how to select certain elements from a matrix?
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A=[1,2,3,4], B=[90,0,40,0;0,0,10,60;55,15,0,10;0,15,5,0]
Hi everyone.. I want to select indexes of only one zero from each row and respective column. please help me in writing matlab code for this problem. Thanks in Advance
采纳的回答
David Sanchez
2014-6-11
B=[90,0,40,0;
0,0,10,60;
55,15,0,10;
0,15,5,0];
[col row]=find(B==0);
A= [row col] % coordinates of your zero-elements
A =
1 2
1 4
2 1
2 2
3 3
4 1
4 4
3 个评论
David Sanchez
2014-6-11
In you just want the coordinates of the first zero in each row:
B=[90,0,40,0;
0,0,10,60;
55,15,0,10;
0,15,5,0];
First_zero_coordinates = zeros(size(B,1),2);
for k=1:size(B,1)
col = find(B(k,:)==0,1);
First_zero_coordinates(k,:) = [ k col];
end
First_zero_coordinates =
1 2
2 1
3 3
4 1
Uet
2014-6-11
Uet
2014-6-11
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