PHP/MapScript msQueryByPoint

[Didrik Pinte]

Le mardi 09 mai 2006 à 08:53 -0700, DjwStone a écrit :
> Thanks for the tip, Didrik. However, I'm still befogged. My query has
> returned 1 result (according to $mylayer->getNumResults()). I can use
> $mylayer->getResult() to give me a resultCacheMemberObj apparently, but what
> can I do with that? What are these shape, tile, and class indexes?
> 
> Should I be using queryByPoint in the first place?
> 
> I need a cold compress (or a stiff whisky).
> 
> Dave

It will be easier with some code. It's python but should be clear
enough :

if layer.queryByPoint(self.map, map_point, mode, buffer) ==
mapscript.MS_FAILURE:
 logging.error('Error while querying the layer')
else:
 results = layer.getResults()
 feat_atts  = []
 layer.open()
 num_res = results.numresults
 logging.debug("Query successful with %u results" % num_res)
 # get the headers
 headers = []
 for j in xrange(layer.numitems):
  headers.append(layer.getItem(j))

 # get the dataset
 for i in xrange(num_res):
  att = []
  qresult = results.getResult(i)
  afeat = layer.getFeature(qresult.shapeindex, qresult.tileindex)
  if afeat is not None:
   for j in xrange(layer.numitems):
    att.append(afeat.getValue(j))
   feat_atts.append(att)
  qresult = None
 layer.close()

The getFeature method gives you the feature, meaning the shapeObj, in
the layer.

I hope this helps

Didrik
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