When I do shading interp for pcolor on App Designer the graph becomes blank.

Whenever I try to change the shading or facecolor on my pcolor graph in App Designer the chart disappears and I get an error message.

The graph works when I don't try to change the shading or orientation.

pcolor(app.UIAxes,XPositions,YPositions,Temperature)
app.UIAxes.FaceColor = 'interp';

% Unrecognized property 'FaceColor' for class 'matlab.ui.control.UIAxes'.
%% It also doesn't recognize 'shading'

I also tried to use imagesc but I can't get the y-direction to flip or shading to interp.

set (app.UIAxes, gca,'YDir','normal')

% Error using matlab.ui.control.UIAxes/set
% Invalid parameter/value pair arguments.

Is this just not something that is possible on App Designer?

[Adi Purwandana]

Try to use FaceColor 'flat'

h1 = pcolor(app.UIAxes,longn,latn,log10(Epsgrid_a_50'));

h1.FaceColor = 'flat';

colormap(app.UIAxes,jet(6))

colorbar(app.UIAxes);

Answer 1

[Voss]

% Unrecognized property 'FaceColor' for class 'matlab.ui.control.UIAxes'.

This error happens because FaceColor is not a uiaxes (or axes) property. It is a surface property, which is what is created by pcolor, so try this:

my_surface = pcolor(app.UIAxes,XPositions,YPositions,Temperature);
my_surface.FaceColor = 'interp';

"I also tried to use imagesc but I can't get the y-direction to flip"

Try this:

set(app.UIAxes,'YDir','normal');

(gca is the current axes; app.UIAxes is your uiaxes; it's not correct to use both.)