Use ActionPostCallback on zoom object causing IuserException.

I am currently trying to write a script which executes a function on zoom. This is just a simple test from me.

mapFigure = figure();
plot(x,y);
zoomObj = zoom(mapFigure);
zoomObj.ActionPostCallback = @(zoomObject, evd) newRenderImage(zoombOject,evd);
zoomObj.Enable = 'on';

And I call this from an livescript

myFig = getMyFigure(x,y);

This is the error it produces

Error in matlab.ui.internal.componentframework.WebControllerFactory/create (line 92)
                checkPreconditions( obj, component, parentController, nargin );]
MathWorks::System::IUserException [Error using matlab.ui.internal.componentframework.WebControllerFactory/checkPreconditions (line 45)
Invalid superclass name.

Anyone has a workaround for this problem?

Answer 1

[Mario Malic]

Morning,

Looks like issue might be with this letter

@(zoomObject, evd) newRenderImage(zoombOject,evd);
%                                     ^

[Tobias Stängle]

If i try it in a normal matlab scrip it works. Trying it in a live script cauises this error:

Error in matlab.ui.internal.componentframework.WebControllerFactory/create (line 92)
                checkPreconditions( obj, component, parentController, nargin );]
MathWorks::System::IUserException [Error using matlab.ui.internal.componentframework.WebControllerFactory/checkPreconditions (line 45)
Invalid superclass name.

[Mario Malic]

Documentation of

doc matlab.ui.internal.componentframework.WebControllerFactory/Create
Number of input arguments to the "createController" function is 3.

I would suggest to go into debugging mode and see the differences between the livescript and script, so you can check the issue yourself. There might be some unexpected differences between the two. I haven't used livescript so can't really address the issue.

One of these probably cause the issue: obj, component, parentController. Probably the last one.

Hint on the

zoomObj.ActionPostCallback = @(zoomObject, evd) newRenderImage(zoombOject,evd);

You should check how the original ActionPostCallback works. Your anonymous function might not have access to usual