mapserver only understand tolerance values of -1 or >= 0

[ochriste]

There is a little inaccuracy in the php-mapscript documentation about queryByPoint usage. Mapserver only understand a tolerance value of -1 or >=0.

The documentation say: "Passing buffer <=0 defaults to tolerances set in the map file ..." It should be: "Passing buffer -1 defaults to tolerances set in the map file..."

The queryByPoint function appears twice (same comment) in the documentation: under mapObj and layerObj.

see the related discussion for reference: ​http://lists.osgeo.org/pipermail/mapserver-users/2008-July/056744.html

[jmckenna]

modified in the source code README and online (​http://mapserver.gis.umn.edu/docs/reference/phpmapscript-class)