How to do image rotation in matlab?

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Nimra Azmat
Nimra Azmat 2019-6-23
评论： Rik 2020-10-30
How to make gui for image rotation.i need the code to get image rotated at every time i press pushbutton when i upload an image.
a=getappdata(0,'a');
aclock=a;
aclock=imrotate(aclock,270);
axes(handles.axes1);
imshow(aclock);
  2 个评论
Rik
Rik 2019-6-23
This code looks like it should work. What is your question? What isn't this code doing that you want it to do?
Rik
Rik 2019-6-23
Comment mistakenly posted as answer by Nimra Azmat:
it only rotate the image once and when i move it on the other angle (anticlock) it process the orignal image i want my code to change the orginal image and change it according to button press on any command

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采纳的回答

Rik
Rik 2019-6-23
It is a bit strange to store your image with getappdata on the graphics root, instead of with guidata. You will also notice that you aren't actually saving the result anywhere, so the function you've written only rotates the original image.
If you want to rotate the image in every callback, you need to store your image back somewhere, so in your case something like this should work:
a=getappdata(0,'a');
aclock=a;
aclock=imrotate(aclock,270);
axes(handles.axes1);
imshow(aclock);
setappdata(0,'a',aclock)

更多回答（1 个）

NAJMA FAYAZ
NAJMA FAYAZ 2020-10-30
Try This
global a
a=imrotate(a,270);
axes(handles.axes1);
imshow(a);
  1 个评论
Rik
Rik 2020-10-30
I admit that I should have been more vocal about storing data in the appdata of the groot (instead of the GUI figure), but a global is definitely worse.
For future edits: you can find a sandbox and instructions for the editor here.

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