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index in matrix using loop
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hi i have an matrix in my code that i want to do some calculation on each index in it so first of all i want to check if that index is greater then 0 then i multiply by area then store it in new varible calld fill
if not i multiple this index with area then store it in variable calld fill
how can i do it
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dpb
il 28 Apr 2019
I'd guess it mandatory to give an example or at least clarify because as written the result is the same for either case...
Risposte (1)
Kevin Phung
il 30 Apr 2019
m = [0.5 0.5; 0.25 0.5; -0.5 -0.5] % your sample matrix
f = m(m>0) * A + fill
c = m(m<0) *A + cut
^ this only return the values that meet the positive/neg criteria. If you want to keep the same dimensions then do this:
new_m = m; %copy
new_m(m>0) = m(m>0) * A + fill; %operate on positives
new_m(m<0) = m(m<0) * A - cut;
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