ILAN BENISTY wrote:
Hi,
I am dealing with a problem where I am importing an AutoCAD
description of an airport (DXF) into PostGIS.
I have a Python script which will import each coordinate to a PostGIS
geometry with SRID = -1 (since I do not have real world coordinates,
but Cartesian coordinates from a point of origin).
I do, however, have a lat/long reference point, which represents the
origin of my x/y CAD coordinates.
I would like to be able to store my CAD coordinates points as Long/Lat
(SRID=4326).
Any suggestions?
Thanks,
Ilan
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What country is the site in? What units are used for the drawings grid?
Do you know the geographic datum?
It may require a fair amount of pre-processign before the data can be
accurately (de)projected to LatLong.
Once the details of the drawing grid are known, there is a python
wrapper for Proj4 which could be used to (de)project the points on the
way into the database.
Eric
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