:/agents/melyakhlifi/R/sortie.html) cat(htmlbodypre\n) matrix.merge2 cat(/pre/body/html\n) sink() I

Re: [R] Levene Test with R

Hi, library(car) ?levene.test At 16:36 5/7/2007, along zeng wrote: Hi All, is there Levene' test in R ? If not ,Could you give me some advice about Levene test with R? Thanks a lot! I am waiting for yours. __

Re: [R] select data from large CSV file

Hi Lars, I haven't tried this, but I believe there were a couple of messages on the list recently on reading large files that basically used scan with connections, and reading in by blocks. see ?scan, ?connections HTH steve Lars Modig wrote: Hello I’ve got a large CSV file (500M) with

[R] summarizing dataframe at variable/factor levels

All, Is there an efficient way to apply say mean or median to a dataframe according to say all combinations of two variables in the dataframe? Below is a simple example and the outline of a manual solution that will work but is not very efficient (could also generalize this to a function).

Re: [R] sink() and source()

I don't know what is causing your problem, But if you goal is to produce html then you may want to look at the R2HTML package. It may do what you want without using sink. Hope this helps, -- Gregory (Greg) L. Snow Ph.D. Statistical Data Center Intermountain Healthcare [EMAIL PROTECTED] (801)

Re: [R] Question about framework to weighting different classes in SVM

Adschai: here is an example for class.weights (isn't it on the help page?): data(iris) i2 - iris levels(i2$Species)[3] - versicolor summary(i2$Species) wts - 100 / table(i2$Species) wts m - svm(Species ~ ., data = i2, class.weights = wts) Cheers, David

Re: [R] summarizing dataframe at variable/factor levels

Try this: aggregate(dat.ex[2:3], dat.ex[4:5], mean) On 7/5/07, Afshartous, David [EMAIL PROTECTED] wrote: All, Is there an efficient way to apply say mean or median to a dataframe according to say all combinations of two variables in the dataframe? Below is a simple example and the

Re: [R] Lookups in R

On 7/5/07, jim holtman [EMAIL PROTECTED] wrote: You are getting two very different results in what you are comparing. system.time(lapply(1:10^4, mean)) user system elapsed 1.310.001.31 is returning a list with 10,000 values in it. It is taking time to allocate the space and

Re: [R] summarizing dataframe at variable/factor levels

Afshartous, David afshart at exchange.sba.miami.edu writes: All, Is there an efficient way to apply say mean or median to a dataframe according to say all combinations of two variables in the dataframe? ..[snip].. See function summaryBy in package doBy

Re: [R] summarizing dataframe at variable/factor levels

my.data - data.frame( trts - rep(c('Drug 1','Drug2'), each = 10), doses - rep(c('Low dose','High dose'), 10), resp - rnorm(20) ) tapply(my.data$resp, list(my.data$trts, my.data$doses), mean) Jim Afshartous, David wrote: All, Is there an efficient way to

Re: [R] Loop and function

Please show use the statements that you used. Did you put the 'str' inside the loop? It is hard to tell what is happening without reproducible code. On 7/5/07, livia [EMAIL PROTECTED] wrote: I tried str(gpdlow(var[,i][var[,i](p[,i][[2]])) and it returns num [1:49] -1.92 -1.69 -2.20 -1.65

[R] Information on objects of class by

Hi all, Does anyone know where to find more information on the by class? OR Does anyone know how to coerce an object of the by class into a data.frame containing the results of FUN and the values of the grouping variables?

Re: [R] The R Book by M. J. Crawley

Pietrzykowski, Matthew (GE, Research) [EMAIL PROTECTED] wrote: Hello all- I would appreciate any guidance that can be provided. I am new to R and am using it exclusively in a statistics program I am undertaking that mainly references Minitab. My focus is on data modeling and further

[R] unexpected result in function valuation

Dear all, I have a very small script to plot a function. Here it is: ## sinca - function(N,th) { return(sin((N+0.5)*th)/sin(0.5*th)) } plot_sinca - function(N) { x - seq(-5*pi,5*pi,by=pi/100) y - rep(0,length=length(x)) for (i in 1:length(x))y[i] -

