similar to: Execute R with *.RData argument

Dear R users, i would like to apply a PCA on image data for data reduction. The image data is available as three matrices for the RGB values. At the moment i use x <- data.frame(R,G,B)#convert image data to data frame pca<-princomp(x,retx = TRUE) This is working so far. >From this results then i want to create a new matrix from the first (second..) principal component. Here i stuck.

Hello, I need to do some basic statistics on raster images (tiff or png). I need only an advice where to start, which package is the most appropriate. My search attempts were without success, yet. Many thanks Tomas

What software exists for digitizing video to quantify the motion of specific features in the image? I might be willing to use something that's NOT in R, though I'd prefer something in R (or at least with an R intereface). Thanks, Spencer Graves

Dear All, I want to change file names. I have file0.1_data.RData (I have several files whose names are file0.x_data.Rdata) I want to rename it to file1_data.RData How can I do it? Thank you for saving my time! [[alternative HTML version deleted]]

I've just had an interesting thing happen to one of our students. He's using R 1.9.1 on Linux, and so I dont expect bugfixes, I'm just reporting this out of interest in case anyone else has had this happen. Starting R caused a seg fault shortly after "[Previously saved workspace restored]". Running "R --no-restore-data" worked fine so I suspected a corrupted

I've just had an interesting thing happen to one of our students. He's using R 1.9.1 on Linux, and so I dont expect bugfixes, I'm just reporting this out of interest in case anyone else has had this happen. Starting R caused a seg fault shortly after "[Previously saved workspace restored]". Running "R --no-restore-data" worked fine so I suspected a corrupted

Saving Rdata files in a zip archive form can in some cases save a considerable amount of disk space. R has the zip.file.extract function to extract files from zip archives, but appears not to have any corresponding function to save in zipped form. (At least I have not been able to find anything in the help files or through searching the mail archives.) The system function can be used to call gzip

Hi all, After a short hiatus away from R I have found that it's changed a bit. I used to keep a definition of .First in .Rprofile that did a couple of things on startup (load a couple of libraries). Now, I've discovered that when I change the definition of .First in .Rprofile it doesn't change anything when I start up, because .First is held over in .Rdata from the last session.

Dear all, I have a version 1.3.1 of R which is under Linux Redhat. I have worked with it without any problem. But now when I try to run R, I get the error message as follows : Error: an xdr real data read error occured Fatal error: unable to restore saved data in .RData Thank you in advance and sorry if my question is perhaps simple. Aboubakar Maitournam.

Colleagues: I am having trouble loading data from within .Rdata file within the environment of a function. That is, the following always loads to the global environment: f1 <- function() { load("mydata.Rdata") # compute with objects from mydata.Rdata. } I wish to load mydata.Rdata only within the function f1. Perhaps I have misunderstood

Somehow I have lost the correct file association for .RData files. They are now associated with a text file editor. When I right click on any .RData file and try to change the association, R is not listed as a choice of program. I browse to c:\Program Files\R\rw2001\bin\Rgui.exe and select that file to open .RData, but Windows does not then place Rgui.exe in the list of programs to use. I can

Dear All, I suspect this is kind of dumb, but when I was under the thrall of the dark lord (read, using a W2K box), all my work in R files came out as foo.RData. I moved on to GNU/Linux, and all the old .RData files keep on working as they used. No problems in loading and stuff. But I use R from the terminal. Assuming I decide to switch to emacs, do I need to save my work as foo.r? what about my

Hi, I noticed a Rdata size issue that's puzzling to me. Attached find 2 example datasets in text file. Both are 100x5, so the sizes for both text file are the same. However, when I read them into R, the sizes are much different: tt<-as.matrix(read.table("tt.txt",header=T,row.names=1)) save(tt,file='tt.RData')

I got two .RData file e.g data.2005.RData & data.2006.RData I would like to combine these two different data set and make single RData file. in both file there are some NULL files are also available and I would like to clear this NULL files also. $ : NULL $ : NULL $ : num [1:43285, 1:8] -21.1 -21.1 -24.9 -24.9 -24.9 ... ..- attr(*, "dimnames")=List of 2 .. ..$ : NULL ..

Hi, I have been using R under Windows but have started to use R (ver. 2.3.0,) under Linux (linux-gnu). I have been saving my workspace and I notice that I sometimes end up with 2 version of the .RData file: .RData and .Rdata. Can someone explain what is happening? I am not sure which one is loaded so I have ended up losing data by deleting the wrong file. I think the saved file should be

Somehow, I've managed to have my .Rdata files become `disassociated' from the R program. I am running Windows XP Pro. I have re-installed R 2.4 in an attempt to have it re-associate itself with .Rdata files, but to no avail. .Rdata files are now associated with a file compression program or alternatively with Rgui.exe. .Rdata files are represented by the blue R, but double-clicking on

Hi, I have problem with the restore function in some .RData using R 1.9.0 Look the error: [ronaldo at zeus RAnalise]$ R ... Error: object 'family' not found whilst loading namespace 'MASS' Fatal error: unable to restore saved data in .RData But if I load this .RData with the load() function all objects are recovered. [ronaldo at zeus RAnalise]$ R --no-restore-data ... > ls()

We are using R in our class. One student claims to be receiving the message "Fatal error: unable to restore saved data in .RData" The student is working in a Windows environment with Vista using the precompiled binary distribution (R-2.7.2). After searching the R site and reading FAQs, I suggested the student find .RData in the working directory and delete it. The student claims this

Dear all I am beginner in R coding and have a problem to figure out how to convert RData format into R format. After I converted csv file using read.csv I got RData file but to run some R code need R format Many Thanks Dejan [[alternative HTML version deleted]]

hello all, will you plz tell me how can i convert RData files to txt,,,