[Geotools-gt2-users] DWith and DBeyond ignore units

[Jody G. <jga...@re...>]

Adrian Custer wrote:
> On Sat, 2007-12-15 at 17:17 -0800, Jody Garnett wrote:
>   
>> Note the distance is measured in the same units as your data; so if you 
>> are using lat / long then the distance will be in degrees.
>>     
> Doesn't this actually mean that the calculation is meaningless since
> generally 'coordinate a' will be unequal to 'coordinate b' but the
> calculation will be euclidean in the number space?
>   
For all those people with data in meters things work out quite well. Now 
the filter specification asks us
to pay attention to the last "units" parameter; but as far as I can tell 
the current implementation does not
yet do this.
> /me really needs to learn filter sometime soon.
>   
Start with CQL syntax and the postgis lab example; you can type in the 
filters and see what you get back. I made a really
cool Reshape operation in uDig that may also serve to amuse you.

Jody