[R] help with vector construction

Hi all, I want to make a vector with the third column of a matrix, but only for the 2+3n rows of the matrix, with n being an entire number from 0 to a million. How can I do that in an easy way? Thanks in advance, Juan Pablo [[alternative HTML version deleted]]

Re: [R] probabilty plot

Hi Zeng, I just glanced at the link, but I think this is what you are after: x=rnorm(1000)#1000 random samples from N(0,1) y=rlnorm(1000)#1000 random samples from Lognormal(0,1) fx=ecdf(x)#Empirical cumulative density function of x fy=ecdf(y)#Empirical cumulative density function of y

[R] test of CA axis

Dear All, I am not a statistician, and was wondering if anyone could help me with the following. Greenacre, in his Correspondence Analysis in Practice (1993, p.173) gives a method for testing the significance of an axis in CA where: $\chi^2 = \lambda \times n$ where \lambda is the the

Re: [R] help with vector construction

Hi, Example: n - 1:10 mat[2+3*n,3] #Where mat is the matrix Is what you want? -- Henrique Dallazuanna Curitiba-Paraná-Brasil 25° 25' 40 S 49° 16' 22 O On 05/07/07, Juan Pablo Fededa [EMAIL PROTECTED] wrote: Hi all, I want to make a vector with the third column of a matrix, but only for

[R] R Logging Package

Does anyone know how to print out the current function name and line number (similar to how warning(call.=TRUE) operates). I'd like this for a logging package I'm working on, but I can't seem to find a way. Thanks for your help, John Scillieri This e-mail and any attachments are confidential,

Re: [R] Adding points to a wireframe with conditioning variable

On 7/5/07, Mark Lyman [EMAIL PROTECTED] wrote: I would like to add points to a wireframe but with a conditioning variable. I found a solution for this without a conditioning variable here, http://finzi.psych.upenn.edu/R/Rhelp02a/archive/65321.html. Does anyone know how to plot a wireframe

Re: [R] help with vector construction

Or an alternative to Henrique's if you want to select all the rows from row 2 up to the 3*n row this may work. n - 2 myvector - data1[2:(2*n), 3] --- Juan Pablo Fededa [EMAIL PROTECTED] wrote: Hi all, I want to make a vector with the third column of a matrix, but only for the 2+3n

[R] (no subject)

I'm trying to hunt down an appropriate kriging package for my specific application, and I was hoping someone on the R list might have some pointers -- I'm interested in performing kriging and related spatial interpolations with one of the R packages, but I need to be able to provide my own

[R] Kriging with precalculated point-to-point distances?

I'm trying to hunt down an appropriate kriging package for my specific application, and I was hoping someone on the R list might have some pointers -- I'm interested in performing kriging and related spatial interpolations with one of the R packages, but I need to be able to provide my own

Re: [R] sink() and source()

On 7/5/2007 11:35 AM, elyakhlifi mustapha wrote: hello, I have a problem running a R script actually I'm using source() and sink() and it doesn't work source(T:/agents/melyakhlifi/R/essai_rep.r) to execute a file and the file contain sink(T:/agents/melyakhlifi/R/sortie.html)

Re: [R] Adding points to a wireframe with conditioning variable

Deepayan Sarkar deepayan.sarkar at gmail.com writes: On 7/5/07, Mark Lyman mark.lyman at gmail.com wrote: I would like to add points to a wireframe but with a conditioning variable. I found a solution for this without a conditioning variable here,

Re: [R] unexpected result in function valuation

Very simple; it is your function. You need to step through and see that you are evaluating close to zero: x[701] [1] 6.283185 sin((4.5*x[701])) [1] -1.666142e-14 sin(.5*x[701]) [1] -1.653896e-15 sin((4.5*x[701]))/sin(.5*x[701]) [1] 10.07404 With numbers that small you might be losing

Re: [R] unexpected result in function valuation

What value should your formula give when x is a multiple of 2*pi? You seem to believe 9 is correct but in fact NaN is. Element 701 of x is approximately but not exactly 2*pi: on my system it is about 7*.Machine$double.eps different. You cannot expect sin(N*pi) to be exactly zero for N != 0.

