[Neo4j] neo4j spatial - dynamic styling

Craig Taverner craig at amanzi.com
Thu Oct 7 10:47:12 CEST 2010


I found the correct geotools jar. It is gt-render.

On Thu, Oct 7, 2010 at 10:18 AM, Craig Taverner <craig at amanzi.com> wrote:

> Hi David,
>
> I think the problem on my side was simply lack of experience with SLD's.
> Since FOSS4G I've not spent any time on SLD's either, but instead on some
> updates to the OSM data model. However, I'm very keen to get the SLD work
> moving again, so right now I'm trying to turn your test code into a unit
> test in neo4j-spatial so I can start playing with it, and then integrate it
> with some code I got from Jesse for embedding the SLD in a uDig datastore so
> when we connect uDig to OSM in Neo4j it automatically gets great rendering
> :-)
>
> One question for you: the code has new dependencies for org.geotools.map
> and org.geotools.render. Where can I find these? A quick google search said
> org.geotools.map was found in gt-build, but that does not seem to exist.
> I'll look a little further, but if you have a quick answer, that would be
> great.
>
> And you last point about performance and style composition are very
> important. I'm assuming that the more advanced the styling we apply the
> slower the rendering, so I've pretty sure I'm going to be getting into deep
> water there and will certainly benefit from the advice of a real expert in
> SLD's. Of course, my plan has been to start by using the mapnik2geotools
> generated SLD's as a starting point, since I'm sure you did a great job with
> that :-)
>
> Regards, Craig
>
>
> On Thu, Oct 7, 2010 at 4:03 AM, David Winslow <cdwinslow at gmail.com> wrote:
>
>> Hi all,
>>
>> My name's David Winslow and I talked to Craig Taverner a few weeks ago at
>> FOSS4G about Neo4j-spatial.  I work with GeoTools and GeoServer and was
>> interested in the demo I saw of OSM data stored and rendered from a Neo4j
>> database instead of one of the more traditional storage systems.  We also
>> talked a bit about problems with styling in GeoTools.
>>
>> So, I played around with neo4j-spatial a bit last week to see what was
>> going
>> wrong and styling seems to work ok with the layers I tried. What I did was
>> to run just the TestDynamicLayers suite and then write a small program to
>> load it in GeoTools and render to PNG. http://gist.github.com/614421 is
>> the
>> precise code I used.
>>
>> Since I didn't run into any problems actually doing the styling, I guess
>> the
>> issues we discussed are a bit higher-level (performance, style
>> composition,
>> that kind of thing).  Does anyone have the time to explain these problems
>> in
>> a bit more detail?
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>
>


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