Re: [R] Making TIFF images with rtiff

From: Inman, Brant A. M.D. [mailto:[EMAIL PROTECTED] Many medical journals and publishers require that images, whether photographs or line art, be submitted as high resolution .TIFF images. One option for R users is to produce an image in one format and to convert it to a .TIFF file using a

Re: [R] Image Processing packages

Nice. May I incorporate these into the collection I am packaging up for redistribution? -Eric -Original Message- From: Vincent Zoonekynd [mailto:[EMAIL PROTECTED] Sent: Mon 1/30/2006 6:48 PM To: R-help@stat.math.ethz.ch Cc: [EMAIL PROTECTED]; Kort, Eric; [EMAIL PROTECTED]; Thomas

Re: [R] Image Processing packages

Charles Annis, P.E. writes... Eric: I use R to quantify the efficacy of ultrasonic inspections of metal components (e.g. looking for nonmetallic inclusions in forgings) and use R for image processing, but my methods have been rather a kluge. I am interested in your R functions, if you will

Re: [R] Image Processing packages

From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Hi, Is it possible that I could see some of your functions and/or results of those functions(Eric, Charles, Stephan). It's more about that I'd like to see what already has been accomplished and the way that was chosen thus circumventing

Re: [R] Image Processing packages

Thomas Kaliwe wrote: Hi, I've been looking for Image Processing packages. Thresholding, Edge Filters, Dct, Segmentation, Restoration. I'm aware, that Octave, Matlab etc. would be a good address but then I'm missing the statistical power of R. Does anybody know of packages, projects etc.

Re: [R] Suggestion for big files [was: Re: A comment about R:]

-Original Message- [ronggui] R's week when handling large data file. I has a data file : 807 vars, 118519 obs.and its CVS format. Stata can read it in in 2 minus,but In my PC,R almost can not handle. my pc's cpu 1.7G ;RAM 512M. Just (another) thought. I used to use SPSS,

Re: [R] removal of an element from a vector

Gynmeerut asks... Dear All, I have some problem in R which I'm explaining using an example: x-(120,235,172,95,175,200,233,142) i want to remove the elements which are lesser than 100 and as a result i want two vectors y-(containing elements 100) z-(remaining elements)

Re: [R] Why doesn't this nested loop work?

Teresa Nelson Hi there, I can get the for-loop to work, I can get the while loop to work. But I can't get a for loop to work nested within the while loop - why? Please help, Teresa It actually does work, but I think the problem is with your matrix indexing. See the sample

Re: [R] How to produce this graphic

Lisa Wang asks... Subject: [R] How to produce this graphic Hello there, I would like to produce a plot of x-c(4,5,6),which is the mean of each group and y-c('groupA','groupB','groupC'). plot (x,y) can not produce any graphics because y is not numerical. What should I do to produce

Re: [R] A comment about R:

Berton Gunter writes U I cannot say how easy or hard R is to learn, but in response to the UCLA commentary: However, I feel like R is not so much of a statistical package as much as it is a statistical programming environment that has many new and cutting edge

Re: [R] A comment about R:

Kjetil Halvorsen wrote... Readers of this list might be interested in the following commenta about R. In a recent report, by Michael N. Mitchell http://www.ats.ucla.edu/stat/technicalreports/ says about R: Perhaps the most notable exception to this discussion is R, a language for statistical

Re: [R] Repeating functions

Ronnie Babigumira said... Hi, I have a number of spatial weight files and using Roger Bivand's spdep, I would like to 1. Convert them into neighbor lists using 2. Convert the neighbor lists into spatial weights For a given file, the syntax would be mygal_nb1 - read.gal(mygalfile1, override.id

Re: [R] Segmetation Fault in R

Marcelo Damasceno wrote... Hi all, I has a C code in Linux, it has 7 pointers and compile e run OK, but when I run in R happens Segmetation Fault. When I use calloc function, it returns NULL. What's wrong? I would like more information about R-alloc function? Thanks! What is wrong is that

Re: [R] segmetation fault

Elizabeth Lawson Wrote: Hey, I don;t know if anyone has come across this error before... More times than I care to remember. I am running R on the terminal of my MAC OS X 10.3.4 and I have written C code and compiled it using R CMD SHLIB mycode.c There were no problems in

[R] Two problems compiling my shared library...

