MATLAB: Select an image inside a figure

Question

Hello everyone I have to select one image within a figure (in which there are 4 pictures) and save the result. Can anyone help me? Thanks a lot F

Answer 1

something like this can be implemented.

function interactiveplot()
    % 4 images
    hax(1)=subplot(2,2,1);imagesc(rand(20,10)); title('image1')
    hax(2)=subplot(2,2,2);imagesc(rand(30,20));title('image2')
    hax(3)=subplot(2,2,3);imagesc(rand(40,30));title('image3')
    hax(4)=subplot(2,2,4);imagesc(rand(50,40));title('image4')
      % create a context menu (right click)
      for ind=1:length(hax)
          hcmenu(ind) = uicontextmenu;
          set(hax(ind),'userdata',ind); %tag which subplot is which 
          %create the save listing in the context menu, passing it the
          %callbackfunction savesub to save with the associated subplot
          %handle
          item = uimenu(hcmenu(ind),'Label','save subplot','Callback',{@savesubs hax(ind)});
          %set what the context menue will be assigned to.
  %         set(hax(ind),'uicontextmenu',hcmenu(ind))  %not sure if needed
  %         seems to work without it
          set(get(hax(ind),'children'),'uicontextmenu',hcmenu(ind)) 
      end
  end
%function that does the saving
function savesubs(h,event,hax)
    %figure out where and what you want to call the image
    [file folder] = uiputfile('*.jpg');
    %create new figure to display.  if not all subplots will be saved
    hfig = figure;
    hax_new = copyobj(hax, hfig);
    set(hax_new, 'Position', get(0, 'DefaultAxesPosition'));
    %save the copied plot as a jpg.
    saveas(hfig,file,'jpg')
    %close the new plot 
    close(hfig);
end