Convert cell array with characters to vector with numbers?
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Hi guys,
I've been trying to get a cell array that looks like this:
y =
'a'
'a'
'a'
'b'
'b'
'a'
'a'
'b'
'a'
'b'
'b'
'b'
to convert it to a vector that looks like this: y =
1
1
1
0
0
1
1
0
1
0
0
0
How do I do this? I've been trying to get it right with strfind and using it on the cell array and use those results to alter the contents of the cell array before I convert it to a vector with cell2mat().
But no luck so far.
Can someone help me with this?
Thanks in advance.
采纳的回答
Walter Roberson
2012-6-17
ismember(y, 'a')
1 个评论
the cyclist
2012-6-17
If your array "y" is large, or you do this operation many times, you might want to do some timing experiments. On my machine, ismember() takes about 10 times longer than strcmp() to do this operation on moderately large arrays.
更多回答（2 个）
the cyclist
2012-6-17
One of many ways:
strcmp(y,'a')
1 个评论
Jan
2012-6-18
I prefer this, because it is lean and fast for small and large input.
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