[Gdal-dev] Should These Maps Be Aligned?

[Mateusz Loskot]

Kent Eschenberg wrote:
> I converted the relief map from its Lambert projection to geographic
> (i.e., longitude and latitude) with gdalwarp. As far as I can tell the
> roads already use that projection. No prj file came with the roads but
> the included text file has this section:
> 
> ===
> Spatial_Reference_Information:
>   Horizontal_Coordinate_System_Definition:
>     Geographic:
>       Latitude_Resolution: 0.000278
>       Longitude_Resolution: 0.000278
>       Geographic_Coordinate_Units: Decimal degrees
>     Geodetic_Model:
>       Horizontal_Datum_Name: North American Datum of 1983
>       Ellipsoid_Name: GRS1980
>       Semi-major_Axis: 6378137
>       Denominator_of_Flattening_Ratio: 298.257222
> ===
> 
> I wrote a C++ program that with the gdal/ogr library reads these then
> writes them in the VTK XML format.

Kent,

I don't know what's the VTK XML format, but AFAIK it's not
supported by OGR.

> These can then be used by a
> scientific visualization program (ParaView) where we are also displaying
> earthquake simulation results. I could have made an error, of course.
> 
> Is there some non-commercial software I could run on Linux to display
> the road and relief maps together to check whether they are aligned?

What about Quantum GIS, http://www.qgis.ogr

Cheers
-- 
Mateusz Loskot
http://mateusz.loskot.net