Re: [postgis-users] Postgres Polygon to Postgis Geometry

2010-10-27 Thread Wagner Santos
Mike, Thanks! On Wed, Oct 27, 2010 at 1:17 AM, Mike Toews wrote: > Ah, you are looking for this: > > http://postgis.refractions.net/docs/ST_Transform.html > > So you need to cast your object as a polygon, set the SRID to your > projected coordinate system (I'm just guessing SRID=29181 for your >

Re: [postgis-users] Postgres Polygon to Postgis Geometry

2010-10-26 Thread Mike Toews
Ah, you are looking for this: http://postgis.refractions.net/docs/ST_Transform.html So you need to cast your object as a polygon, set the SRID to your projected coordinate system (I'm just guessing SRID=29181 for your example http://spatialreference.org/ref/epsg/29181/ .. look up the SRID for you

Re: [postgis-users] Postgres Polygon to Postgis Geometry

2010-10-26 Thread Wagner Santos
Mike, Yes, I mean georeferenced (sorry for my English). I made a cast to text and converted to postgis geometry, but I couldn't use ST_SetSRID. I would like to tranfer a polygon to correct position. I have a Polygon "BOX(743295.3125 7182512.5,744414.75 7183817.5)" and I like to transfer it to "BOX(

Re: [postgis-users] Postgres Polygon to Postgis Geometry

2010-10-26 Thread Mike Toews
Hi Wagner, I'm not sure what you mean by "geo" and "non-geo" .. you mean georeferenced, like longitude/latitude? For points, you can keep thing binary and just use ST_MakePoint(x,y). And to assign a coordinate system, use it with ST_SetSRID: SELECT ST_SetSRID(ST_MakePoint(p[0], p[1]), 4326) from

Re: [postgis-users] Postgres Polygon to Postgis Geometry

2010-10-26 Thread Wagner Santos
I created a Postgis Geometry from Postgres Polygon converting them from string and using linefromtext to create a geometry but this information isn't geo. I have non geo points and I want to convert to my correct position and set SRID, for example P(70 72) to P(-54 -25), how can I do this? Thanks