How do you set entries in a matrix for odd rows with odd columns to zero?

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L'O.G.
L'O.G. 2023-2-15
回答： Dyuman Joshi 2023-2-15
I want to set A(i,j) = 0 if both i and j are odd. Is this possible to do vectorially?

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Dyuman Joshi
Dyuman Joshi 2023-2-15
Ran in:
%random data for example
A = rand(6,7)
A = 6×7
0.5610 0.2871 0.6280 0.3569 0.2765 0.5197 0.9541 0.3110 0.6573 0.3447 0.8105 0.0255 0.8263 0.2238 0.1450 0.6944 0.2345 0.6517 0.8826 0.6646 0.2389 0.0189 0.9227 0.6658 0.1392 0.9954 0.4346 0.1812 0.2084 0.3130 0.1589 0.8685 0.6272 0.6153 0.3176 0.9900 0.3501 0.1301 0.0931 0.5342 0.8533 0.5644
A(1:2:end,1:2:end)=0
A = 6×7
0 0.2871 0 0.3569 0 0.5197 0 0.3110 0.6573 0.3447 0.8105 0.0255 0.8263 0.2238 0 0.6944 0 0.6517 0 0.6646 0 0.0189 0.9227 0.6658 0.1392 0.9954 0.4346 0.1812 0 0.3130 0 0.8685 0 0.6153 0 0.9900 0.3501 0.1301 0.0931 0.5342 0.8533 0.5644

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