Re: Annular Region of Interest

Posted by Graham Arden on Jul 26, 2009; 9:21am
URL: http://imagej.273.s1.nabble.com/Annular-Region-of-Interest-tp3691656p3691658.html

Wayne Rasband wrote:

>
> You can create a ring-shaped selection by using the elliptical
> selection tool twice, first to create the outer boundary and then,
> with the alt key down, to create the inner boundary. You can also
> create one by using the Edit>Selection>Make Band command. There is an
> example macro at
>
>    http://rsbweb.nih.gov/ij/macros/examples/AnnularSelection.txt
>
> that uses both methods.
>
> When creating elliptical selections, you can force them to be circular
> by holding down the shift key.
>
> -wayne

Thanks Wayne for your reply., and also Johannes and Gabriel for their
helpful points.

Graham