How to fix this code trying to create 3 seperate plots from a 3D plots exported to png.

This is code to take all fig files from my map and to convert the to a png, with exception of a 3DPlot, which I want to export as 3 different figures for all axis combinations : X-Y X-Z and Y-Z

the Z axis is not found though.

I made most of this code with AI and am a novice when it comes to coding,

As far as I understand its not finding 3 axis, returning i = 1

returning the following error:

Index exceeds the number of array elements (1).

Error in Fig_to_png_Script (line 27)

copyobj(get(axesHandles(2), 'Children'), ax2);

I added Numel exceptions in order to skip the error in this version so the code runs and creates only the X-Y plot

% Get all .fig files in the current directory
figFiles = dir('*.fig');

% Loop through each .fig file
for i = 1:length(figFiles)
    figName = figFiles(i).name;
    % Check if it's a 3D plot
    if contains(figName, '3DPlot.fig', 'IgnoreCase', true)
        % Load the figure
        fig = openfig(figName, 'invisible');
        % Get handle to the axes
        axesHandles = findobj(fig, 'type', 'axes');

        % Handle the X-Y plane (axis 1)
        if numel(axesHandles) >= 1
            newFig = figure;
            ax1 = axes('Parent', newFig);
            copyobj(get(axesHandles(1), 'Children'), ax1);
            xlabel(ax1, get(get(axesHandles(1), 'XLabel'), 'String'));
            ylabel(ax1, get(get(axesHandles(1), 'YLabel'), 'String'));
            [~, figBaseName, ~] = fileparts(figName);
            saveas(newFig, [figBaseName '_axis_1.png']);
            close(newFig);
        end

        % Handle the X-Z plane (axis 2)
        if numel(axesHandles) >= 2
            newFig = figure;
            ax2 = axes('Parent', newFig);
            copyobj(get(axesHandles(2), 'Children'), ax2);
            xlabel(ax2, get(get(axesHandles(2), 'XLabel'), 'String'));
            zlabel(ax2, get(get(axesHandles(2), 'ZLabel'), 'String'));
            [~, figBaseName, ~] = fileparts(figName);
            saveas(newFig, [figBaseName '_axis_2.png']);
            close(newFig);
        end

        % Handle the Y-Z plane (axis 3)
        if numel(axesHandles) >= 3
            newFig = figure;
            ax3 = axes('Parent', newFig);
            copyobj(get(axesHandles(3), 'Children'), ax3);
            ylabel(ax3, get(get(axesHandles(3), 'YLabel'), 'String'));
            zlabel(ax3, get(get(axesHandles(3), 'ZLabel'), 'String'));
            [~, figBaseName, ~] = fileparts(figName);
            saveas(newFig, [figBaseName '_axis_3.png']);
            close(newFig);
        end

    else
        % Load the figure
        fig = openfig(figName);
        % Save as PNG
        saveas(fig, [figName '.png']);
        % Close the figure
        close(fig);
    end
end

Answer 1

[Voss]

The error message

Index exceeds the number of array elements (1).

on the line

copyobj(get(axesHandles(2), 'Children'), ax2);

indicates that axesHandles only has one element. That is, even your 3DPlot figure only has one axes object.

(Confusion may arise from the fact that in MATLAB an axes object is a graphics object for plotting which may be viewed in 2d or 3d. So it's one "axes"; it contains an x-axis, y-axis, and a z-axis, but these are not objects of type "axes" but rather "NumericRuler".)

To save the X-Y, X-Z, and Y-Z views of the axes into three separate files, you can do as follows:

% Get all .fig files in the current directory
figFiles = dir('*.fig');

% Loop through each .fig file
for i = 1:length(figFiles)
    figName = figFiles(i).name;
    % Check if it's a 3D plot
    if contains(figName, '3DPlot.fig', 'IgnoreCase', true)
        % Load the figure
        fig = openfig(figName, 'invisible');
        % Get handle to the axes
        ax = findobj(fig, 'type', 'axes');
        
        % Create new figure and axes
        newFig = figure;
        ax1 = axes('Parent', newFig);
        
        % Copy stuff from old axes to new axes
        copyobj(ax.Children, ax1);
        
        % set the new axes labels
        ax1.XLabel.String = ax.XLabel.String;
        ax1.YLabel.String = ax.YLabel.String;
        ax1.ZLabel.String = ax.ZLabel.String;
        
        % save the 3 views to files
        [~, figBaseName, ~] = fileparts(figName);
        
        view(ax1,[0 90]) % xy view
        saveas(newFig, [figBaseName '_axis_1.png']);
        
        view(ax1,[0 0]) % xz view
        saveas(newFig, [figBaseName '_axis_2.png']);
        
        view(ax1,[90 0]) % yz view
        saveas(newFig, [figBaseName '_axis_3.png']);
        
        % Close the figure
        close(newFig);
        
    else
        % Load the figure
        fig = openfig(figName);
        % Save as PNG
        saveas(fig, [figName '.png']);
        % Close the figure
        close(fig);
    end
end

[Jacco]

Thanks so much it works perfectly

[Voss]

You're welcome!