similar to: How to read .bmp files into R? read.pnm throws error

Hi all, I would like to 1. Read in an arcmap image into R (I can export pretty much any type of image jpeg, bitmap etc from arcmap) 2. Use R to create a nice colour legend in the plot First of all, Is this possible? So far I'm stuck on point 1. I have tried read.pnm() from pixmap and read.jpeg() from rgl. the pnm example provided works fine x <-

I realize that this question has been asked before (2003); From: Yi-Xiong Zhou Date: Sat 22 Nov 2003 - 10:57:35 EST but I am hoping that the answer has changed. Namely, I would rather read the BMP (or TIFF) files directly instead of putting them though a separate utility for conversion as suggested by, From: Prof Brian Ripley Date: Sat 22 Nov 2003 - 15:23:33 EST "Even easier is

In R-beta (Masked Marvel), when I do the example from the read.pnm help file, this is what happens: x <- read.pnm(system.file("pictures/logo.pgm",package="pixmap")[1]) Warning message: In rep(cellres, length=2): x is NULL so the result will be NULL In R-2.15.3, it's all right. Thanks, Erin Erin M. Hodgess, Ph.D. Associate Professor Department of Computer and

Hi, all, I am having trouble getting R to take pnm images via mogrify i.e. mogrify -resize 320x217 -format pnm *.png However R via pixmap says that it can't read the file. If you have any ideas like a package that can read jpeg files, etc., I would appreciate it. Best wishes, Art Roberts University of Washington

Hi, I don't obtain to use try to capture an error of read.pnm(). I was using: res <- try(read.pnm(file_name)) But I don't understand that the variable res represents, or eiher, as I can access its attrbites. Tks, Francisco. ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Francisco J?nior, Computer Science - UFPE-Brazil "One life has more value that the world whole"

Hi! I'm Turbo24prg and want to ask you, if I can use the code in SYSLINUX that display an PNM-File on the screen. I'm writting an open-source OS, named InfiniT OS and want to use this code in it. Thanks in advance. thx & cu Turbo24prg ->> Have you written it, or have you implemented out of an other source, and if it is so can you send me the source, please?

Dear R People: I am trying to replicate a cool example that I saw on the R-bloggers some time ago by kafka399. Here are the lines tI think may be causing the trouble: gray_file <- read.pnm(path) pos[i,] <- c(gray_file@grey) The warning error that I get is "In rep(cellres, length=2): x is NULL so the result will be NULL Any suggestions would be much appreciated. Thanks,

"white" is supposed to be the default background for BMPs (according to ?bmp) but it doesn't work > bmp("test.bmp", bg="white") > plot(0) > dev.off() # results in grey background # This seems to be a good enough workaround for now. > bmp("test.bmp") > par(bg="white") > plot(0) > dev.off() # background is white

Hi! After unziping the CRAN file e1071.zip on my Win95 library directory, I start R and type >library(e1071) After that, help commands of the e1071 functions work (i.e., help(read.pnm), BUT some functions themselves are not available: > read.pnm Error: Object "read.pnm" not found I've looked at the file library/R/e1071 with an ascii editor and it seems like the functions

Hi, I'm having trouble writing .pnm images which I think is due to a problem with my colour space. The pixmap object seems to be looking for 72 of 8 colours (one per cell?) which doesn't seem healthy... > library(pixmap) > x <- pixmapIndexed(rep(1:8, 9), nrow=6, col=rainbow(8)) > x Pixmap image Type : pixmapIndexed Size : 6x12 Resolution : 1x1

Hi R users, I already had post this question under the title of bmp header, there was a mistake in my post. The following is the same post without the mistake. Thanks Rostam I have a xml file. A value of one of the nodes of the xml file is a bmp image encoded in base64. I would like to read this image by R. I think I should do the following steps: 1. Decoding it from base64 to binary. 2.

Hi, I am trying to use "read.pnm" from the package "pixmap" to read more than 10 thousand image files in "mydir". > file.list <- dir( "mydir", full=T) > for( i in 1:length(file.list) ) { print(i) x <- read.pnm(file.list[i]) } In the beginning it was fine. But after reading 1020 images or so, the read.pnm function seems to crash on

Hi, my name is Ellen. I want to ask you about R Code. I got a code for extracting a pixel value, but I can't compile it..  It is said "Error in is.data.frame(x) : object 'lena' not found" Here is the original full code: library(pixmap) lena <- read.pnm("oldlennablur.pgm") write.table(lena@grey,"mylenna", quote=FALSE, row.names = FALSE, col.names=

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people, I'm using the pixmap library and method read.pnm() for to read figures and it's giving the following error: Error in substr(inpstr, com1, stop = ns) : evaluation is nested too deeply: infinite recursion? I think that to be because of its size. Am I correct? Tks, Francisco. ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Francisco Júnior, Computer Science - UFPE-Brazil "One

Hi , I am using syslinux-2.04. I used the isolinux boot loader, to create a customized boot cd. As an add on to that process, i thought of displaying the product logo in the bootup screen. So as the document suggested i went on to create the lss from png. But it failed with following message. $ ~archives/syslinux-2.04/ppmtolss16 < ipm-white.pnm > ipm-white.lss './ppmtolss16:

Does someone here know of a way to display images in R that isn't slow? Here are the things I've tried so far: library(rimage) i<-read.jpeg('foo.jpg') plot(i) # very slow library(pixmap) i <- read.pnm('foo.pnm') plot(i) # also slow chans <- getChannels(i) image(chans[,,1]) # this is slow too I also tried using library(cairoDevice) but it only makes everything

I am having trouble running the 'read.pnm' examples in this package. Can anyone tell me what is wrong? I am using the current package and running Redhat 7.2 (intel). The other examples seem fine but I can't seem to pull in files. [root at KENNY root]# R R : Copyright 2001, The R Development Core Team Version 1.3.0 (2001-06-22) R is free software and comes with ABSOLUTELY NO

Hi! using ppmtolss16 tool from syslinux-2.04 with an input .pnm file created with gimp 1.2.3, I bumbed into the following error: [root at azur syslinux-2.04]# ./ppmtolss16 < /home/sr/try.pnm > /tmp/t ./ppmtolss16: Input format error 1 [root at azur syslinux-2.04]# The problem is that gimp adds the comment # CREATOR: The GIMP's PNM Filter Version 1.0 at 2nd line. Suggested fix for

Maybe open.connection() should also check if the connection is already open and given an error or at least a warning if it is. Suggested code update: open.connection <- function(con, open="r", blocking=TRUE, ...) { if (!inherits(con, "connection")) stop("argument is not a connection") if (isOpen(con)) # NEW