converting a horizontal matrix to vertical

Hello. I am trying to convert a 100*2 matrix to 2*100 matrix. I appreciate if you give me any idea. The reason is I need to find the pick of negative data at second column, and I am using following code:

NEG=[find(E(:,1)<0) E(E(:,1)<0,1)];
so for using following code I need my matrix be 2*100
EE=findpeaks(NEG(:,2));

ANSWER

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Use transpose, which can also be written .’

>> A = [1,2;3,4;5,6;,7,8]
A =
     1     2
     3     4
     5     6
     7     8
>> A.'
ans =
     1     3     5     7
     2     4     6     8

converting a horizontal matrix to vertical