[Mapserver-users] Options for spatial selects

[Lowell Filak]

Sounds feasible, you may want to check JBOX & DBOX to see if a circle
shape could be incorporated into one of those before starting from
scratch if all you need are basic shapes for selecting.
More complex selection shapes may require using mapscript to generate a
temporary shape shape object to use for a query on a selected layer.

HTH

Lowell

The following message was sent by "Ben Lewis" <blewis at atsincorp.com> on
Thu, 15 Jul 2004 09:23:55 -0400.

> I have a project in which a user wants to select a bunch of features on
> the map by creating a shape and defining a spatial query. What are the
> options for mapserver based solutions?
>  
> One I can think of is using the tolerance value of the identify
> function.  One would use javascript to click and drag to create a circle
> on the screen, then send mapserver the identify coordinates (circle
> center) and tolerance (circle radius) to return everything in the
> circle.  
>  
> Any other ideas? 
>  
> I know PostGIS could be used, but I'm looking for mapserver/mapscript
> approaches, ideally using shape files.
>  
>  - Ben
>  
> _______________________________ 
> 
> Benjamin Lewis - Senior Analyst 
> Advanced Technology Solutions, Inc. 
> Lancaster, Pennsylvania 
> 717.399.7007 
> http://www.atsincorp.com <http://www.atsincorp.com/>  
> 
>