aparler/RosettaCodeData
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Initial data commit

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Ingy döt Net 2023-07-01 11:58:00 -04:00
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Task/Bitmap/J/bitmap-3.j Normal file
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pixellist=: ,"0/~ i. 10 NB. row and column indices for 10 by 10 block of pixels
NB. create 10 by 10 block of magenta pixels in the middle of a 300 by 300 green image
myimg=: ((145 + pixellist) ; 255 0 255) setPixels 0 255 0 makeRGB 300 300
NB. get pixel color for 10x10 block offset from magenta block
subimg=: (140 + pixellist) getPixels myimg