Problems displaying a very large polygon

[Frederico Lucca]

Mark,

Thanks for the explanation, but in this case why some sections of the
polygon are processed faster than others?

Best regards,

Fred

On 5/4/06, Mark Leslie <mark at refractions.net> wrote:
>
> Fred,
> The problem with large polygons like this is that loading a small
> section like you're doing still requires the entire polygon to be
> processed.
> One solution is to break the polygon into tiles closer to the size you
> intend to display. This way the indexes can be used more effectively,
> and only the areas you're displaying needs to be processed.
> Mark
>
> Frederico Lucca wrote:
> > Hello list,
> >
> > I have a layer with a single polygon, but it has 131570 points. It's the
> > territory from brazil.
> > When I try to export a gif showing only a small piece, like 1/30 from
> the
> > total, this spends 30 seconds (attached).
> > I observe that when the coast is more irregular this is slower to
> export.
> > Other layers are very quick to export, something like 1 or 2 second.
> > How I can deal with this problem?
> >
> > Thanks in advance.
> >
> > Fred
> >
> > --
> > "Everything under the sun is in tune
> > But the sun is eclipsed by the moon"
> >
> >
> > ------------------------------------------------------------------------
> >
>
>


--
"Everything under the sun is in tune
But the sun is eclipsed by the moon"
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://lists.osgeo.org/pipermail/mapserver-users/attachments/20060504/3feec0e9/attachment.html