Re: distance calculation usng lat and long in miles

There is the earthdistance package in the contrib directory. You may want to
look into that.

On Wednesday 08 March 2006 09:10, sunithab(at)travelpost(dot)com wrote:
> I have the lat and long data. I have created the geom column based on the
> lat and long data as below.
>
>
> UPDATE property SET geom =GeometryFromText('POINT(' || long ||
> ' ' || lat || ')',4326);
>
> Now I have the geom columns in two tables
>
> I am calculating the distance as below
>
> select distance(geom1, geom2)* 69.055
>
>
> It seems to be right. But I want to make sure.
>
> Thanks for help in advance.
>
>
>
> ---------------------------(end of broadcast)---------------------------
> TIP 9: In versions below 8.0, the planner will ignore your desire to
> choose an index scan if your joining column's datatypes do not
> match

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