Reading JPG files within R
On Thu, 6 Nov 2003, Paolo Sirabella wrote:
Dear R-listers, I am an enthusiastic new to R and have the following simple (. I hope .) problem: I am searching a function that allows to import jpg files as matrices (n x m x 3) i.e. n_pixels x m_pixels x 3_colors. I have seen the pixmap library, but it seems able only to read BMP pictures (and not all them .).
I don't think your question was answered straight away, and maybe you have found a solution yourself. Typically, you can convert your JPG to the format handled by the pixmap package, PPM, in a graphics utility such as ImageMagick on Windows or Unix/Linux, and then use pixmap, which gives you an array in its pixmapRGB form.
Can someone give me some suggestions ? Thank you in advance. ========================================= Paolo Sirabella University of Rome "La Sapienza" - Rome - Italy Dept. of Human Physiology and Pharmacology Biophysiscs Group ========================================= [[alternative HTML version deleted]]
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