[postgis-users] PostGIS analogues to ArcInfo geoprocessing functions

[Chris Hermansen]

Martin, Martin, Martin: code is the best documentation there is!  and
besides, it's not written in Perl so how bad can it be :-)

Martin Davis wrote:
> Have you looked at the code?  I rest my case....
>
> Paul Ramsey wrote:
>> On Thu, Jan 29, 2009 at 8:42 AM, Martin Davis
>> <mbdavis at refractions.net> wrote:
>>  
>>> The basic approach to computing polygon overlays has been
>>> well-understood
>>> for a long time (although this does not imply well-documented!).  The
>>> implementation however is quite tricky, especially if performance and
>>> robustness is required.  There is a notable lack of open-source
>>> existing
>>> implementations - which should be an indication of just how
>>> difficult this
>>> really is.
>>>     
>>
>> I believe the vector component of GRASS includes overlay (and of
>> course the raster component does too).
>>
>> http://grass.itc.it/grass64/manuals/html64_user/v.overlay.html
>>
>> P.
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>>
>>   
>


-- 
Regards,

Chris Hermansen         mailto:chris.hermansen at timberline.ca
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