[ronpar]

And it comes close to doing what I'd like. However....

Let me detail what I tried and see if anyone can correct my mistakes. Generate a pie chart. Get rid of the labels. Duplicate the chart. Resize one chart such that I can nest it within the other. Select the appropriate "slices" and subtract them. That should give me an arc, but it doesn't. Sometimes I can't subtract the two shapes for some reason (both selected, but option not available). Sometimes the subtraction leaves a line. Sometimes subtraction doesn't work and one of the slices is in a state that I can't select it with the mouse, but can with select all.

Typing this out, I guess I can just drop another circle in the middle to hide the lines.... But it would really be nice to set a radius and a fraction of the circle to cover.

Ron

PS An example of what I'd like to do is attached. So I can do it in omnigraffle by dropping the circle on to hide the lines.