Load .mat-file in Web App Server

Hi folks,

I have an App running on Web App Server. What I'm trying to do is read in a .mat-file and set some values depending on the file.

My aim is to get to a point where a user can make some changes on the GUI/app then save the entered values to a custom .mat-file and load them back into the app to a later point in time. I hope my problem is okay to understand.

If I run my App out of Matlab save/load works fine. But on the deployed app on the server it doesn't.

I get the following messages in the log of the server:

% saveload.mat is uploaded successfully
% Error using load
% Unable to read file 'saveload.mat'. No such file or directory.

What am I doing wrong?

[Mario Malic]

saveload.mat probably is not on the search path of Web App Server. Find the folder where uploaded files are saved to.

[Dominik Müller]

Okay there is a path on the server where the document get's saved. But the path seems to be depending on the current session. So everytime I connect to the server and try to load a document the Windows path is a different one.

Is there a way to define a path where the upload should go to?

[Mario Malic]

Are you able go identify the session name/instance? If yes, you can use genpath and/or addpath, otherwise you can add all folders within the session folder to the search path, but this wouldn't be a good solution.

[Dominik Müller]

Thank you Mario, you led me to the right direction. Problem's solved now.

[Mario Malic]

Great! Also, don't use cd, rather supply full or relative path to load function. It is slow and can cause issues.

Answer 1

[Dominik Müller]

The solution is quite simple:

[file,path] = uigetfile('*.mat');   % see matlab documentation of uigetfile
cd(path)
data = load(file);