Finding matrix column index based on certain conditions

Hello guys,

I want to extract the column indexes of a matrix which contains necessarily one element equals to 1 and all the other equal to zero. Matrix example:

 A =

     1     1     1     0     0     0     0     1     0     0     0     0     0
     0    -1    -1    -1     0     0     0    -1     1     0     0     0     0
     0     0     0     1     0    -1     0     0     0     1     0     0     0
     0     0     1     0     1     0    -1     0     0     0     1     0     0
     0     0     0     0     0     1     1     0     0     0     0     1     0
     0     1     0     0    -1     0     0     0     0     0     0     0     1

The columns of this matrix which obey these conditions are: 1,9,10,11,12 and 13.

How can I implement these rules into my code??

Thank you very much indeed!

Answer 1

[James Tursa]

result = find(sum(A==1)==1 & sum(A==0)==(size(A,1)-1));

[Lucas Carvalho]

Thank you very much!

Answer 2

[Walter Roberson]

find( sum(A == 1) == 1 & sum(A == 0) == size(A,1)-1 )

[Lucas Carvalho]

Thank you very much!