Plotting multiple data sets on the same polaraxes in AppDesigner
3 views (last 30 days)
Show older comments
Should I be able to plot 2 or more data sets - e.g., measured and interpolated points - in the same polaraxes ?
I can do this in a plain figure, or GUIDE, using "hold on" and returning a handle from each plot, but I'm not succeeding in AppDesigner(2021b), which I'd like to use because of its clean appearance, ease of use and WYSIWIG screen captures using exportapp.
I'm working from the on-line example:
openExample('matlab/AppdPolarExample')
The code below fails where "plotmark" is defined:
% Define theta. Get a and b
theta = double(0:360)*(pi/180.0);
steps = double(0:10:360)*(pi/180.0); % My new code
a = app.aEditField.Value;
b = app.bEditField.Value;
% Calculate r and plot it
r = (1 + sin(a.*theta)).^(1/b);
s = (1 + sin(a.*steps)).^(1/b); % Also here
plotline = polarplot(app.Pax, theta, r);
plotmark = polarplot(app.Pax, steps, s, 'o', ...
'MarkerFaceColor', 'r', 'MarkerEdgeColor', 'k'); % THE ERROR IS HERE
% Set line color
plotline.Color = app.DropDown.Value;
plotline.LineWidth = 1.5;
The error message is "invalid or deleted object".
Are multiple plots impossible here, or is there a work-around ?
0 Comments
Accepted Answer
Kevin Holly
on 18 Jul 2022
Edited: Kevin Holly
on 18 Jul 2022
You can still use hold on in App Designer, but you have to specify the axes.
properties (Access = private)
Pax % Polar axes
end
methods (Access = private)
function updateplot(app)
% Define theta. Get a and b
theta = 0:pi/1800:2*pi;
steps = double(0:10:360)*(pi/180.0); % My new code
a = app.aEditField.Value;
b = app.bEditField.Value;
% Calculate r and plot it
r = (1 + sin(a.*theta)).^(1/b);
s = (1 + sin(a.*steps)).^(1/b); % Also here
plotline = polarplot(app.Pax, theta, r);
hold(app.Pax,"on")
plotmark = polarplot(app.Pax, steps, s, 'o', ...
'MarkerFaceColor', 'r', 'MarkerEdgeColor', 'k');
% Set line color
plotline.Color = app.DropDown.Value;
plotline.LineWidth = 1.5;
end
end
2 Comments
More Answers (0)
See Also
Categories
Find more on 2-D and 3-D Plots in Help Center and File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!