[Gdal-dev] OGRGeometry::Distance()

[Sean Gillies]

On Mar 26, 2006, at 9:13 PM, Frank Warmerdam wrote:

> Danilo Sanchi wrote:
>> Hi,
>> Could you say me if is possible to use the method Distance() of  
>> OGR geometry class at this moment? How can do to run it?
>> I understand that this method use the GEOS library to run, but OGR  
>> at now do not include the Geos version that implement this  
>> functionallity correctly.
>
> Danilo,
>
> When GDAL is built against the GEOS C API it does not currently
> provide the Distance operation since the original version of the C API
> did not include this.
>
> If you are currently using the GEOS C API and would prefer to use  
> the C++
> API of GEOS to enable distance support, you can modify the line in the
> gdal/GDALmake.opt file that says "HAVE_GEOS = c_api" to read instead
> "HAVE_GEOS = yes".  (this is for unix or linux).
>
> Best regards,

FYI, I've added distance to the GEOS C API in CVS, and it will be out  
in the 2.2.2 release.

Sean

---
Sean Gillies
http://zcologia.com