On Thu, 15 Sep 2011 at 06:40AM -0700, kcrisman wrote:
> On Sep 15, 9:08 am, Dan Drake <dr...@kaist.edu> wrote:
> > This is strange:
> >
> > x, y =var('x y')
> > plot3d(sqrt(x^2+y^2)*sin(1/sqrt(x^2+y^2)), (x,-1/2, 1/2), (y, -1/2, 1/2),
> > adaptive=True)
> >
> > fails with "ValueError: cannot convert float NaN to integer". Something
> > goes wrong when it partitions up the domain, probably when it looks at
> > the origin. Is there a way to avoid this? Is this a bug?
>
> Or rather, very very close to the origin. I don't have time right
> now, but can you confirm that there is not a depth of recursion
> keyword like there is in 2d plotting? I would call this a bug.The docstring for plot3d has an (undocumented!) use of "initial_depth", but that didn't solve my problem. I just set plot_points=200 and that gave me something good enough; switching to cylindrical coordinates also worked, although I didn't like the look as much. Dan -- --- Dan Drake ----- http://mathsci.kaist.ac.kr/~drake -------
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