Hi, I dont think you can import PNG images into R directly (although I may be wrong). I use ImageMagick (available for most operating systems) and the system() function to do my image conversions.
convertImage<-function(dirname,srcname,targetname){ strSrcName<-shQuote(paste(dirname,srcname,sep='/')) strTrgName<-shQuote(paste(dirname,targetname,sep='/')) filelist<-system(paste('ls',strSrcName,sep=' '),TRUE,TRUE) if(length(filelist)<1){ stop("Source Image Not Found") } filelist<-system(paste('ls',strTrgName,sep=' '),TRUE,TRUE) if(length(filelist)<1){ strcmd<-paste('convert',strSrcName,strTrgName,sep=' ') system(strcmd) } } On Mon, 2005-21-11 at 11:36 +0100, Sydler, Dominik wrote: > Hi there > > I'm looking for a function to read PNG-bitmap-images from a file into R. > I only found: > - the pixmap-package which cannot import png or similar formats > - the rimage-package which can only import lossy jpeg-images (the > convertion from png to jpeg modifies the data!) > > Is there any possibility to read PNG-files? > > Thanks for any help > Dominic Sydler > > ______________________________________________ > R-help@stat.math.ethz.ch mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html > ______________________________________________ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html