Re: [postgis-users] Traverse set distance along a multiline?

2010-12-27 Thread pcreso
Hi Aren, In this sort of case I usually prefer to keep my source data as a reference, as well as an indexed reprojected (working) version of the geometry. Instead of doing it as you have done, and create a new table, I add a new geometry column of the appropriate type & SRID to the original ta

Re: [postgis-users] Traverse set distance along a multiline?

2010-12-27 Thread Aren Cambre
Thank you. Now my shp2pgsql conversion results in a PostGIS table with an SRID. I then ran this query to reproject the data into a new table: *INSERT INTO txdot_roadways_3081_transform* *SELECT [all other fields go here], ST_Transform(the_geom, 3081) as the_geom * *FROM txdot_roadways;* Loading in

Re: [postgis-users] Traverse set distance along a multiline?

2010-12-27 Thread Paul Ramsey
Right, use 4269, that's a good NAD83-geographic-coordinates number. Import with shp2pgsql -s 4269 and go from there. P On Mon, Dec 27, 2010 at 3:54 PM, Aren Cambre wrote: > Brent and Paul, > Thank you for your help! > So here's my (new) dilemma--my PostGIS table doesn't appear to have a > projec

Re: [postgis-users] Traverse set distance along a multiline?

2010-12-27 Thread Aren Cambre
Brent and Paul, Thank you for your help! So here's my (new) dilemma--my PostGIS table doesn't appear to have a projection specified, and I am not clear how to get to one. I don't think it has a projection because this table's corresponding entry in the *geometry_columns* table has *-1* for the *