[mapserver-users] mapshape query

[Jensen, Hannah ERDC-CRREL-NH]

Hi, all.  I'm a MapServer newbie, so my apologies if this question has gone
around before.  I want to query a map for all features within a polygon, as
drawn on the map using the applet.  To do this, I was hoping to use the
mapshape CGI variable.  But when I tried to test this approach by
substituting polygon points and the mapshape variable for the imgbox for the
same area in Example 5 from the tutorial, I got no results for an area that
definitely should return results.  So the URL string from the example is:

http://terrasip.gis.umn.edu/cgi-bin/mapserv?map=%2FterrasipProjects%2Ftutori
al%2Fexample5.map&imgext=74000.000000+4653929.765886+798000.000000+5621070.2
34114&imgbox=155+190+205+238&mode=nquery&layer=state_parks&layer=lakes&layer
=counties&zoom=1&submit_button=Redraw%2FQuery

and I changed it to:

http://terrasip.gis.umn.edu/cgi-bin/mapserv?map=%2FterrasipProjects%2Ftutori
al%2Fexample5.map&imgext=74000.000000+4653929.765886+798000.000000+5621070.2
34114&mapshape=155+190+155+238+205+238+205+190+155+190&mode=nquery&layer=sta
te_parks&layer=lakes&layer=counties&zoom=1&submit_button=Redraw%2FQuery

which gave:

msQueryUsingShape(): Search returned no results. No matching record(s)
found. 

when it should have returned 5 state parks.  I must not be using mapshape
properly.  Can anyone shed some light on how to select features using a
shape rather than a rectangle?  Thanks!


Cheers,
Hannah