First is there a limit in size to emails send to the forum?
Here's a shortened message that I hope will get delivered.
If this image is a clock face, in an hour the grayscale image goes from
white to black correctly.
If you use the RGB palette that is not the case.
load 'plot'
at2=: 13 :'([:{:"1 *.) j./"1 y'
RGB=: 255* #:i.8
GRB=:1 0 2{"1 RGB
we=: 13 :'<.0++/"1[0.3 0.59 0.11*"1 y'
gray=: 13 :'3#"0 we y'
GRB viewmat (D=.at2"0 /~ i:500)
(gray GRB) viewmat (D=.at2"0 /~ i:500)
Linda
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