There could be better solutions but the one that comes to my mind is the following.

If you sample your polar plot densely enough, the you can use patch. It will not be an exact fill but it may look almost filled.

Please do

help patch

Best.

"yaya yoyo" < XXXX@XXXXX.COM > wrote in message <hljg5a$qd3$ XXXX@XXXXX.COM >...

> Hello all,

> I want to fill in part of the circle in a polar plot but don't know exactly how to do so?

> Specifically, I measured the head direction of an animal and computed the preferred head direction. Which I represent using a polar plot. In addition to this I want to show the confidence interval for my measure (which I also already computed) . The way I wanted to do so, was to highlight this area of the polar plot some how,

> In regular plots I can do this using functions such as area and others, but I have no idea how I can do this in the polar plots and would appreciate you help,

> Thank you