how to change axes in loops

Question

Mirza M 2014-11-25

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/164269-how-to-change-axes-in-loops

编辑： Adam 2014-11-25

i want to change axes so i can show images in different axes. here is my code

n = 13;
for m = 1:n
    for idfile = 1:indSim(m)
        if idfile < 10
               name_file = strcat('000',num2str(idfile));
        elseif idfile < 100
               name_file = strcat('00',num2str(idfile));
        elseif idfile < 1000
               name_file = strcat('0',num2str(idfile));
        else
               name_file = strcat(num2str(idfile));
        end
    end
      str_img_name = strcat(folder, name_file, '.jpg');
      returned_img = imread(str_img_name);
      axes(handles.axes(m));
      imshow(returned_img);
  end

but i've got an error like this 'Reference to non-existent field 'axes'.' how can i change axes depends on `m` in the loops?

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Answer 1

Adam 2014-11-25

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/164269-how-to-change-axes-in-loops#answer_160199

编辑：Adam 2014-11-25

在 MATLAB Online 中打开

Your axes will each have a 'Tag'. If you used Guide to create your GUI which I am guessing you did from the 'handles' usage then you will need to gather the axes handles together into an array by accessing them as e.g.

handles.hAxes = [ handles.axes1, handles.axes2, handles.axes3 ];

Then use

axes( handles.hAxes(m) )

to change axes.

Personally I favour:

imshow( returned_img, 'Parent', handles.hAxes(m) );

rather than explicitly changing the current axes with:

axes( handles.hAxes(m) )

but that should work too.