> For Mapnik the (0,0) co-ordinate is in the top left corner and are > postive in the down/right direction. Positive dy values move the label > downwards. As you say both positive and negative offsets work for the > OSM style (e.g. station names are above the symbol with a -ve offset, > pub names are below with +ve offset[1]).
Using this combination: <PointSymbolizer file="cemetery.png" type="png" width="20" height="20" allow_overlap="true"/> <TextSymbolizer name="name" face_name="DejaVu Sans Bold" size="9" fill="#000" halo_radius="1" placement="point" dy="20"/> Allows my label below the symbol. The label gets closer to the symbol as I decrease dy and stops appearing when I have dy at 15 (I assume the label overlaps the symbol at this point and is not drawn). > I would try increasing the dy to larger values +-40 and make sure the > label is nowhere near the edge of what you are rendering. I think the > label will be dropped if it even slightly overlaps with the edge of the > rendered area. The OSM tiles get rendered with a fairly large off-tile > gutter to avoid losing names on tile boundaries. However, no negative value of dy allows the label to be placed above the symbol. I have tried -10, -45, -200 and the label just does not appear. Putting some debug in the mapnik source shows that the call to placement_finder<label_collision_detector4>::find_point_placement() is returning no label locations when dy is set to a negative value (where setting to a positive 20 finds 1 label location). Which is why I pondered if there was a bug in find_point_placement() or if it was user error. Either way, using a large negative value for dy didn't help. - B -- Brian Peschel _______________________________________________ Mapnik-users mailing list [email protected] https://lists.berlios.de/mailman/listinfo/mapnik-users
