AW: [mapserver-users] Errors in trying to angle my labels.
Ron M
rm_mapserv at cheapcomplexdevices.com
Thu Feb 12 17:38:20 PST 2009
Stephen Woodbridge wrote:
> Since you seem to be doing this in postgis, I think the way to do thie
> is something like this:
>
> DATA "the_geom from (select
> (180/3.141592654*atan2((y(endpoint(the_geom))-y(startpoint(the_geom))),
>>> (x(endpoint(the_geom))-x(startpoint(the_geom))))) as angle, the_geom,
> ... from table ...) as foo using ..."
>
> then you can do
>
> ANGLE [angle]
>
> to use the value as an attribute column.
Very nice! It works. Thanks much.
More information about the MapServer-users
mailing list