Problem writing images when GUI and Figure are open at the same time

1 次查看（过去 30 天）
Julian
Julian 2018-9-14
评论： Julian 2018-9-17
Hi everyone,
i'm having a little trouble writing images.
I have a GUI which runs some analyzes on images. At some point i want to plot some markers into an image and save it afterwards. The code for this goes like this:
figure_handle = figure;
set(figure_handle,'Visible','off');
if(cboxchecked(handles.mergecbox))
try
imshow(handles.mergedimg);
title(['# cells: ', numberOfCells]);
hold on
plot(centroidCoordinates(:,1), centroidCoordinates(:,2), ...
'go','MarkerSize',7,...
'MarkerEdgeColor','b',...
'LineWidth',2,...
'MarkerFaceColor','g');
catch
warning('No merged image available');
end
end
saveas(figure_handle,[savingName],'png')
So i actually don't want the figure to pop up, so i set the visibility off. But when i do, the plot and title won't be in the figure that i am saving afterwards. If i switch the visibility on i don't have this problem but still i got some issues. I only get the results i want if i slowly step through the code and make sure the figure is always in the foreground. But when i simply run it, my GUI (with the original image that was uploaded) will normally be displayed in the foreground and then the plot will only appear in the GUI. Is there something i can do to fix this? Thanks a lot!
  4 个评论
显示 2更早的评论
Julian
Julian 2018-9-14
No, still the same problem. If the GUI is in the foreground, the plot will be displayed in there.

请先登录，再进行评论。

请先登录，再回答此问题。

采纳的回答

OCDER
OCDER 2018-9-14
Always specify which axes you are drawing to. Also, use print instead of saveas to get the desired resolution.
figure_handle = figure;
axes_handle = axes; %<=== track the axes handle
set(figure_handle,'Visible','off');
if(cboxchecked(handles.mergecbox))
try
imshow(handles.mergedimg, 'parent', axes_handle); %<==== specify axes handle to use
title(['# cells: ', numberOfCells]);
hold on
plot(axes_handle, centroidCoordinates(:,1), centroidCoordinates(:,2), ... %<=== specify axes
'go','MarkerSize',7,...
'MarkerEdgeColor','b',...
'LineWidth',2,...
'MarkerFaceColor','g');
drawnow(); %<=== refresh image
catch
warning('No merged image available');
end
end
%Make sure to setup the figure PaperPosition, Position, etc
print(figure_handle, sprintf('%s.png', savingName), '-dpng', '-r600')
  2 个评论
Walter Roberson
Walter Roberson 2018-9-15
I would go further to
figure_handle = figure;
axes_handle = axes('Parent', figure_handle); %<=== track the axes handle
set(figure_handle,'Visible','off');
if(cboxchecked(handles.mergecbox))
try
imshow(handles.mergedimg, 'parent', axes_handle); %<==== specify axes handle to use
title(axes_handle, ['# cells: ', numberOfCells]);
hold(axes_handle, 'on')
plot(axes_handle, centroidCoordinates(:,1), centroidCoordinates(:,2), ... %<=== specify axes
'go','MarkerSize',7,...
'MarkerEdgeColor','b',...
'LineWidth',2,...
'MarkerFaceColor','g');
drawnow(); %<=== refresh image
catch
warning('No merged image available');
end
end
%Make sure to setup the figure PaperPosition, Position, etc
print(figure_handle, sprintf('%s.png', savingName), '-dpng', '-r600')

请先登录，再进行评论。

更多回答（0 个）

类别

在 Help Center 和 File Exchange 中查找有关 Printing and Saving 的更多信息

标签

产品


版本

R2018a

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by