[Proj] lat/long to northing/easting and back again
roger at opq.se
Mon Mar 16 02:43:14 EST 2009
Gee, no opinions/suggestions? Especially on the best way to convert
northings/eastings back into wgs84?
On Tue, 2009-03-03 at 07:56 +0100, Roger Oberholtzer wrote:
> I have always used proj to convert WGS84 lat/long values to
> northing/easting values in various parts of the world. In doing so, I
> usually need to interpolate between points to find specific locations.
> These interpolated locations have always been reported as
> northing/easting values in meters. Job finished.
> I now have a use where, after determining the interpolated
> northing/easting, I need to convert the location back into lat/long in
> degrees. This I have never done with proj.
> My question is, if you had to locate a position between two lat/long
> values, how would you best do this with proj? The source data in my case
> is WGS84 values from a Trimble GPS. The 'interpolated' lat/longs should
> also be reported in WGS84. In reality, the values will be collected
> throughout Germany. But everything is requested to be provided in WGS84.
> I use the C API for this. But any pointers are welcome. If I have left
> out any important detail, just ask.
> Roger Oberholtzer
> OPQ Systems / Ramböll RST
> Ramböll Sverige AB
> Krukmakargatan 21
> P.O. Box 17009
> SE-104 62 Stockholm, Sweden
> Office: Int +46 8-615 60 20
> Mobile: Int +46 70-815 1696
> Proj mailing list
> Proj at lists.maptools.org
OPQ Systems / Ramböll RST
Ramböll Sverige AB
P.O. Box 17009
SE-104 62 Stockholm, Sweden
Office: Int +46 8-615 60 20
Mobile: Int +46 70-815 1696
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