Re: [R] pgup/pgdown in R Graphics Window under Linux

On Thu, 5 Jul 2007, Paul Matthias Diderichsen wrote: Dear S-users. This is the help forum for R users This should be an easy one: How do I change pages on an X11 graphics device under linux? I thought that the page-up/page-down keys were supposed to do the trick, It is baffling,

Re: [R] unexpected result in function valuation

True. I've corrected my function in this way: ### sinca - function(N,th) { mod_th - th%%(2*pi) if (mod_th == 0) { ff - 2*N+1 } else { ff - sin((N+0.5)*th)/sin(0.5*th) } return(ff) } ### The function is equal to

[R] Me again, about the horrible documentation of tcltk

How on Earth can I know what are the arguments of any of the functions of the tcl/tk package? I tried hard to find, using all search engines available, looking deep into keywords of R, python's tkinter and tcl/tk, but nowhere I found anything remotely similar to a help. For example, what are

Re: [R] help with vector construction

One approach is to use the fact that vectors are automatically replicated to the correct length when subscripting, so you can do something like: my.matrix[ c(FALSE,TRUE,FALSE), 3 ] To get every 3rd element starting at the 2nd element, and the 3rd column. Hope this helps, -- Gregory (Greg)

Re: [R] unexpected result in function valuation

see FAQ 7.31 and read What Scientists should know about floating point numbers On 7/5/07, James Foadi [EMAIL PROTECTED] wrote: True. I've corrected my function in this way: ### sinca - function(N,th) { mod_th - th%%(2*pi) if (mod_th == 0) { ff -

Re: [R] Me again, about the horrible documentation of tcltk

Alberto Monteiro [EMAIL PROTECTED] wrote: How on Earth can I know what are the arguments of any of the functions of the tcl/tk package? [...] My impression is that you as supposed to look in tck/tk manuals. For example, Googling on tk tck getopenfile pointed to this Web page:

Re: [R] unexpected result in function valuation

The problem is that you are dividing two numbers that are both very small. Any small imprecision in the denominator creates a big error. Here you can re-write your function using a trig identity to get accurate results: sinca - function(N,th) { #return(sin((N+0.5)* th)/sin(0.5*th)) return(

Re: [R] Me again, about the horrible documentation of tcltk

Alberto Monteiro wrote: How on Earth can I know what are the arguments of any of the functions of the tcl/tk package? I tried hard to find, using all search engines available, looking deep into keywords of R, python's tkinter and tcl/tk, but nowhere I found anything remotely similar to a

Re: [R] Me again, about the horrible documentation of tcltk

Hi Alberto, It took me approximately 20 seconds to find all the arguments for this function. Here were the steps I took. 1.) Look at R help page ?tkgetOpenFile 2.) Hmmm. Lots of functions, but little info. But wait, what's this? Details: [snip] There are far too many of these

[R] Question on Rmpi looping

Dear R list, In the course of learning to work with Rmpi, we are confused about a few points. The following simple program is based on some examples we retrieved from the web. Each slave is writing the same output line multiple times (a multiple equal to the number of slaves). In other words,

Re: [R] Me again, about the horrible documentation of tcltk

James MacDonald wrote: 3.) Type tkgetOpenFile at R prompt. tkgetOpenFile function (...) tcl(tk_getOpenFile, ...) environment: namespace:tcltk 4.) Google tk_getOpenFile. 5.) http://www.tcl.tk/man/tcl8.5/TkCmd/getOpenFile.htm Thanks, you (all who helped) are so nice. I even

Re: [R] Problem/bug with smooth.spline and all.knots=T

H == Hubertus [EMAIL PROTECTED] on Wed, 4 Jul 2007 14:58:44 +0200 writes: H Dear list, H if I do H smooth.spline(tmpSec, tmpT, all.knots=T) H with the attached data, Thanks for providing the data via URL (see below) H with the attached data, I get this error-message:

[R] generating lower triangular matrix

Hi, I would like to generate below triangular matrix for some a. 0 0 0 0 0 0 1 0 0 0 0 0 a 1 0 0 0 0 a^2 a 1 0 0 0 a^3 a^2 a 1 0 0 a^4 a^3 a^2 a 1 0 What's an efficient way to do this? (this matrix being KxK, K very large) Thanks Zava

