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Image Processing in GUI Error

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i am working on Zooming of Image in MATLAB GUI
i have sucessfully loaded image in MATLAB GUI but when i try to zoom it it gives error mentioned below
Error in>@(hObject,eventdata)test('pushbutton2_Callback',hObject,eventdata,guidata(hObject))
Error while evaluating UIControl Callback

Accepted Answer

Geoff Hayes
Geoff Hayes on 26 Jun 2020
Muhammad - please post the full error message (so all of the red text) so we can narrow down which line of the callback is generating the error.
Is it that the A is not defined? (Instead of using global variables, save the image (once loaded) to the handles structure which this callback then use to access the image.)
More likely, the error has to do with f1 variable which is being used as the step size in the two for loops....but it hasn't yet been defined. Please define this variable (again consider using the handles structure if this is set elsewhere in the code).
  1 Comment
Muhammad Awais saleem
Muhammad Awais saleem on 26 Jun 2020
thanks for answering sir
yeah first error was undefined f1 function
and second i went through as you said it now solved thanks a lot

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