Xplo Eristotle wrote:

> I'm trying to create kind of a crescent-shaped island and I'm using an
> isosurface to do it, but I've run into kind of a strange problem: if I
> increase the size of the containing sphere, the top half of the iso
> disappears. Thing is, I don't know if this is a bug or an oversight on
> my part..

(cutting and pasting from a recent post...)
This is very probably a max_gradient problem. It has driven many people
mad before (including me). The trick is to give a proper max_gradient
value instead of relying on eval. A detailed explanation can be found here
:
http://www.econym.demon.co.uk/isotut/keywords.htm

G.
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