Is there unknown error in strcmp?

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Casey
Casey 2012-10-1
Hi,
I tried to use strcmp between a string and a cell array. Instead of getting '1', I keep getting '0'. May I know where I go wrong?
Example:
D=[[28];[28];[28]...[0];[0]]
Command Window
>>strcmp('[28]',D(2));
ans = 0

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Andrei Bobrov
Andrei Bobrov 2012-10-1
编辑：Andrei Bobrov 2012-10-1
D={[28];[28];[28];[0];[0]};
strcmp('[28]',['[',num2str(D{2}),']'])
or
isequal({28},D(2))
or
28 == D{2}
or
abs(28 - D{2}) < eps(100)
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Jan
Jan 2012-10-1
The 1st solution is really strange. Please note that: D = {[28]} is equivalent to D={28}, which means that you store a scalar double with value 28. Surrounding a scalar by square brackets wastes time and reduses the readability only. STRCMP() operates on strings, which are CHAR vectors.
Finally I suggest to use the 3rd method D{2} == 28, because converting the value to a string is very indirekt and inefficient.

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