save figure in backround job

Hi,

I am running a matlab job on an external computer. Figure display is not possible. However, I would like to save figures while the job is running between. I tried the following:

(extract from the code)

for ii = 1:1:100

% ...working with Frame ...

figure('visible','off')

imshow(Frame);

print(gcf,'-dpng', ['frame' num2str(ii),'.png']);

close(figure)

end

but it doesn't work. Does anyone have an idea how to realize that? I really prefer to save the images and not to keep the data sets.

Thanks a lot in advance.

Franziska

[Sean de Wolski]

What doesn't work? Are the images not correct? Do they not appear? Does the code not run due to an error?

[Franziska]

Hi,

I receive an error message:

"{Error using imshow (line 190)

IMSHOW unable to display image.}

The reason might be the missing graphical interface although I use invisible? The problem is not the command used to save the image.

The code works fine on my PC (without displaying the figure).

Cheers,

Franziska

[Sean de Wolski]

Why not just IMWRITE?

[Franziska]

Thanks for your help!

I deleted the lines creating the figure with imshow and can use imwrite or imsave right a way.

Answer 1

[Thomas]

Your code should work.. If not try..

doc imsave

[Franziska]

Thanks for your answer. The problem is not to save the figure, it's the imshow command. I receive the following error message:

"{Error using imshow (line 190)

IMSHOW unable to display image.}

The code runs fine on my PC without showing the figure.

Cheers,

Franziksa

[Franziska]

It work's. Sorry for confusion.

If I do not create the figure but save the image directly, it's fine.

Thank's for your help.