No, I'm not very familiar with this part of the code. But it does seem
like an obvious optimization (for memory usage) to discard label candidates
as early as possible so I wouldn't be surprised to find that not all
labellable features are retained up to the time that labels are rendered,
so I thought it worth a mention. I'm sure Andrea will speak up if I am
leading you astray :)
--
David Winslow
OpenGeo - http://opengeo.org/
On Fri, Aug 10, 2012 at 10:36 AM, Michaël Michaud <[email protected]>wrote:
> **
> Thanks David,
>
> Seems to be the place I was looking for.
> have you an example where a label could be discarded before that method is
> called ?
>
> Michaël
>
> ------------------------------
> *De :* David Winslow [mailto:[email protected]]
> *Envoyé :* vendredi 10 août 2012 16:10
> *À :* Michaël Michaud
> *Cc :* [email protected]
> *Objet :* Re: [Geoserver-users] Label placement evaluation
>
> I don't believe this information is logged. The labeling engine lives in
> "gt-render", a module of GeoTools. The sources are here:
>
> https://github.com/geotools/geotools/tree/master/modules/library/render
>
> I think that the paintLabels method in the LabelCacheImpl class would be a
> good place to start looking to implement this feature, but it may be the
> case that candidate labels are already discarded before that method gets
> called.
>
>
> https://github.com/geotools/geotools/blob/master/modules/library/render/src/main/java/org/geotools/renderer/label/LabelCacheImpl.java#L533
>
> --
> David Winslow
> OpenGeo - http://opengeo.org/
>
> On Fri, Aug 10, 2012 at 4:11 AM, Michaël Michaud
> <[email protected]>wrote:
>
>> **
>>
>> Hi,
>>
>> We use geoserver in a large project and try to get the best from its
>> label placement options.
>> Results are quite good, but we miss a way to evaluate how many labels
>> (and if possible
>> which ones) are finally shown / hidden by the default conflictResolution
>> option.
>>
>> Is there a way to log this information or to evaluate how many labels
>> are lost ?
>> If not, can someone give a hint about where in the source code the overlap
>> test and the
>> decision to render a conflicting label is taken ?
>>
>> Thanks,
>>
>> Michaël
>>
>>
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