Hi,
if you were using Geoserver and wms, dynamic symbolizer could help you.
Check the following out:
http://blog.geoserver.org/2008/12/08/dynamic-symbolizers-part-1/
- mika -
willson kirjoitti:
>
> Hi,
> try to search mailing list for strategies, performance. I have the same
> problem not solved yet. It looks I will have to render at server site.
>
> Michal
>
>
> Hi everyone, this is the first post on this forum. I have search the problem
> on the forum, but find no anwser.
> What I need to solve is: I have more than 400 points need to show on the
> map, these points query my db every 10 secs, and change their color according
> to the return value.
> I use the openlayers.layer.marker to implement, but in ie the markers make
> the map so slow when zooming.
> Then I move to openlayers.layer.vector, but it's even slower than marker.
> Any suggestion in such "Adding large and dynamically changed markers"
> situation?
>
>
>
>
> hi, render in serverside(may be wms) can improve the performance much, but
> how to make markers dynamically change color? Any solution?
>
>
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hi,
Yes, I am using geoserver and wms. I have look at the link, but it may be not
the answer. Since the data in my db change frequently, and the marker need to
reflect these changes. For example , I have a table, and a column named "kpi",
when kpi<0.01, the marker's color is green, else is red. It may be not an "sld"
issue.
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