Hi Laurent,
One possible solution - two datasets.
- Use a urban-areas polygon to clip the data into two datasets - one with
urban areas, the other rural.
- Style them both with different scale thresholds.
- Put both of them into the same layerGroup.
To your users it'll appear as a single layer while being optimised for
viewing at both scales.
---
Alternately rather than splitting the dataset, add an attribute/field to
the dataset that indicates if it is urban/rural. Load as a single layer
with an SLD which has two rules, and use a filter to distinguish between
them.
Hopefully that helps,
Jonathan
On 6 August 2014 10:39, PREVOSTO, Laurent <laurent.prevo...@sfr.com> wrote:
> Hello,
>
> We have geoserver based WMS services that display a quite large network
> (lots of points and polylines stored in an Oracle Spatial database).
>
>
>
> When in the cities, the number of items can be very large
>
> In the countryside, of course, the density of polylines is quite low.
>
>
>
> If I try to render a whole city, since there are too many items to
> render, the request will timeout.
>
> But if I set a scale condition to avoid drawing thousands of lines when in
> a large city, users complain that they can't find the cables when in the
> countryside...
>
>
>
> So my question was : is there a way to tell geoserver to render a blank
> image if there are more than n items in the Oracle resultset ?
>
> That way, I could keep a large scale in my TLD without going timeout in
> areas where there is a high density of items.
>
>
>
> Regards,
>
>
>
> Laurent
>
>
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