[gdal-dev] Re: Looking for advice on finding neighboring features

[Joaquim Luis]

Kenn Sebesta wrote:
>> If you release the shapefile constraint, GMT's grdtrack program is lightning
>> fast
>> in interpolating a grid into a series of x,y positions.
> 
> Well, the only reason I'm using shapefiles is because that's what the
> mapping department gave me. If a shapefile can be converted into a
> grdtrack, using some sort of automatic process, then I'm completely
> ready to switch. Since I don't need much from the data, and won't
> ever, it doesn't hurt right now to change directions.

grdtrack takes plain ascii x,y coordinates. You can get them by converting
your shapefiles to gmt formats using ogr2ogr.

Joaquim