Displaying an image in app designer

Hello. I'm new to app designer and I need to display a matrix saved as varaible app.Matrix in a kind of a preview window (not in a separate figure yet) with a button press. I tried using a UIAxes and a following code to create a place for the preview image:

title(app.UIAxes, []);

xlabel(app.UIAxes, []);

ylabel(app.UIAxes, []);

app.UIAxes.XAxis.TickLabels = {};

app.UIAxes.YAxis.TickLabels = {};

I now have an empty plot but I'm not sure how to use the imagesc function and connect it to the button so that it displays my matrix as a grayscale image as imagesc(Matrix) normally would in Matlab. I'd appreciate some tips in that matter.

Answer 1

[Cris LaPierre]

Use the following syntax:

imagesc(ax,___)

where ax is your target axes (app.UIAxes). You connect it to your button by placing the code inside the button's callback function.

[Filip Juchnicki]

Thank you. Works perfectly but one more question. What to use if I want to attach another button to clear the preview window? Use the same syntax but with [] or 0 instead of a variable?

[Cris LaPierre]

I would suggest using cla.

cla(ax)

[Filip Juchnicki]

Thank you again. Works.