Re: polygon error

Dear DONG LI,

It's possible that you are running into a different problem. Can you
provide us with a short NCL script that shows the problem so we can
run it here?

Thanks,

--Mary

On Nov 14, 2010, at 7:56 AM, DONG Li wrote:

> Dear all,
>
> I want to display a Voronoi diagram on the sphere, and each cell has
> a value. So I need to plot a lot of filled polygons. But I observed
> that some polygons have been wrongly filled, that is the entire map
> has been filled except the polygons! I searched out the mail list,
> and found some one has already encountered such problem:
>
> http://www.ncl.ucar.edu/Support/talk_archives/2009/0109.html,
>
> and "Mary Haley" said "This problem has been fixed and will be in
> the 5.1.0 release. It had
> to do with floating point precision in some low-level map code." But
> I am using 5.2.1, why such a problem still exist? The following are
> an example of problematic polygon:
>
> -127.338600 -87.929138
> -146.644073 -86.213120
> 179.307693 -85.080284
> 144.447769 -85.944191
> 112.320877 -87.895256
> -127.338600 -87.929138
>
> Thanks for help!
>
> DONG Li
>
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Received on Sun Nov 14 15:21:30 2010