I'm looking at the geos API and I don't undestand what units are the
distance parameters supposed to be..
I'm trying to use buffer, to create a 1km circle around a Point
defined in SRID=22186, and.. I have no clue how to do this.
Thanks
Tomas
--
The whole of Japan is pure invention. There is
On Fri, Aug 26, 2011 at 9:50 AM, Tomas Neme lacrymol...@gmail.com wrote:
I'm looking at the geos API and I don't undestand what units are the
distance parameters supposed to be..
I'm trying to use buffer, to create a 1km circle around a Point
defined in SRID=22186, and.. I have no clue how to
Hi Tomas,
All the GEOS operations are done in a unitless Cartesian space.
Distance is unitless. For example, the distance between a point at (0,
0) and (1, 1) is sqrt(2). 22186 has units of meters, right? As long as
your distances are in meters (1000 in your case), you'll be fine.
I thought
Tomas,
If you dig into one of the representations, such as well known text as HTML
you can see the units. In the WKT it is:
PROJCS[POSGAR 94 / Argentina 6,
GEOGCS[POSGAR 94,
DATUM[Posiciones_Geodesicas_Argentinas_1994,
SPHEROID[WGS 84,6378137,298.257223563,
If you dig into one of the representations, such as well known text as HTML
you can see the units. In the WKT it is:
...
UNIT[metre,1, * UNITS *
=D
thanks
--
The whole of Japan is pure invention. There is no such country, there
are no such people
