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how to save the content of the current figure as an image?

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Nisreen Sulayman
Nisreen Sulayman 2014-9-18
评论： Raviteja Vangara 2020-5-12
how to save the content(which is an image) of the current figure as an image?
I have about 30 figure ...
I want to use MATLAB commands to save them in for loop

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采纳的回答

Mohammad Abouali
Mohammad Abouali 2014-9-19
编辑：Mohammad Abouali 2014-9-19
saveas(gcf,'filename.png')
would also work.
or something like this
for i=1:30
% code to show image number i
saveas(gcf,['filename' num2str(i) '.png']);
end
if you don't like the border around it type:
iptsetpref('ImshowBorder','tight');
before preparing your figure.
  3 个评论
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Mohammad Abouali
Mohammad Abouali 2014-9-26
编辑：Mohammad Abouali 2014-9-26
Cool image. What are these? blood stream?
Anyway, so you can use fullfile() command. Something like this should work
DirectoryPath ='C:\Mystorage\myImages';
whereToStore=fullfile(DirectoryPath,['filename' num2str(i) '.png']);
saveas(gcf, whereToStore);
If you wanna make it more fancy you can have the user select the folder through a GUI like this
DirectoryPath = uigetdir();
if DirectoryPath~=0
whereToStore=fullfile(DirectoryPath,['filename' num2str(i) '.png']);
saveas(gcf, whereToStore);
end

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更多回答（3 个）

Francesco Ciriello
Francesco Ciriello 2019-11-20
Save current figure
imwrite(getframe(gcf).cdata, 'myfilename.png')
Save current axis
imwrite(getframe(gca).cdata, 'myfilename.png')
  1 个评论
Raviteja Vangara
Raviteja Vangara 2020-5-12
I think this deserves an upvote. I have an image with alpha data, and traditional saveas options wouldnt store alpha data in saved PNG file.
using,
H = getframe(gca)
imwrite(H.cdata, 'myfilename.png')
This saves current figure as it appears on the window.

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Mikhail
Mikhail 2014-9-18
If you want to save in with your hands - just click file-> save figure.
Or use http://www.mathworks.com/help/matlab/ref/imwrite.html in your programm
Image Analyst
Image Analyst 2014-9-18
Use imwrite() if you just want to save the image you display. If you want to save the axes or figure, use export_fig(). http://matlab.wikia.com/wiki/FAQ#How_do_I_save_my_figure.2C_axes.2C_or_image.3F_I.27m_having_trouble_with_the_built_in_MATLAB_functions.
  2 个评论
Nisreen Sulayman
Nisreen Sulayman 2014-9-19
编辑：Nisreen Sulayman 2014-9-19
Thank you how to save them to specific folder(path)using MATLAB command?
Image Analyst
Image Analyst 2014-9-19
Just use fullfile() when you construct the file name that you pass in to export_fig().

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