Opening A directory of folders and accessing data within each folder

Good Morning

I'm trying to write a batch code which does the following:

Open directory In a loop open each folder in the directory In a loop open each file with a '.res' file type in the folder Perform functions on each file Plot the data from each file Plot the data on top of the file within each folder

Plot the data from the next folder in a different figure

So far I have something like this, although its not really working

mainFolder = dir(foldername);
figNum = 1;

for k = 1:numel (mainFolder.name)
subFolder = dir(mainFolder(k).name,'*.res')
for j = 1:numel (subFolder.name)

rawData = importdata(subFolder(j).name,' ');
timeData = rawData(:,1);
ampData = rawData(:,2);
figure(figNum)
hold on
plot (timeData,ampData)
%other function stuff
end
hold off
figNum = figNum +1;
end
end

Any input would be greatly appreciated!

Answer 1

[Image Analyst]

Attached is s simple script which recurses into a folder and all subfolders of it looking for files of a certain filename pattern.

[Mary]

Thank you - I'll edit this and give it a try!

EDIT: I've been working with this code by I'm still having trouble getting it to load the files within the subfolder - is there I way I need to re-add in the fullfile string?

[Brian Droncheff]

I did notice that there was an issue with the semi colon ';' needing to be a colon ':' for parsing to work in strtok e.g. instead of strtok(remain, ';'); One needs to have strtok(remain, ':');

Very nice script though - it helped a lot!!

[Image Analyst]

Brian, sorry - you're incorrect -- semicolon is what you want, not colon. Just look at the remain variable and you'll see that a semicolon is what delimits folder names. The colon is after drive letters and is not a delimiter - it's part of the full path of the folder.

Anyway, in newer versions they have strsplit, as well as a dir() that will recurse subfolders on its own. So my code I posted here is obsolete.

Answer 2

[Sean de Wolski]

Both for-loop signatures look like the following, which is likely invalid.

for k = numel mainFolder.name

What you likely want is

for k = 1:numel(mainFolder)

I.e. the number of folders you wish to loop over (the size of the mainFolder struct).

[Mary]

thank you - I actually had it correct in my code - I just typed it incorrectly here!

My problem is with the actual import - I get an error that it wont read the file without the full file name.

[Image Analyst]

Copy and paste is helpful to avoid problems like that.

[Mary]

You're right - I thought it would be too cluttered posting my commented code so I just rewrote it in english and in fake code.

I'll most likely copy/paste in the future so I can immediately run edits from the command prompt.