[postgis-users] Calculate area shperoid

[Matt Farley]

Brent,

I thought Lat/Long was SRID 4269?  What's the difference between 4326 and 4269? 

> 
> 
> --- luzbrigitte <luzbrigitte at hotmail.com> wrote:
> 
> > Hi, anyone knows how can I calculate area to polygons ?  We work with
> WGS84
> > system,  srid -1 and PostGis 0.9
> 
> If your SRID is -1, then Postgis doesn't know whether the units are
> degrees/metres etc. If your data is lat/long degrees wgs84, try using a SRID
> like 4326 instead. That allows the transform function to correctly reproject
> your lat/long coords to the equal area projection you want to derive your
> area
> result from.
> 
> 
> Brent
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