Creating objects on the fly from the database
Doyon, Jean-Francois
Jean-Francois.Doyon at CCRS.NRCan.gc.ca
Tue Sep 19 06:54:52 PDT 2000
You sure can.
Just use mapscript (For perl or PHP), to create a temporary shapefile that
will be used as a layer in the end product.
You would use for instance perl to interface with the database, and use the
appropriate mapscript functions
to put this data into a temporary shapefile. You then define the layer as
needed, using the said shapefile as the data
source. If you need to, you can use the PROJ.4 support to do on-the-fly
projection conversion if say your DB dataset
returns geographical coordinates, but your base layers are ins some other
projection (Which they most likely would be).
Hope this helps !
J.F.
> ----------
> From: Niels van Dijk[SMTP:Niels at nieuwland.nl]
> Sent: Tuesday, September 19, 2000 7:06 AM
> To: mapserver-users at lists.gis.umn.edu
> Subject: Creating objects on the fly from the database
>
> Hi All,
> I'm a newbie with the Mapserver, so I'm sorry if i'm asking things
> allready
> discussed, but I couldn't find anything about this in the Archives.
> - I want to add data from a database containing geographical coordinates
> and some label dynamically to the map, to create so called event themes.
> Can this be done?
> - I'd like to be able to use the coordinates of the map to dynamically
> create point on the map and add these to a database.
>
> thanks in advance
> Niels van Dijk
>
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