MATLAB: Str2double gives NAN

nanstr2double

Hi,

I would like to do this with the attached string array.

CombinedStim(:,2)==k

It is impossible that CombinedStim is string, whereas k is a double.

I tried to use str2double and got NAN values because the first column contains strings, whereas second column is numbers.

Then i try regexp, however I was not succesfull again.

Is there any way I can make this work?

Thank you

Best Answer

What about only converting second column to double

str2double(CombinedStim(:,2)) == k

Or using num2str and then use strcmp()

strcmp(CombinedStim(:,2), num2str(2))

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MATLAB: Str2double conversion…

Because str{strv} will be a single character and equal to 'N' assuming the string 'Num_X=' is in the text in the first line; otherwise it'll be whatever character happens to be in that position in the line. fgetl returns a character array; subscripting it with a single index returns only a single character, not a full string as does a reference to a cell string. Of course, str2double and friends aren't cellstring aware.

textscan is probably a better approach to reading the file; let's see a small subset of the file format...

Best Answer

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