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

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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

Akzeptierte Antwort

Mohammad Abouali
Mohammad Abouali am 19 Sep. 2014
Bearbeitet: Mohammad Abouali am 19 Sep. 2014
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 Kommentare
Nisreen Sulayman
Nisreen Sulayman am 19 Sep. 2014
I want to get ride of the white
frame in the image and save only the image
Mohammad Abouali
Mohammad Abouali am 26 Sep. 2014
Bearbeitet: Mohammad Abouali am 26 Sep. 2014
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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Weitere Antworten (3)

Francesco Ciriello
Francesco Ciriello am 20 Nov. 2019
Save current figure
imwrite(getframe(gcf).cdata, 'myfilename.png')
Save current axis
imwrite(getframe(gca).cdata, 'myfilename.png')
  1 Kommentar
Raviteja Vangara
Raviteja Vangara am 12 Mai 2020
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 am 18 Sep. 2014
If you want to save in with your hands - just click file-> save figure.
  1 Kommentar
Nisreen Sulayman
Nisreen Sulayman am 18 Sep. 2014
I have about 30 figure ...
I want to use MATLAB commands to save them in for loop

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Image Analyst
Image Analyst am 18 Sep. 2014
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 Kommentare
Nisreen Sulayman
Nisreen Sulayman am 19 Sep. 2014
Bearbeitet: Nisreen Sulayman am 19 Sep. 2014
Thank you how to save them to specific folder(path)using MATLAB command?
Image Analyst
Image Analyst am 19 Sep. 2014
Just use fullfile() when you construct the file name that you pass in to export_fig().

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