How to display names in edit field of the files selected to run .m file using button in appdesigner

Hi I have a .m file which I wants to run using button function.

The .m file asks for the two input .mat files to be selected to execute

How can I display the names of the two input .mat files selected in the edit field boxes.

%%%%%%%% main model for reference
function RunModel
    MFilDirName='ModelScripts';  %% Sub directory contains the supporting .m files/functions   
    addpath(MFilDirName)  %% Add this subdirectory to the Matlab search path
    
    if strcmp(LoadFiles(2),'EndExit') %% Load file is a .m function inside ModelScripts
    disp('User abort')
    return
    end
end

%%%%%%%%%%%%%%% App designer run button
function RunButton(app, event)
    RunModel;
end

Answer 1

[Deepak]

Hi Harish,

To my understanding, you have a MATLAB script that takes as input two MAT files, and you want to run the MATLAB script with a Push Button callback and display those two MAT file names in the Edit Field of the App Designer.

To solve this task, we can create a “LoadFiles.m” MATLAB script that will open a dialog box to select two MAT Files, then get the file names from the entire path by using the “fileparts” function of MATLAB.

In our Push Button Callback (RunButton), we can set the values of both Edit Fields with the file names if the status is correct. This way, we can display both MAT file names in the Edit Field.

Below is the App Designer and MATLAB code that addresses the task:

MyApp.mlapp (RunButton Callback)

function RunButton(app, event)
            [status, fileNames] = RunModel;
            if strcmp(status, 'Continue')
                
                app.EditField1.Value = fileNames{1};
                app.EditField2.Value = fileNames{2};
            else
                disp('User abort');
            end
end

RunModel.m

function [status, fileNames] = RunModel
    MFilDirName = 'ModelScripts';  %% Subdirectory contains the supporting .m files/functions   
    addpath(MFilDirName);  %% Add this subdirectory to the Matlab search path
    
    [status, fileNames] = LoadFiles(2); %% Load file is a .m function inside ModelScripts
    if strcmp(status, 'EndExit')
        disp('User abort');
        return;
    end
end

LoadFiles.m

function [status, fileNames] = LoadFiles(numFiles)
    fileNames = cell(1, numFiles);
    for i = 1:numFiles
        [file, ~] = uigetfile('*.mat', 'Select a MAT-file');
        if isequal(file, 0)
            status = 'EndExit';
            return;
        else
            [~, name, ext] = fileparts(file);
            fileNames{i} = [name, ext];
        end
    end
    status = 'Continue';
end

Attaching the documentation of functions used in the MATLAB script for reference:

https://www.mathworks.com/help/matlab/ref/uigetfile.html

https://www.mathworks.com/help/matlab/ref/fileparts.html

I hope this helps.