why ''regioprops area'' doesn't work?

i have an image B as below http://tinypic.com/view.php?pic=2aaek9c&s=5#.Utm_VBBYkdU and i label it, becase i want to find the area of each line separately. but when i write B2=bwlabel(B) stats=regionprops(B2,area) it returs '' Error using area (line 42) Must supply Y data or X and Y data as first argument(s).'' can somebody tell me what is wrong? thanks a lot!

[Bruno Pop-Stefanov]

Could you please attach the original image to your question?

[Bruno Pop-Stefanov]

Also, you have to write the property you want to extract in quotes:

stats = regionprops(B2, 'Area');

Answer 1

[Image Analyst]

Look at the documentation for regionprops(). The first arg is the binary or labeled image. The second one can either be a string such as 'area', or a grayscale image. Since you did not put area in quotes, it's assuming that it is a grayscale image, which it most likely is not. Put area in single quotes and you should probably be fine.

[maria]

thanks it worked :)