Hi, I do not know of any free TIFF readers for R, so I suggest that you use an external TIFF-to-Portable Pixmap coverter and then use the pixmap package available on CRAN. I recommend ImageMagick's convert program available for Unix, Linux, Windows, Windows/Cygwin etc at http://www.imagemagick.org/.
(If you have one already installed, be careful not to work with an old version; I ran into a problem convert 16-bits TIFF with a 2 years old convert and it made it only into 8-bit images without warnings. That should not be a problem now.) The Portable Pixmap format includes i) RGB images (PPM), gray scale images (PGM) and monochrome images (PBM). In your case (I assume) you're working with 16-bits grayscale TIFF images so you should convert to PGM. If you have your PATH setup correctly an example would then be: > library(pixmap) > system("convert foo.tiff foo.pgm") > img <- read.pnm("foo.pgm") and then work from there. Hope this helps... Henrik Bengtsson Dept. of Mathematical Statistics @ Centre for Mathematical Sciences Lund Institute of Technology/Lund University, Sweden (Sweden +1h UTC, Melbourne +11 UTC, Calif. -8h UTC) +46 708 909208 (cell), +46 46 320 820 (home), +1 (508) 464 6644 (global fax), +46 46 2229611 (off), +46 46 2224623 (dept. fax) h b @ m a t h s . l t h . s e, http://www.maths.lth.se/~hb/ > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of > [EMAIL PROTECTED] > Sent: den 9 december 2003 15:16 > To: [EMAIL PROTECTED] > Subject: [R] Importing TIFF files into a R matrix > > > Hi > > I am facing a problem where I would like to import a TIFF > image (of spots on a nylon filter) into R (into a matrix for > example). When plotting the matrix using fx. scatterplot3d I > would then be able to see how the pixel-intensities are > distributed in "spot-areas" on the filter - which would be > very helpful. > > Does anynone know of a way to do this? > > Best regards, > > Peter Hagedorn > > ... > Peter Hagedorn > > Risų National Laboratory > Plant Research Department > Building PRD-330 > P.O. Box 49 > Frederiksborgvej 399 > DK-4000 Roskilde > Denmark > > Phone +45 4677 4293 > Fax +45 4677 4109 > e-mail [EMAIL PROTECTED] > web http://www.risoe.dk/pbk/staff_uk/phah.htm > > ______________________________________________ > [EMAIL PROTECTED] mailing list > https://www.stat.math.ethz.ch/mailma> n/listinfo/r-help > > ______________________________________________ [EMAIL PROTECTED] mailing list https://www.stat.math.ethz.ch/mailman/listinfo/r-help