How to do af::replace based on col_index?

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Joe Chan

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Apr 22, 2022, 2:28:04 AMApr 22
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Assume I have an array "a" with dim4 = h, w, c, 1
I want to assign blue color when column index is smaller than w/2
something like below

array out = af::replace(a, a.col < w/2, (255,0,0));

But how?

Umar Arshad

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May 12, 2022, 2:03:28 PMMay 12
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Try:
Assuming RGB:

a(seq(w/2), span, 2) = 255:
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