linear index to matrix index

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yonatan s
yonatan s on 1 Feb 2018
Commented: Andrei Bobrov on 1 Feb 2018
ola,
I have a matrix 1020x1294, and the linear index 475000. I can do the math by myself, but I'd like to know is there a function that calculates what is the row&column of this index in the matrix?
thanks
  3 Comments
yonatan s
yonatan s on 1 Feb 2018
no reason. why does it matter?
Birdman
Birdman on 1 Feb 2018
Just wondered. It does not matter.

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Accepted Answer

Andrei Bobrov
Andrei Bobrov on 1 Feb 2018
ii = 475000;
m = size(A,1);
r = rem(ii,m);
c = ceil(ii/m);

More Answers (1)

Birdman
Birdman on 1 Feb 2018
Edited: Birdman on 1 Feb 2018
One approach:(use ind2sub)
A=randi([1 5],1020,1294);%demo data
[r,c]=ind2sub(size(A),475000)

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