MATLAB: I have a variable with a string that I would like to use as a filename, how to input that string into a function rather than the variable name

strings

As below, I have a dialog box asking me for a filename.
It will then add the file extension onto the end.
            answer = inputdlg(fileName,dlgtitle,dims,definput);
            fileName1 = strcat(answer,'.dxf');
            
            FID = dxf_open(fileName1);
I've tried numerous different ways, and they all end up with errors.
The code works normally if I hardcode the file name into the dxf_open function. e.g. 'Export.dxf'

Best Answer

I think I see the problem. Did you notice that the output of the inputdlg command is a cell array? You need the contents of that cell array, which is the character array you want. So you need something like this:
fileName1 = strcat(answer{:},'.dxf');
Note the {:} after answer, to get at the contents of the cell array.
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