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App Designer: Subplots in uiplane

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AdiKaba on 27 Jul 2020
Commented: Adam Danz on 28 Jul 2020
I want to plot in uipanel in App Designer and crated subplots as shown below. I want to plot in the uipanel and I want the title of the panel to change to the type of analysis I am performing. For example, I have a function that performs Transform domain analysis and display the results in subplots and change the title of the panel. I also have another function subplots are displayed in the same uipanel but with different titles. All this works fine.However, the plots are displayed in a new App window. For example, I have a function called Plots (shown below) which is connected to the App using a callback function. When this function is called, it always plots results in a new App window. I want the results to show in an App from which the function is called.
How could I prevent App designer from opening a new window?
function [] = Plots(inputData)
myMainGUICopy = MainGUI;
ResultsPanel = myMainGUICopy.ResultsPanel;
ResultsPanel.Title = 'Transform Domain Representation of Input Data';
%Create Subplots
ax1 = subplot(2,3,1,'Parent',ResultsPanel);
ax2 = subplot(2,3,2,'Parent',ResultsPanel);
ax3 = subplot(2,3,3,'Parent',ResultsPanel);
ax4 = subplot(2,3,4,'Parent',ResultsPanel);
ax5 = subplot(2,3,5,'Parent',ResultsPanel);
ax6 = subplot(2,3,6,'Parent',ResultsPanel);


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AdiKaba on 28 Jul 2020
Thank you for your comments.
InputData is a variable that holds the data I want to plot. MainGUI is the app that I want to plot my data onto. As you can see from the code snippet, it is not defined within Plots function. By copying MainGUI, I am trying to access a copy of main app.
Adam Danz
Adam Danz on 28 Jul 2020
But where does MainGUI come from? Each function has its own workspace so the variable must either be defined within the function or it must be a global variable.
Pass the MainGUI variable to the Plots() function. If the Plots() function is embedded within the App Designer code, then the first input should be app (or whatever you named that variable, if you renamed it). If the Plots() function is external to App Designer, you should pass that variable in as an input. Do not use global variables.
Also, there is no need to copy the MainGUI variable. I don't understand why you would need to do that.
Are the number of subplots and the subplot layout always the same or does that vary?
AdiKaba on 28 Jul 2020
You brought up valid points. I passed the app object to each function and removed the line that copies MainGUI; I inherited the code and wasn't why MainGUI was being copied. The number of subplots vary based on the type of analysis performed. Since all functions are external to App Designer, I have the flexibility to define subplots based on the number of plots.
Thank you.

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Accepted Answer

Adam Danz
Adam Danz on 28 Jul 2020
Edited: Adam Danz on 28 Jul 2020
Since this isn't your code, I don't have to worry about sounding insulting when I say that this code is a mess! :)
I wouldn't use subplot() to create the axes in an app. Instead, look into tiledlayout which returns a tiled layout object used to define the number and arrangement of axes within the panel.
For example,
% Clear existing axes on panel and set new layout as 2x2
% The axis will not appear yet. app.Panel is the UI panel handle.
t = tiledlayout(app.Panel, 2, 2);
% Access first subplot-tile for plotting
ax = nexttile(t);
plot(ax, ___)
% Access next subplot-tile for plotting
ax2 = nexttile(t);
plot(ax2, ___)


AdiKaba on 28 Jul 2020
Thank you, this is cleaner and efficient :)
Adam Danz
Adam Danz on 28 Jul 2020
Glad I could help.

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