Why can't I open a file on MacBook?

Hi!

I've tried to run this code and open a file on macbook but here's still this an error.

When I used this code on Windows, it used to work.

Does anyone knows why?

path = '/Users/martine/Desktop/projekt/csv/Stop Signal'

folder = dir('*.csv')

x = folder(1).name

Error is:

Index exceeds the number of array elements (0).

Answer 1

[Steven Lord]

I recommend not creating a variable named path, as path already has a meaning in MATLAB. See doc path for more information on that function.

Just because you define a variable named path does not mean that functions like dir will automatically look there. I recommend you use fullfile to assemble the path to the folder and the extension you want to search for.

location = fullfile(matlabroot, 'toolbox', 'matlab', 'general')

location = '/MATLAB/toolbox/matlab/general'

filespec = 'bench*';
D = dir(fullfile(location, filespec))

D = 2×1 struct array with fields:
    name
    folder
    date
    bytes
    isdir
    datenum

{D.name}.'

ans = 2×1 cell array
    {'bench.dat'}
    {'bench.m'  }

If I'd just asked for the file using the filespec it wouldn't have looked in that directory and so wouldn't have found any such files.

D2 = dir(filespec)

D2 = 

  0×1 empty struct array with fields:

    name
    folder
    date
    bytes
    isdir
    datenum

[Marcin Sajdak]

Thanks :)