On Aug 23, 2010, at 9:46 AM, Graham Jones
<[email protected]> wrote:
Hi Dane,
Sorry, I'll try to explain.
I am using PointSymbolizer to put icons on a map.
If I add 'allowOverlap=false' (I may have got that wrong), mapnik
only displays a single icon in an area rather than multiple
overlapping ones.
Yes.
What I would like to do is use a different icon if it is a true
single entity (ie no other things near it) rather than an icon that
represents multiple entities.
Okay. Points placed, in this case always represent single entities.
Your assumption that they are grouped/multiple is reasonable if
clustering were happening (combining of two features a given distance
apart into one rendered point). But it is not as right now points that
are placed simply exclude other points that might later overlap when
rendered and thus the sorting of your data determines which will more
likely show up.
I agree this would be a desirable feature (clustering) and I actually
started scoping it for a client last week. I will reply to this thread
when I have made progress.
This may be 'clustering' - I'm not sure! I'll search for clustering
when I get home.
Regards
Graham.
On 23 August 2010 15:39, Dane Springmeyer <[email protected]> wrote:
Graham,
Are you talking about clustering? If not, we might need a bit more
explanation to see exactly what you are trying to do?
Dane
On Aug 22, 2010, at 3:38 PM, Graham Jones wrote:
Hi,
Can anyone tell me if it is possible to use a different symbol for
a PointSymbolizer or ShieldSymbolizer if it represents multiple
entities (ie if you say 'overlap=false' so it does not draw all of
the symbols)? Ideally I would like to add a 'x3' next to it if it
represents 3 nearby features etc, but just a different symbol would
do for starters.
If it is possible, how do I do it? - I am struggling to find it in
the documentation, so am not sure if it is possible or not.
Thanks
Graham.
--
Dr. Graham Jones
Hartlepool, UK
email: [email protected]
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--
Dr. Graham Jones
Hartlepool, UK
email: [email protected]
_______________________________________________
Mapnik-users mailing list
[email protected]
https://lists.berlios.de/mailman/listinfo/mapnik-users
_______________________________________________
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