mapnik-org/mapnik — Issue #409: Add label placement count threshold parameter to avoid placing any labels if threshold is not exceeded
Author: artemp
Created: 2011-10-11 07:54:08+00:00
State: open
Labels: Symbolizers

This could be a parameter of % labels or total # of label, such that, for example if not more that 10% of labels are able to be placed none with be placed at all.

This would provide the ability to avoid odd renderings where just a few labels are placed, so few that they are not useful or scale appropriate.

Attached graphic as an example. At higher zoom level fewer labels would collide and the threshold would be met and all possible would be placed.