Hi:
I'm curious about that shapefile that needs some stretching. Assuming its name
is filename.shp, try to type this:
ogrinfo -geom=NO filename.shp filename
what is the output?
Regards,
Juan Lucas
________________________________
Hello Frederik,
thanks for your hint. Yes, i know about projections. Actually,
i reprojected
the rester images of "blue marble" from a form of WGS84 to
Mercaator
with an own program.
But as i've heard it, world_boundaries_m is "defect". But as
an overlay
to represent the boundaries it would be ok. If that
information was a
misunderstanding and could be fixed with the right projection
that would be
awesome.
If i use shoreline_300 instead, the projection is perfectly
fine, but if you
try to render it _not_filled_ with a LineSymbolizer instead of a
PolygonSymbolizer, you get some disturbing "plates". But the
projection
is fine.
A ShapeFile contains the "source SRS" inside it, right? When
rendering
world_boundaries_m and shoreline_300 i used the same "target
SRS".
But the result leads to different positions on the final map.
Does that mean that world_boundaries_m is defect?
Is there a way to "fix" it somehow? Or would scaling be
possible?
Best regards,
Torsten.
> Hi,
>
> Torsten Mohr wrote:
> > I have a ShapeFile that seems to be incorrect, scaling it
in Y-direction
> > could make it fit the background.
>
> Do you have a basic understanding of coordinate projections?
If not,
> you'd be well advised to spend a few hours reading on the
subject (start
> with Wikipedia, take it from there).
>
> You need to find out which projection your shapefile is in,
and then set
> the correct one in your map file, and things are likely to
work. Simply
> stretching the data from the shapefile is very unlikely to
yield the
> desired results - you will probably find that the stretch
factor that
> makes Iceland and the Equator fit will still have France out
of place.
>
> Bye
> Frederik
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