dbf on a Geotiff

[Frank Warmerdam]

On Tue, 11 Jan 2005 16:23:05 +0100, Wouter Schaubroeck
<wouter.schaubroeck at gmail.com> wrote:
> Hi all,
> 
> I've got here several Geotiffs and i have to add a point layer, the
> problem no is, that i don't have a shape file. Instead i have to work
> with a dbf file that contains my point coördinates. Is there a special
> tool or something that could do that for me, or perhaps some algorithm?
> 
> Many thanks and regards
> 
> Wouter Schaubroeck
> 

Wouter,

There is a mechanism via OGR to take some non-spatial tablular
data sources, and "interprete" an x and y column to display point layers.
This can be found in the Wiki at:

  http://mapserver.gis.umn.edu/cgi-bin/wiki.pl?VirtualSpatialData

The examples talk about accessing the table via ODBC but in your case
you can just specify the path to the .dbf file in your <SrcDataSource>.
Skip over the ODBC related stuff and go to the part about creating
a virtual data source.

You will need a MapServer with OGR support built in.  I believe most
of the distributed binary builds include OGR. 

Best regards,
-- 
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I set the clouds in motion - turn up   | Frank Warmerdam, warmerdam at pobox.com
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and watch the world go round - Rush    | Geospatial Programmer for Rent