On 02/14/2012 06:17 PM, Stephen Woodbridge wrote:
google: mapserver geomtransform
this will let you fix the label point to the centroid of the object or
some other positions.
The issue is that the label point is generally calculated based on the
geometry of the object as clipped to the view port. So the geometry
changes based on the view clipping and this causes the label point to
also change. the geomtransform works on the original data and so the
label point becomes fixed.
No I can't get this to work, perhaps I don't understand the syntax of
geomtransform. Can you give me an example of fixing a label to the
center point of a rectangle, without shifting it when the rectangle
crosses the viewport? My mapfile looks:
connectiontype postgis
connection ""
data the_rect from bnds
labelitem rect_id
style
color 0 0 0
end
label
color 0 0 255
end
I put a few geotransforms within the label and within the style objects,
but the label always shifts near the margin of the viewport.
Thanks,
Jan
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