only saving last image

Question

HYZ 2022-9-1

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1793255-only-saving-last-image

编辑： HYZ 2022-9-3

hi, this is my code. Figures are plotted correctly but only the last " i " image was saved for all iterations. Please advise which part was wrong. thanks.

for m = 1: size (OSI,1)
    if OSI (m) > 0.5       
for i = 1: size (trial_trace,3)
   p(i) = figure (i);
   for j = 1:5  
       subplot(5,1,j)
        for k = 1:8    
            if j ~= 5
                plot (trial_stimstarts_reset(j,k):trial_stimends_mod_reset(j,k), trial_trace{j,k,i})
                ylabel(sprintf('Trial %d', j))
                if j == 1
                title (sprintf('ROI %d: OSI %0.2f DSI %0.2f', m, OSI(m), DSI (m))) 
                end
            elseif j == 5
                plot (trial_stimstarts_reset(1,k):trial_stimends_mod_reset(1,k), trial_trace_avg{1,k,i}) 
                ylabel('Average')
            end
            hold on
        end
   end
end
cd(path_stim_all{itr})  
saveas (p(i),strcat('trace_','ROI', '_', num2str(m), '_', 'OSI', '_', num2str (OSI(m)), 'DSI', '_', num2str (DSI(m)), '.jpeg'));
    end
end

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Answer 1

Image Analyst 2022-9-2

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1793255-only-saving-last-image#answer_1040305

saveas() needs to be inside the loop over i. Right now it's between the end of the i loop but before the end of the m loop.

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HYZ 2022-9-2

在 MATLAB Online 中打开

I ran your code. I got back the below error.

for m = 1: size (OSI,1)
    if OSI (m) > 0.5 
for i = 1: size (trial_trace,3)
   p(i) = figure;
   
   for j = 1:5  % 4trials + average trial  
    subplot(5,1,j)
        for k = 1:8    % direction
            if j ~= 5
                plot (trial_stimstarts_reset(j,k):trial_stimends_mod_reset(j,k), trial_trace{j,k,i},'-k')
                 a = trial_stimstarts_reset(1,k) ; 
                 c = min(cell2mat(trial_trace(j,:,i)));  d = max(cell2mat(trial_trace(j,:,i))); 
                 patch([a a+10 a+10 a], [c c d d],[.75 .75 .75],'FaceAlpha',0.3, 'Edgecolor', 'none')
                 ylabel(sprintf('Trial %d', j))
                 hold on
                
            elseif j == 5
                plot (trial_stimstarts_reset(1,k):trial_stimends_mod_reset(1,k), trial_trace_avg{1,k,i},'-k') 
                 a = trial_stimstarts_reset(1,k) ; 
                 c = min(cell2mat(trial_trace_avg(:,:,i)));  d = max(cell2mat(trial_trace_avg(:,:,i))); 
                 patch([a a+10 a+10 a], [c c d d],[.75 .75 .75],'FaceAlpha',0.3, 'Edgecolor', 'none')
                ylabel('Average')
                xlabel('#frames')
                hold on
            end  
          hold on   
        end
   end 
cd(path_stim_all{itr})
fileName = sprintf('trace_ROI_%2.2d_OSI_%2.2d DSI_%2.2d.jpg', m, OSI(m), DSI(m));
fprintf('For i=%d and m=%d, Saving "%s".\n', i, m, fileName);
exportgraphics(gcf, fileName);
end   
    end   
end
 

For i=1 and m=1, Saving "trace_ROI_01_OSI_5.25e-01 DSI_5.84e-01.jpg".

For i=2 and m=1, Saving "trace_ROI_01_OSI_5.25e-01 DSI_5.84e-01.jpg".

For i=3 and m=1, Saving "trace_ROI_01_OSI_5.25e-01 DSI_5.84e-01.jpg".

Error using exportgraphics

The value of 'destination' is invalid. Unable to create output file 'trace_ROI_01_OSI_5.25e-01 DSI_5.84e-01.jpg', Permission

denied.

Error in sandbox04 (line 156)

exportgraphics(gcf, fileName);

HYZ 2022-9-2

编辑：HYZ 2022-9-2

在 MATLAB Online 中打开

yes. The filename is not supposed to have i and only encoded into m.

It saved all images for i = 8. basically, it saved only the last i for different m. I put the code before the last two ends.

If I don't save images, the displayed matlab images showed the correct figures. only when I tried to save, same images were saved.

end   
cd(path_stim_all{itr})
fileName = sprintf('trace_ROI_%0.2f_OSI_%0.2f DSI_%0.2f.jpg', m, OSI(m), DSI(m));
fprintf('For i=%d and m=%d, Saving "%s".\n', i, m, fileName);
exportgraphics(gcf, fileName);
    end   
end