How to draw shapes in uiaxes on app designer?

I need to put a square in the middle of my 100x100 uiaxes on app designer. I tried using

rectangle(‘Position’,[25,25,50,50])

But that just creates a new window when I click run. The shape needs to be in the axes.

Answer 1

[Marek Balaz]

Hello, try to use

rectangle(app.UIAxes, 'Position', [25,25,50,50])

[Kyle Millar]

Thank you. That worked.

[shahzeb ali]

hey how to draw a circles with different color in app designer???

[Marek Balaz]

Hey for drawing circles you can use rectangles with 'Curvature' set to [1 1] which will round corners of rectangle and you can achiev circle. Try to use:

rectangle(app.UIAxes, 'Position', [25,25,50,50], 'Curvature', [1 1])

Answer 2

[Steven Kaplan]

Has anyone successfully used the viscircles function in app designer? I am getting the following error:

Error using uistack (line 53)

Functionality not supported with figures created with the uifigure function. For more information, see Graphics Support in App Designer.

Error in viscircles (line 165)

uistack(thinCircHdl,'up');

[Taqieddine Sbita]

I have the exact same issue.

I cannot get the circles to show on top of an image in the app designer.

[Hasaan Ijaz]

Did you figure out how to show the circles on top of a uiimage?

[arisha mehar]

Hey... i'm facing the same issue.. did u figure out thi issue or not...?

[arisha mehar]

Or any alternate method u've used to visuaize circles? plzz tell me

[Hasaan Ijaz]

I couldn't figure out how to use the viscircles but the rectangle function can do the same job.

By using the following for loop you will ensure that all detected circles are highlighted/filled

circlesize = 15;

cs = circlesize;

for i=1:max(size(centers))

rectangle('Parent', axisofinterest,'Position',[centers(i,:) -cs cs cs], 'Curvature',[1,1]);

end

This should work. You will obviously have to tweak the positioning parameters. Still, the viscircles is more desirable bcz its faster. If you figure out to incorporate viscircles, lemme know.