[FWTools] ogr2ogr shp --> kml conversion failing on some complicated polygons

[Lennox Antoine]

Can you supply one of the problematic polygon coordlist? I haven't run into
any problems with complex polygons (without holes), so I don't know what
could be the problem off hand without trying it.

-Lennox

On 4/8/07, Bryan Keith <bryan at geomega.com> wrote:
>
> Lennox,
>
> I got your suggestion to work for polygons that weren't giving me
> problems, but it did not change anything for the problematic polygons.
>
> Bryan
>
> Lennox Antoine wrote:
> > You are probably experiencing a tesselation problem. Here is a polygon
> > template I normally use for filling complex polygons in GE. Note the
> > tesselation attribute, and how to use it.
> >
> > <Polygon>
> >   <extrude>0</extrude>
> >   <altitudeMode>clampToGround</altitudeMode>
> >   <tessellate>1</tessellate>
> >   <outerBoundaryIs>
> >      <LinearRing><coordinates></coordinates></LinearRing>
> >   </outerBoundaryIs>
> > </Polygon>
> >
> > <Style>
> >   <LineStyle>
> >     <color></color>
> >     <width></width>
> >   </LineStyle>
> >   <PolyStyle>
> >     <fill>1</fill>
> >     <color></color>
> >   </PolyStyle>
> > </Style>
> >
> > -Lennox
> >
> > On 4/8/07, Bryan Keith <bryan at geomega.com> wrote:
> >> Hello,
> >>
> >> I have a shapefile with a single record, a polygon shape.  I tried
> >> attaching the shapefile to this e-mail, but the server didn't like it.
> >> I'll gladly e-mail the shapefile to anyone who's willing to look into
> >> this.  It's ~722KB.  I can convert the shapefile to kml like this:
> >>
> >> ogr2ogr -f kml testblm_py.kml testblm_py.shp
> >>
> >> When I look at the kml in Google Earth, it looks fine.  The outline of
> >> the shapefile shows up as a red line which, I guess, is the default for
> >> ogr2ogr kml output.  However, I want to see filled polygons so I
> replace
> >> part of the "style" line in the kml like this:
> >>
> >> cat testblm_py.kml | sed "s/<fill>0<\/fill>/<color>ff37d9f0<\/color>/"
> >
> >> testblmfill_py.kml
> >>
> >> The shaded area does not show up correctly in Google Earth.  It shows
> up
> >> as lots of vertical striped areas within the polygon.
> >>
> >> My actual workflow is a fair bit different from what I've described
> >> here, but I've tried to boil the problem down to a simple example.  I
> >> realize, however, that this polygon is not simple.  I'm processing over
> >> 10000 land ownership polygons in Utah, and I'm only having a problem
> >> with a few of the big, complicated polygons.
> >>
> >> I'm wondering if it might be a problem with the line length in the kml,
> >> but I'm not sure.  I'm still doing some testing.  Any ideas are
> >> appreciated.
> >>
> >> Bryan
> >>
> >> _______________________________________________
> >> FWTools mailing list
> >> FWTools at lists.maptools.org
> >> http://lists.maptools.org/mailman/listinfo/fwtools
> >> http://fwtools.maptools.org/
> >>
> >
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://lists.maptools.org/pipermail/fwtools/attachments/20070408/3ddd0bc5/attachment.html