Using a Checkbox to add/ remove Text in contourplot in Appdesigner

Hey,

i'm would like to know, how to use a Checkbox to activate the text of the ISO- Lines in a contourf- plot in the Matlab Appdesigner.

Usually i write this in Scripts:

[c1,p1] = contourf(x,y,z,numberofISOlines);
clabel(c1,p1,'FontWeight','bold','FontSize',4,'Color','w','FontName','Courier');%Example

So in Appdesigner i wrote:

contourf(app.UIAxes1,x,y,z,numberofISOlines);

..and tried to activate Text with a checkbox in the same way i used to activate for example a colormap:

This works:

function ColorbarCheckBoxValueChanged(app, event)
            valuecolormap = app.ColorbarCheckBox.Value;
                if valuecolormap == true
                   colorbar(app.UIAxes1,"eastoutside")
                else
                   colorbar(app.UIAxes1,"off")
                end
end

So i can insert a colorbox in my current plot without updating/ recalculating the plots

This doesn't work:

function ISOtextCheckBoxValueChanged(app, event)
            valueISOtext = app.ISOtextCheckBox.Value;
            if valueISOtext == true
                ShowText(app.UIAxes1,'on')
            else
                ShowText(app.UIAxes1,'off')
            end
end

Asan Issue i get this:

Undefined function 'ShowText' for input arguments of type 'matlab.ui.control.UIAxes'.

So i probably use the ShowText in a wrong way .

Does someone have a solution for this? Thanks in advance!

Answer 1

[Cris LaPierre]

You need to use the handle to your contour plot to set the property of ShowText to on or off.

[x,y,z] = peaks;
[C,h] = contour(x,y,z);
h.ShowText='on';