How to add a polygon to UIAxes in appdesigner?

I currently can create a rectangle in the UIAxes with this code:

rect = rectangle(app.UIAxes, 'Position', [0 26 .13 98], 'FaceColor', 'r', 'EdgeColor', 'r');

but what if I want to define where each corner is in the axes. As in, not a rectangle or any other standard shape. I have looked into the patch object, but this code does not work:

X = [0 0 .13 .13] 
Y = [26 124 124 26]
shape = patch(app.UIAxes, app.swathX, app.swathY, 'r');

How can I do that with UIAxes?

[Greg]

"but this code does not work:"

How so? What does it do? How is that different from what you expect? Does it throw an error? Post the error if it does.

I would hope

X = [0 0 .13 .13] 
Y = [26 124 124 26]
shape = patch(app.UIAxes, app.swathX, app.swathY, 'r');

throws some form of unknown variable/property error, as you define X and Y but use swathX and swathY.

[Kyle Millar]

In the third line, it should say X and Y. I forgot to change the variable names in the question. This is the error I get:

Error using patch
While setting property 'Parent' of class 'Patch':
Functionality not supported with UIAxes. For more information, see Graphics Support in App Designer.

Answer 1

[Greg]

ps = polyshape([0,0,.13,.13],[26,124,124,26]);  % This is still a rectangle though...
pg = plot(uiaxes,ps);

[Kyle Millar]

I get this error when I do that. I don't think that will work.

Invalid default value for property 'swath' in class 'App1':
Undefined function 'polyshape' for input arguments of type 'double'.

PS. I know its a rectangle in that example

[Greg]

My apologies, I didn't realize polyshape is new in R2017b.

That's probably also the problem with patch, I don't think it was supported in uifigures until one of the newer releases as well.

[Kyle Millar]

So, is there another method you know of that I can use in 2016b?

[Greg]

Does fill work with uiaxes in R2016b?

[Kyle Millar]

No. It says Functionality not supported in App Designer apps

[Greg]

Update?

[Kyle Millar]

I tried to use plot, but that was giving me more problems. I don’t think that would work. I realized I could accomplish the same thing I wanted with just filled rectangles and filled triangles, but it seems like MATLAB has no good way of adding triangles either. I may just scratch the MATLAB attempt, and try using a programming language where I can get more flexibility.

[Sean de Wolski]

Is upgrading not an option? App designer is under active development so it gets a lot of new features with each release.

[Kyle Millar]

I'm not sure. I don't think so. It is a school license that has not ran out yet, but I just graduated. I don't know if I can upgrade it anymore.