MATLAB: Location of logical matrix

logical?MATLAB

Hi I have a 10 x 2 logical matrix and I would need to find out the location of the rows which both columns are ones i.e 1 1.

May I know how I may write for this? Thank you!

Best Answer

Since you have a logical matrix it’simply:

ix=all(matrix ,2); % logical indexing is efficient
  Wanted=find(ix)

Related Solutions

MATLAB: Get row no by which the other row is less

I am not certain what you are asking, since there appear to be two different requests.

Try this:

A{1,1} =  [1,0,1,1,1,0,1,1,0;  1,1,1,1,1,1,1,1,1];
AllColumnsLess = cellfun(@(x) all(x,2), A, 'UniformOutput',false)
AllCols = [AllColumnsLess{:}]
[FindRowsLessThan,FindColsLessThan] = cellfun(@find, A', 'UniformOutput',false)
FindRows = [FindRowsLessThan{:}]
FindCols = [FindColsLessThan{:}]

The ‘AllColumnsLess’ returns 1 if the condition is true for all elements in the vector (defined here as row vectors).

The find call returns the row and column indices for the non-zero elements in ‘A’. See the documentation for the find and all functions for details on how they work and what outputs they return.

MATLAB: How to generate random integer between two no (say 12 and 35) without repeat? randperm(n) give only 1 to n, but I need m to n.

idx = 12:35 ;
N = length(idx) ;
iwant = randsample(idx,N) ;

Best Answer

Related Solutions

MATLAB: Get row no by which the other row is less

MATLAB: How to generate random integer between two no (say 12 and 35) without repeat? randperm(n) give only 1 to n, but I need m to n.

Related Question