MATLAB: How to replace elements of a matrix position wise????

matrixmatrix manipulation

I have a matrix: A=[1 1 0 1; 1 0 1 1; 1 0 0 0; 0 1 0 1] now the elements of 3rd and 4th column i want to change every element as if its 1 than 0 or if its 0 than 1.

please please help me…..

Best Answer

A(:,3:4)=~A(:,3:4)

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MATLAB: Multiplying a 1xM vector by a KxN matrix

Use bsxfun, reshape, and permute:

>> V = [1,-1]
V =
     1    -1
>> S = [0,0,1,1; 1,1,0,0; 1,0,1,0; 0,1,0,1]
S =
     0     0     1     1
     1     1     0     0
     1     0     1     0
     0     1     0     1
>> X = bsxfun(@times,S,reshape(V,1,1,[]));
>> reshape(permute(X,[3,2,1]),[],size(S,1)).'
ans =
     0     0     0     0     1    -1     1    -1
     1    -1     1    -1     0     0     0     0
     1    -1     0     0     1    -1     0     0
     0     0     1    -1     0     0     1    -1

MATLAB: Take the array which is less than 3

A(A<3)

Best Answer

Related Solutions

MATLAB: Multiplying a 1xM vector by a KxN matrix

MATLAB: Take the array which is less than 3

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