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(-54.515022277832 -25.4530487060547,-54.5029907226562 -25.4447135925293)". I tried ST_Affine but I don't know the correct parameters, I tried ST_Scale but I had the same problem. My idea was transform and set srid.
On Tue, Oct 26, 2010 at 11:44 PM, Mike Toews <mwto...@gmail.com> wrote: > 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 ( > select point '(-123.112793, 49.246293)' as p > ) as foo; > > I'm not sure how to do similar binary conversions for path and > polygon, or other types. You might have to cast to text, and wrangle > it into some form of WKT, then pass it to ST_SetSRID(text, integer) to > make a geometry object for PostGIS. > > -Mike > > > On 26 October 2010 18:17, Wagner Santos <wagner.des...@gmail.com> wrote: > > 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! > > > > On Tue, Oct 26, 2010 at 1:18 PM, Wagner Santos <wagner.des...@gmail.com> > > wrote: > >> > >> Hello, > >> I'm new with postgis and I have a legacy database with Postgres Polygon, > I > >> want to convert this to a Postgis Geometry. Is there a way? > >> I try to do with replace string and linefromtext with sucess, but I > think > >> doesn't better solution because I can't set a valid SRID. > >> Thanks! > > > > _______________________________________________ > > postgis-users mailing list > > postgis-users@postgis.refractions.net > > http://postgis.refractions.net/mailman/listinfo/postgis-users > > > > > _______________________________________________ > postgis-users mailing list > postgis-users@postgis.refractions.net > http://postgis.refractions.net/mailman/listinfo/postgis-users >
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