[postgis-users] What does this mean? assvg(...) ==> "M 10 4.1 -30.8 l 0 -0 0 -0 0 -0 -0 -0 -0 -0 -0 -0 0 -0 "

[TECHER David]

Hi Alex

What version of PostGIS do U use?

alex_chew a écrit :
> Hi,there
>  I tried to load all road polylines in box 104,30,106,32(EPSG:4326) 
> with sql:
> SELECT AsSVG(intersection(the_geom,GeometryFromText('POLYGON((104 
> 30,106 30,106 32,104 32,104 30))',4326)),1,1) AS svg_geom FROM 
> road_polyline WHERE the_geom && setSRID('BOX3D(104 30, 106 
> 32)'::box3d,4326)
>
> I got some results like,
> "M 104.1 -30.8 l 0 -0 0 -0 0 -0 -0 -0 -0 -0 -0 -0 0 -0 "
> "M 104.2 -30.8 l 0 0 0 0 0 0 "
> "M 104.2 -30.8 l 0 0 "
> "M 104.2 -30.8 l 0 0 0 0 "
> "M 104.1 -30.8 l 0 -0 0 -0 "
> "M 104.1 -30.8 l 0 0 0 0 "
> "M 104.2 -30.8 l 0 0 0 0 0 0 0 0 0 0 0 0 0 -0 0 0 0 0 "
> "M 104.1 -30.8 l 0 -0 "
>
> what does this mean? It should be something like,
> M 104.1 -30.8 l 104.* -30.* l p3x p3y l p4x p4y
> Why does there so many zero(0)?
>
> I cannot make it display on my SVG document.
>
> thanks in advance.
> alex
>
>
>
>
>
>
>
> ? ? ? ? ? ? ? ? ? , ? ? ? ? ? ?
> ? ? ? ? ? ? ? ? 20 ? ? , ? ? ? ? ? ? ? ? ? ? ? 20 ? >> 
> <http://adtaobao.allyes.com/main/adfclick?db=adtaobao&bid=600,597,58&cid=29985,198,1&sid=32501&show=ignore&url=http://event.mail.163.com/taobao/index.htm> 
>
> ------------------------------------------------------------------------
>
> _______________________________________________
> postgis-users mailing list
> postgis-users at postgis.refractions.net
> http://postgis.refractions.net/mailman/listinfo/postgis-users
>   

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.osgeo.org/pipermail/postgis-users/attachments/20061120/baaa4443/attachment.html>