Re: [R] Me again, about the horrible documentation of tcltk

On 05/07/2007 4:38 PM, Peter Dalgaard wrote: Alberto Monteiro wrote: How on Earth can I know what are the arguments of any of the functions of the tcl/tk package? I tried hard to find, using all search engines available, looking deep into keywords of R, python's tkinter and tcl/tk, but

Re: [R] pgup/pgdown in R Graphics Window under Linux

On 7/5/07, Paul Matthias Diderichsen [EMAIL PROTECTED] wrote: Dear S-users. This should be an easy one: How do I change pages on an X11 graphics device under linux? I thought that the page-up/page-down keys were supposed to do the trick, but the frame (window) seems to be kind of immune to

[R] problem assigning to indexed data frame element

Hi All, Sorry if I ask an obvious thing, I am still new to R ... I created a data frame of given dimensions to which I gave strings as column names. I want to write to elements of the data frame by indexing them with the row number and column name (string). The problem is that I can read

[R] row index

Dear Friends, Suppose I have a vector as follows RI Value 1 10 2 11 3 8 4 4 6 12 I would like a function which returns therow index number for the minimum value of VALUE. Can somebody please give me some direction on how I can do this. In effect I'm trying to find a

Re: [R] row index

?which.min x RI Value 1 110 2 211 3 3 8 4 4 4 5 612 which.min(x$Value) [1] 4 On 7/5/07, Anup Nandialath [EMAIL PROTECTED] wrote: Dear Friends, Suppose I have a vector as follows RI Value 1 10 2 11 3 8 4 4 6 12 I would like a

[R] Rmpi installation

Hi R Gurus. I'm trying to install the Rmpi package. Here are the errors: checking for stdint.h... yes checking for unistd.h... yes checking mpi.h usability... no checking mpi.h presence... no checking for mpi.h... no Try to find libmpi or libmpich ... checking for main in -lmpi... no libmpi not

Re: [R] The R Book by M. J. Crawley

Have you seen The Basics of S Plus, by Krause and Olson? It's really good too . On 7/5/07, Mike Prager [EMAIL PROTECTED] wrote: Pietrzykowski, Matthew (GE, Research) [EMAIL PROTECTED] wrote: Hello all- I would appreciate any guidance that can be provided. I am new to R and am using it

[R] ?replace characters within vector data

Hi List, I want replace characters within a vector. Outside R I could use sed, but I'd like to automate it in R. For example vectorx xxxyyz xxxyyza xxxyyzzb I want to change to: vectorx aaayyz aaayyza aaayyzzb The obvious replace command only deals with whole data entries? Any hints would

Re: [R] ?replace characters within vector data

On Fri, 2007-07-06 at 12:40 +1000, [EMAIL PROTECTED] wrote: Hi List, I want replace characters within a vector. Outside R I could use sed, but I'd like to automate it in R. For example vectorx xxxyyz xxxyyza xxxyyzzb I want to change to: vectorx aaayyz aaayyza aaayyzzb The

Re: [R] Rmpi installation

On 5 July 2007 at 20:19, Edna Bell wrote: | Hi R Gurus. | | I'm trying to install the Rmpi package. | | Here are the errors: | checking for stdint.h... yes | checking for unistd.h... yes | checking mpi.h usability... no | checking mpi.h presence... no | checking for mpi.h... no | Try to find

Re: [R] ?replace characters within vector data

Check out ?chartr On 7/5/07, [EMAIL PROTECTED] [EMAIL PROTECTED] wrote: Hi List, I want replace characters within a vector. Outside R I could use sed, but I'd like to automate it in R. For example vectorx xxxyyz xxxyyza xxxyyzzb I want to change to: vectorx aaayyz aaayyza

Re: [R] ?replace characters within vector data

sub(xxx, aaa, vectorx) or maybe gsub, depending on your application. Cheers, Simon. On Fri, 2007-07-06 at 12:40 +1000, [EMAIL PROTECTED] wrote: Hi List, I want replace characters within a vector. Outside R I could use sed, but I'd like to automate it in R. For example vectorx xxxyyz