Extracting elements common to rows and columns in a matrix
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If I have a 5x6 matrix for example, how can I go about extracting elements common to the 3rd and 5th rows & the 4th and 5th columns?
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Accepted Answer
James Tursa
on 10 Nov 2020
Edited: James Tursa
on 10 Nov 2020
M = your matrix
result = M([3,5],4:5)
The [3,5] syntax is simply a vector with the indexes specified in any order. They don't have to be contiguous or increasing and can even repeat or decrease if you want.
The 4:5 syntax is a vector of contiguous indexes between the first number and the second number. E.g.,
4:5 is the same as [4,5]
2:6 is the same as [2,3,4,5,6]
etc.
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