Unable to get the desired result through image sampler

Namaste all,
I want to create a screen similar to that of the attached image. I am unable to get the desired pattern as that of the image used in the image sampler. Kindly guide.

Thanks.

SCREEN 1.3dm (8.4 MB)
SCREEN 1.gh (377.0 KB)

here is a possible solution:


SCREEN 1_inno.gh (383.1 KB)

I take the explanation from a very recent thread with a similar situation:

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Thanks for the help. :smiley: