Steve.Lime at DNR.STATE.MN.US
Sun Jun 18 07:32:56 EDT 2006
Bill: You have a couple of options. If you want to create a new, buffered feature then you need to use mapscript with GEOS support compiled in. Then you can do something like:
$bShape = $shape->buffer(500);
If you want just query output then that is accomplished using tolerances. Both the CGI and mapscript have mechanisms to query using a arbitrary shape or using a feature query (staged query). So, if you select a polygon and then query other layers with non-zero tolerances then you are in effect doing a buffered query since mapserver will honor those tolerances...
>>> rubydunes <rubydunes at YAHOO.COM> 06/17/06 11:45 PM >>>
Hey Everyone... I'm wondering what strategies others
have used to buffer and select, that is to find all
features within a certain distance from a selected
feature. Is it built in somewhere and I just missed
that part in the documentation?
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