Save just image (and not full figure) in a loop without needing user input

Hi all,

I'm working on a program which generates lots of figures/images in a for-loop. As I want to creat up to 1000 images I would like to avoid any user input when saving the images (I just want the program to run).

My problem is that I do only want to save the image and not the full figure. With imsave I can save an image (after being asked to specify the file-name myself for each loop), with saveas I can save all figures withtout user input (just with an updated string) but not just the image. How could I combine this so that I end up with a command which saves just a (tiff)-image from the generated plot/figure without needing a user input every time?

My code for the loop is as follows (with lcn as given 3D array):

for slice = 1:100; h = imagesc(squeeze(lcn(slice,:,:))); name = num2str(slice) saveas(h,slice,'tif') end

/David

Answer 1

[Sean de Wolski]

h is a handle to the figure and a scalar value. What you want is

 for ...
   name = ...
   imwrite(squeeze(lcn(slice,:,:)),name,'tif');
 end

Answer 2

[Laura Proctor]

Try IMWRITE:

http://www.mathworks.com/access/helpdesk/help/techdoc/ref/imwrite.html

[David]

Dear Laura,

I tried to implement imwrite but I'm just getting blank images. Do you know what I could be doing wrong?

Ex:

for slice = 1:100;

h = imagesc(squeeze(lcn(slice,:,:)));

string = num2str(iter);

string2 = '.tif'

name = [string string2];

imwrite(h,name,'tif')

end

Answer 3

[David]

Sorry, but I'm just inserting my comment as an answer to keep the discussion going. Thanks again. /David ----------------------------------------------------- Dear Laura,

I tried to implement imwrite but I'm just getting blank images. Do you know what I could be doing wrong?

Ex:

for slice = 1:100; h = imagesc(squeeze(lcn(slice,:,:))); string = num2str(iter); string2 = '.tif' name = [string string2]; imwrite(h,name,'tif') end

/David

Answer 4

[David]

Well, the answer was actually as simple as that! imagesc is a handle to the figure or image being plotted!

Using your solution Sean works perfectly fine! Thanks for all the help!

All the best /David

[Jan]

Does this mean, that you accept his answer? Then please hit the corresponding button to mark this question as solved.