[mapserver-users] Querying type=circle layer

Christian Jauvin cjauvin at gmail.com
Tue Apr 7 17:23:20 EDT 2009


Hi,

I use Python-Mapscript 5.2 on Windows. I have a layer of type=circle
on which I dynamically add features:

layer = ..
circle_shape = shapeObj(MS_SHAPE_LINE)
p1 = pointObj(..)
p2 = pointObj(..)
line = lineObj()
line.add(p1)
line.add(p2)
circle_shape.add(line)
layer.addFeature(circle_shape)

Then later I'd like to query that same layer using either
queryByPoint() or queryByRect(), and there my problems begin:

(1) queryByPoint does not work at all (but the same code I use works
for other layers with static content, loaded from a shapefile or
PostGIS)

(2) queryByRect seems to work, as it returns MS_SUCCESS when there is
an overlap, but then it seems that I cannot retrieve the shape I want
using the result's shapeindex (I get an error message telling me that
it doesn't exist).

Am I missing something? Maybe queryByXX work differently with
dynamical content layers? Or maybe with type=circle layers?

Thanks a lot in advance for any help!

Christian


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