when i push a button i want to load image on axes in GUI. so i tried this.

Question

misbah 0332 2016-2-20

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https://ww2.mathworks.cn/matlabcentral/answers/269121-when-i-push-a-button-i-want-to-load-image-on-axes-in-gui-so-i-tried-this

评论： misbah 0332 2016-2-21

   function pushbutton2_Callback(hObject, eventdata, handles)
  k=zeros(100,99);
  z=imshow(k);
  imshow(z, 'Parent', handles.axes1);

*also tried this

function pushbutton2_Callback(hObject, eventdata, handles)
k=zeros(100,99);
imshow(k, 'Parent', handles.axes1);

but still nothing appears on axes1

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Answer 1

Image Analyst 2016-2-21

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https://ww2.mathworks.cn/matlabcentral/answers/269121-when-i-push-a-button-i-want-to-load-image-on-axes-in-gui-so-i-tried-this#answer_210622

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The problem is you were calling imshow to display the image, but then immediately after that you display only the handle ID, which is a single value. Don't do that.

Just do this:

imshow(k, 'Parent', handles.axes1);

Don't call imshow() twice.

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Image Analyst 2016-2-21

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Doing this

k=zeros(100,99);
imshow(k, 'Parent', handles.axes1);

will display a black rectangle. Is that what you were expecting?

misbah 0332 2016-2-21

yes, thanks

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Answer 2

Stalin Samuel 2016-2-20

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https://ww2.mathworks.cn/matlabcentral/answers/269121-when-i-push-a-button-i-want-to-load-image-on-axes-in-gui-so-i-tried-this#answer_210544

GUI.m

Refer the example file attached

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misbah 0332 2016-2-20

i tried this but not working, can you please provide code that will written in call back of pushbutton, by pressing that button image display on axes

Walter Roberson 2016-2-20

编辑：Walter Roberson 2016-2-20

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The "function [] = callme(varargin)" is that code. However, it really should be passed S.ax so it can know where to display.

function [] = GUI()
SCR = get(0,'Screensize');  % Get screensize.
S.fh = figure();
S.ax = axes('units','pixels',...
            'position',[50 100 300 230]);
S.tg(1) = uicontrol('style','toggle',...
                    'units','pixels',...
                    'position',[5 355 60 40],...
                    'string','click here',...
                    'val',1,'callback',{@callme, S.ax});
function [] = callme(src, event, ax)
k = rand(100,99);
imshow(k, 'Parent', ax);