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

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

Answer 1

[Mohammad Abouali]

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.

[Nisreen Sulayman]

Thank you , But how to save them to specific folder(path)

[Nisreen Sulayman]

I want to get ride of the white

 frame in the image and save only the image

[Mohammad Abouali]

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

Answer 2

[Francesco Ciriello]

Save current figure

imwrite(getframe(gcf).cdata, 'myfilename.png')

Save current axis

imwrite(getframe(gca).cdata, 'myfilename.png')

[Raviteja Vangara]

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.

Answer 3

[Mikhail]

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

[Nisreen Sulayman]

I have about 30 figure ...

I want to use MATLAB commands to save them in for loop

Answer 4

[Image Analyst]

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.

[Nisreen Sulayman]

Thank you how to save them to specific folder(path)using MATLAB command?

[Image Analyst]

Just use fullfile() when you construct the file name that you pass in to export_fig().