Properties of Polaraxes in App Designer not working

Hello.

In the app I'm currently working on I have Tabs, and in one of these Tabs there is a Grid and inside this Grid there is supposed to be a polarplot (polarbubblechart to be specific). I defined myself some Polaraxes via

pax = polaraxes('Parent', app.GridLayout8, 'ThetaZeroLocation', 'bottom');

In those I then plot the polarbubblechart. This works alright, but the properties of the polaraxes, whether I define them as above or manually after the fact, like

pax.ThetaZeroLocation = 'bottom';

nothing happens. I tried different properties as well.

What is going on here? Why doesn't the plot react?

Thanks in advance.

Answer 1

[Steven Lord]

As a high-level plotting function, by default polarbubblechart will reset most of the properties of the polaraxes to their defaults before plotting. This is described on the documentation pages for the hold and newplot functions. Using some sample data from the polarbubblechart documentation page:

Without HOLD

pax = polaraxes('ThetaZeroLocation', 'bottom');
pax.ThetaZeroLocation

ans = 'bottom'

th = linspace(0,2*pi,10);
r = rand(1,10);
sz = rand(1,10);
polarbubblechart(th,r,sz);

pax.ThetaZeroLocation

ans = 'right'

If you tell MATLAB to hold on (or manually set the polaraxes property NextPlot to 'add' or 'replacechildren') then polarbubblechart won't reset the properties.

With HOLD

figure
pax = polaraxes('ThetaZeroLocation', 'bottom');
pax.ThetaZeroLocation

ans = 'bottom'

pax.NextPlot % See the newplot documentation page for an explanation of 'replace'

ans = 'replace'

hold on
pax.NextPlot % and an explanation of 'add'

ans = 'add'

th = linspace(0,2*pi,10);
r = rand(1,10);
sz = rand(1,10);
polarbubblechart(th,r,sz);

pax.ThetaZeroLocation

ans = 'bottom'

Since the NextPlot property value was 'add' when I called polarbubblechart MATLAB will "not delete existing plots or reset axes properties before displaying the new plot."

[Adrian]

Thank you, this is what I needed.