How do I count the number of .CSV files in a folder?

Hi,

I would like to know how to count the number of .CSV files in my folder? I have to do this for multiple folders so I would like to choose them.

So far I have something like this...

source_dir = uigetdir([]); 
d = dir([source_dir, '\*.csv']);
n=length(d(not([d.isdir])));

but I get an error at the second line. Help!

Answer 1

[Image Analyst]

n=length(d)

[Brian]

It's not just this command because my error occurs at the definition of d

[Image Analyst]

This worked fine for me:

% Look for m files in current folder and count them.
source_dir = pwd; %uigetdir([]);
d = dir([source_dir, '\*.m']);
n=length(d)

No error whatsoever. Changing it to look for csv files will not then cause an error.

[Mr M.]

this is not working for me, counts zero

[Image Analyst]

Then you don't have any .m files off the source_dir. Check your folder and make sure there are m-files there or else change your file pattern. Make sure you don't have a double backslash in there. You might use full file instead fullfile(source_dir, '*.m').

[Miranda Zhang]

Do you use Mac OS? I had the same problem but then realised it's because I'm supposed to use '/' instead of '\' because it's not Windows.

[Guillaume]

because I'm supposed to use '/' instead of '\' because it's not Windows.

... and that is why you use fullfile instead of building your own paths by string concatenation. fullfile will do the right thing regardless of which platform you're on.