[postgis-users] How to create a point geometry from two text fields?
cgalpin at lhsw.com
Fri Mar 25 08:34:47 PDT 2011
But his lat/lon are character varying so I think it would be more like
update mytable set the_geom=ST_GeometryFromText('POINT(' || long || ' ' || lat || ')',4326)
On Mar 25, 2011, at 11:26 AM, Stephen Woodbridge wrote:
> update mytable set the_geom=st_setsrid(st_makepoint(lon,lat),4326);
> On 3/25/2011 10:44 AM, Gis Mage wrote:
>> I have a table with two text fields "lat" and "long" of character
>> varying type.
>> I've created a field the_geom with type geometry.
>> How do I calculate the_geom field with an sql query?
>> The table is huge - about 1.5 million records, so I think the fastest
>> way to do this is to use pointfromtext function, but I can't figure out
>> how to put in the values of "lat" and "long" fields inside function
>> Can anyone help me out?
>> postgis-users mailing list
>> postgis-users at postgis.refractions.net
> postgis-users mailing list
> postgis-users at postgis.refractions.net
-------------- next part --------------
An HTML attachment was scrubbed...
More information about the postgis-users