Since requests keep trickling in, I have finally gotten around to polishing my rtiff package for R. This package will read TIFF images into a pixmap for subsequent processing. However, I am encountering a couple problems with compiling the shared library. 1. On windows (R 2.2.0): R CMD INSTALL

RE: [R] Absolute ceiling on R's memory usage = 4 gigabytes?

-Original Message- From: Tae-Hoon Chung [mailto:[EMAIL PROTECTED] Sent: Thu 7/1/2004 7:52 PM To: Kort, Eric Cc: [EMAIL PROTECTED] Subject: Re: [R] Absolute ceiling on R's memory usage = 4 gigabytes? Hi, Eric. It seems

RE: [R] Absolute ceiling on R's memory usage = 4 gigabytes?

to compile a 64 bit R somewhere sometime soon. Thanks, Eric -Original Message- From: Paul Gilbert [mailto:[EMAIL PROTECTED] Sent: Fri 7/2/2004 10:39 AM To: Kort, Eric Cc: Tae-Hoon Chung; [EMAIL PROTECTED] Subject: Re: [R] Absolute ceiling

[R] Absolute ceiling on R's memory usage = 4 gigabytes?

Hello. By way of background, I am running out of memory when attempting to normalize the data from 160 affymetrix microarrays using justRMA (from the affy package). This is despite making 6 gigabytes of swap space available on our sgi irix machine (which has 2 gigabytes of ram). I have seen

RE: [R] Absolute ceiling on R's memory usage = 4 gigabytes?

will recompile and try again. Thanks, Eric From: Kort, Eric Hello. By way of background, I am running out of memory when attempting to normalize the data from 160 affymetrix microarrays using justRMA (from the affy package). This is despite making 6 gigabytes of swap space available on our

RE: [R] Problems with Rcmd INSTALL on Win32

-Original Message- From: Uwe Ligges [mailto:[EMAIL PROTECTED] Sent: Tuesday, April 06, 2004 2:50 AM To: Kort, Eric Cc: [EMAIL PROTECTED] Subject: Re: [R] Problems with Rcmd INSTALL on Win32 Kort, Eric wrote: Hello. When I try to use Rcmd INSTALL to install a package (whether

[R] Problems with Rcmd INSTALL on Win32

Hello. When I try to use Rcmd INSTALL to install a package (whether my own or someone else's) for the Windows version of R, I get the following error: C:\Rcmd INSTALL cluster_1.8.1.tar.gz -- Making package cluster adding build stamp to DESCRIPTION Fatal error: you must

RE: [R] invoking R scripts from a linux shell ?

-Original Message- From: Enrico Curiotto [mailto:[EMAIL PROTECTED] Hello, I have written perl programs that extract data from a text file, process them, and create other text files, which I'd like to apply some statistics too (for example with R). I'd like to do it all in once

RE: [R] Wrote new tiff package, would like big-endian tiffs for testing

-Original Message- From: Hisaji Ono [mailto:[EMAIL PROTECTED] Hi. Do you know RGDAL(http://rgdal.sourceforge.net/) which can read Tiff files? Yes. Thanks for mentioning this excellent alternative. This may be a fine solution for some/many/most/nearly all people. However,

RE: [R] extract data from a data.frame

-Original Message- From: Ian Garcia [mailto:[EMAIL PROTECTED] Hi, I'm reading part of a table from postgres, so I'm getting a data frame. how can I extract the numerica values so I can operate on them. res - dbGetResult(mydata) str(res) `data.frame': 5 obs. of 8

[R] Wrote new tiff package, would like big-endian tiffs for testing

Over the years I have noted a couple of people interested in an R package that will read tiff files. There were some valid arguments against (e.g. R is not an image editting suite, libtiff does not support all tiff files, etc.). True enough, when I want to work with family photos, I use Gimp.