Henrik Bengtsson wrote: > Hi Wolfgang, > > thanks for this - I took a look the EBImage webpage > [http://www.ebi.ac.uk/~osklyar/projects/EBImage/] and it looks very > nice. Are there any plans for Windows support too? I am looking for > a cross-platform solution. > > Cheers
Hi Henrik, there are very strong intentions to also make this available as a Windows precompiled package and/or provide installation instruction for Windows. Until now however, in spite of some effort, we have failed. As I understand it, a problem seems to be different dll formats of MS Visual C++ (in which ImageMagick is provided) and MinGW. If anyone is interested in helping with this, they could have a look at the source package on Bioconductor, and contact us for details. Best wishes Wolfgang > On 7/21/06, Wolfgang Huber <[EMAIL PROTECTED]> wrote: >> >> Hi Henrik, >> this does not directly answer your question, but you might be able to >> use the function write.image in the package EBImage (Bioconductor) to >> write matrices into image files (e.g. PNG or JPEG), this might be more >> flexible and also faster than what you're trying to do. >> Best wishes >> Wolfgang >> ------------------------------------------------------------------ >> Wolfgang Huber EBI/EMBL Cambridge UK http://www.ebi.ac.uk/huber >> >> Henrik Bengtsson wrote: >> > Hi, >> > >> > I try to create PNG images of a certain size where each pixel >> > intensity corresponds to exactly one probe signal in an Affymetrix >> > array. I try to use png() and image() with zero margins to do this. >> > Example: >> > >> > z <- matrix(1:15, nrow=45, ncol=30) >> > png("large.png", height=nrow(z), width=ncol(z), bg="red") >> > par(mar=c(0,0,0,0)) >> > image(z, col=gray.colors(16), axes=FALSE) >> > dev.off() >> > >> > z <- matrix(1:15, nrow=5, ncol=3) >> > png("tiny.png", height=nrow(z), width=ncol(z), bg="red") >> > par(mar=c(0,0,0,0)) >> > image(z, col=gray.colors(16), axes=FALSE) >> > dev.off() >> > >> > The problem is that on WinXP the very bottom row and the very right >> > column of pixels in red. Trying on Linux, it is only the very right >> > column that is red. See attached images (you might have to zoom in to >> > see it). I try to do this in R v2.3.1. The same effect is seen if >> > the jpeg() device is used. >> > >> > When rescaling, the same effect is seen (the red border effect is one >> > pixel wide), e.g. >> > >> > z <- matrix(1:15, nrow=45, ncol=30) >> > png("large5.png", height=5*nrow(z), width=5*ncol(z), bg="red") >> > par(mar=c(0,0,0,0)) >> > image(z, col=gray.colors(16), axes=FALSE) >> > dev.off() >> > >> > I might be asking for something that is not supported, but is there a >> > way around this? It is a problem, because I wish to tile the images >> > in an HTML page. >> > >> > Thanks >> > >> > Henrik >> > >> -- ------------------------------------------------------------------ Wolfgang Huber EBI/EMBL Cambridge UK http://www.ebi.ac.uk/huber ______________________________________________ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel
