How do I display the workspace variable file name via MATLAB script?

12 views (last 30 days)
bobby
bobby on 30 Sep 2021
Commented: bobby on 30 Sep 2021
What line of code would display the workspace variable file name (so in this case it would be a .mat file) being used?
My goal is to be able to have the file name match up its respective plotted histogram. Said code would be a part of an already existing script that is analyzing multiple .mat files in a for loop.
Thank you all who respond and help!
  2 Comments
bobby
bobby on 30 Sep 2021
Having the file name being shown in the histogram name would certainly suit me!
And yes, each .mat file in the loop would save the matrix under the variable name "IntensityImagedataCh1". Would that impact how the code is written?

Sign in to comment.

Accepted Answer

Kevin Holly
Kevin Holly on 30 Sep 2021
Edited: Kevin Holly on 30 Sep 2021
"And yes, each .mat file in the loop would save the matrix under the variable name "IntensityImagedataCh1". Would that impact how the code is written?"
Yes, it would. This actually simplifies the problem.
We first load the data as a structure here:
Data = load(fullfile(files(i).folder, files(i).name))
This structure contains subfields. In your case, the subfield is named "IntensityImagedataCh1" where it contains a matrix.
We can access this subfield by using a period:
Data.IntensityImagedataCh1
Since the subfield is the same between files, we do not need to change this line in code that accesses the matrix.
So, this should work for you:
%let's analyze each file
for i = 1:length(files)
Data = load(fullfile(files(i).folder, files(i).name))
histogram(Data.IntensityImagedataCh1)
drawnow;
xlabel('X label')
ylabel('Y label')
title(['A histogram of ' strrep(files(i).name,'.mat','')])
saveas(gcf,fullfile(save_directory,strrep(files(i).name,'.mat','.fig')),'fig');
end
The above should save the the filename in the title of the histogram and insert the name in the saved figure's filename.

More Answers (0)

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!