[postgis-users] Create a Thematic grid map with postgresql

[Frank Warmerdam]

claudio cesar trevisani wrote:
> Hello Listers,
> 
> My name is Claudio C. Trevisani, and I hope you will help me.
> I'm using mapserver, postgresql, postgis, phpmapscript and geos, in a debian
> based linux. This work fine.
> 
> In Mapinfo, the grid mapping displays data as continuous color gradations
> across the map.  This type of thematic is produced by an interpolation of point
> data from the source table.  A grid is generated from the data
> interpolation and displayed as a raster image in a Map window.
> 
> Well, I need to create a grid mapping like mapinfo, using mapserver,
> phpmapscript and postgresql (+ postgis and geos). My source table of points is
> stored in postgresql.

Claudio,

I don't believe there is a mechanism in PostGIS or MapServer to interpolate
grids from point data on the fly, though it is an interesting idea.

Best regards,
-- 
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