Wolfgang Huber wrote: > 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.
It is probably easier to port ImageMagick to MinGW than to try to link mingw-compiled EBImage against MSVC++ compiled imagemagick. (Imagemagick does run under cygwin, I believe, so it is not entirely hostile to gcc on windows). HTL > > 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 >>>> > > ______________________________________________ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel
