I have investigated some of the links to known microarray databases, such as arrayTrack, omnibus (NCBI), TCGA. I find that when trying to get microarray images I either get an exotic file format (such as .sdf or .cel) or text base information. Does anybody know of publicly available microarray images (preferable with metadata too) in .svg, .png, .jpg or another well known image file format?
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Microarray images (at least for Illumina arrays) will come in .tiff format and are huge compared to the summarized formats (.sdf/.cel). Most places will not archive the raw images (so you won't find them online) and even when you run the microarray, you will often times need to make a special request to output raw images. iirc .jpg images are useless due to compression artifacts.
You can use the proper bioconductor libraries to extract data from the 'exotic' file formats. There are many bioconductor workshops archived online that will go through the steps of microarray analysis.
http://www.bioconductor.org/packages/release/bioc/html/affy.html
http://www.bioconductor.org/packages/release/bioc/html/beadarray.html
http://master.bioconductor.org/help/course-materials/2007/BioC2007/labs/oligo/BioC2007-oligo.pdf
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$\begingroup$ sad that its not possible to get raw pictures .. $\endgroup$ Aug 7, 2015 at 21:21
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$\begingroup$ @hotGopher You might to directly contact the authors but that's a pain and it takes time. $\endgroup$– Remi.bAug 7, 2015 at 23:01
microarrayon GoogleImages, you'll get many pictures of these dots of colours on a black background. Is it what you're looking for? $\endgroup$