Saving All Image files in a UITable in App Designer

Hi, I'm trying to write a code where I have image files in my UITable (all listed in column 1) and I would like to have a save all image on my menu bar. What I'm having trouble with is finding a way to call all the images listed in my UITable and running those listed images again and save each image under an updated filename in a new folder.

Here is what I have so far:

            filter = {'*.jpg';'*.png';'*.tif';'*.pdf';'*.eps'};
            [filename,filepath] = uiputfile(filter);

            
            app.UITable.Data = [app.UITable.Data;app.EDUcolorDATA];%%MY TABLE WITH ALL THE IMAGE FILES
            filepath = app.UITable.Data{:,1};
            
            h=1;
            
            while h<=length(filepath)
                
                close all
                img = imread(filepath{h,1});
                EDUInitialThresholding
                mask = 100./app.mask;
                EDUThresholdRefining
                [pathstr,name,parts] = fileparts(filepath{h,1});
                newname = sprintf('%s_processed', name);
                newname1 = [name, parts];
                if ischar(newname1)
                    exportgraphics(figure(1),[filepath newname1]);
                end
               
                h=h+1;
                
            end

When I run this code, I encounter an error where img = imread(filepath{h,1}); Error: Brace indexing is not supported for variables of this type.

How would I go about looping each image file I have, then running my algorithm and saving each image file with an updated name?

Answer 1

[Mario Malic]

Hello,

Here's some code, but it's not tested. I don't know which one of your functions display the processed images, you can use an UIAxes or use function gca to get handle of currently active axes, therefore you don't need to open and close the figure all the time.

filter = {'*.jpg';'*.png';'*.tif';'*.pdf';'*.eps'};
[filename,filepath] = uiputfile(filter);

app.UITable.Data = [app.UITable.Data;app.EDUcolorDATA];%%MY TABLE WITH ALL THE IMAGE FILES
filepath = app.UITable.Data{:,1};
% ax = app.PreviewImagesUIAxes; % If you want to create this component
% ax = gca; % If you want to plot on existing axes

for ii = 1 : 1 : length(filepath) 
    img = imread(filepath{ii,1});
    EDUInitialThresholding
    mask = 100./app.mask;
    EDUThresholdRefining
    [pathstr,name,parts] = fileparts(filepath{ii,1});
    newname = sprintf('%s_processed%s', name, parts);
    exportgraphics(ax,fullfile(filepath, newname));
end

[Raymond Briones]

I still get Error: Brace indexing is not supported for variables of this type. for img = imread(filepath{ii,1});