[OpenLayers-Users] Polygon Cluster
tschaub at opengeo.org
Tue Oct 28 00:07:52 EDT 2008
Jacolin Yves wrote:
> Le Monday 27 October 2008 17:28:04 Jerome Freyre, vous avez écrit :
>> Maybe If I found a solution to "uncluster" some features a zoom level, I
>> mail you ;)
It would be a pretty trivial patch to add an option to the strategy that
would cause the "real" feature to get added to the layer instead of the
cluster at some cluster count. Sounds like you are talking about doing
this with a count of 1 - but perhaps someone else would want to see real
features with a count of 2, or 3, or whatever.
One issue with this is that a cluster feature has a different
"interface" than an arbitrary feature. Specifically, you can always
find feature.attributes.count and feature.cluster on a cluster.
If you (or anyone is interested in writing patches) want this
functionality, I would suggest adding a single property (maybe
"threshold") to the strategy. If this property were non-null, it would
be a feature count at which (and below which) the pre-cluster feature(s)
would be added to the layer instead of the cluster feature.
The threshold check would come in the cluster method of the strategy
(before line 163 - if non-null threshold, create a new clusters array,
loop through the existing clusters, add clusters to your new array where
count > threshold and add real features otherwise).
If you (or anyone) creates a patch, I can help with the test writing and
> Thanks !
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