[mapserver-users] Maximum number of points in a poligon

Sebastian E. Ovide sebastian.ovide at gmail.com
Wed Oct 27 09:20:54 EDT 2010


Do you spliited the polygons manually or you have some script ? perhaps
using gdal ?

On Wed, Oct 27, 2010 at 1:36 PM, Rahkonen Jukka
<Jukka.Rahkonen at mmmtike.fi>wrote:

>  Hi,
>
> All I can say is that with our data the service went all to slow for the
> end users long before jamming.  We have been splitting the biggest lake
> polygons into pieces with no more than 45000 vertises because that was the
> limit of reasonable speed in our environment.  But in that case the limiting
> factor was the database and "contains" queries, not Mapserver.  Anyhow,
> splitting the lakes was good for Mapserver too.  For some other layers we
> have made simplified versions for the far-away zooms. Simplifying is better
> for WMS use if polygons are drawn with different outline colour but it gives
> a bit more work with building the scale dependent layers.
>
> -Jukka Rahkonen-
>
>  ------------------------------
> *Lähettäjä:* mapserver-users-bounces at lists.osgeo.org [mailto:
> mapserver-users-bounces at lists.osgeo.org] *Puolesta *Sebastian E. Ovide
> *Lähetetty:* 27. lokakuuta 2010 14:57
> *Vastaanottaja:* mapserver-users at lists.osgeo.org
> *Aihe:* [mapserver-users] Maximum number of points in a poligon
>
> Hi All,
>
> I have a shape with 2M polygons. The biggest one has 13k points. It works
> very well, and fast enough.
>
> I have another shape with 300k polygons and the biggest one has 800k
> points... This shape hangs MapServer !... and I have to kill the process by
> hand using kill -9. (see the other thread: process survive after killing
> apache). The shape files can be opened with ogrinfo though
>
> Is there a maximum number of points for single polygon supported by
> MapServer ?
>
> Thanks
> --
> Sebastian E. Ovide
>
>
>


-- 
Sebastian E. Ovide
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