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Logical Indexing with Condition Involving Functions

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Andrew Anderson
Andrew Anderson on 5 May 2021
Edited: Andrew Anderson on 5 May 2021
Suppose I created a function F, and I want to find all elements a in an array A such that F(a) is some value of the function. Is there any way to do this with logical indexing (or some other method)? I tried to use idx = (F(A) == 1), but it has been giving me error messages about different numbers of elements. Thanks in advance!
  2 Comments
Andrew Anderson
Andrew Anderson on 5 May 2021
"Unable to perform assignment because the left and right sides have a different number of elements."

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Answers (1)

VBBV
VBBV on 5 May 2021
%if true
idx = find(A(a) == 1)
Use it with find function for element indices
  2 Comments
Andrew Anderson
Andrew Anderson on 5 May 2021
This may suffice, as I do not have to use logical indexing (I will edit the question accordingly). I will try it out some time.

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