Behaviour of DWithin and Beyond filters

J. Parapar listario at GMAIL.COM
Sat Aug 25 16:52:45 PDT 2007


 Hi all:

 In the migration to MapServer 5.0 I have observed a change in the
behaviour of the DWithin filter. In previous version we were using
this filter to select the features whose distance from a given object
were less than a given value. Now the selection by this filter seems
to be the features which are completely contained within a given
buffer around the object as explained in ticket
http://trac.osgeo.org/mapserver/ticket/2105 (comment 05/27/07). In
this ticket is also commented that the Beyond filter should select the
features which are completely outside of the buffer, but in the tests
I have made it seems that it selects the features which are not
completely contained within the buffer. Am I right in my appreciation?
Should the behaviour of the Beyond filter be changed?

 Thanks. Best regards,
 Jorge



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