On Fri, Sep 9, 2011 at 1:56 PM, Tito, Joseph <[email protected]> wrote:
> Thanks everyone for the replies, but I had a few other questions about
> integrating GeoServer:****
>
> ** **
>
> **- **Is there any way to make the points plotted by a WMS
> clickable? In our current app our points open popups when clicked, and we’d
> like to replicate that.
>
Yes, you can take a look at the openlayers preview in GeoServer for one way
to accomplish that, or OpenLayers has a few controls for doing it depending
on your needs (GetFeatureInfo, SLDSelect, etc.)
> ****
>
> - Is there a way to filter points returned from the WMS? Ex.
> SELECT * FROM [table] WHERE type IN ([types]) AND time >= expiredTime
>
You can add a CQL filter to the query.
http://docs.geoserver.org/stable/en/user/tutorials/cql/cql_tutorial.html
> ** **
>
> *From:* Phil Scadden [mailto:[email protected]]
> *Sent:* Thursday, September 08, 2011 5:06 PM
> *To:* [email protected]
> *Subject:* Re: [Geoserver-users] How do you handle large amounts of data?*
> ***
>
> ** **
>
>
> ****
>
> The main problem I have is when a user views an area on a map that has more
> than 2,000 points, performance is severely degraded. I was wondering if
> GeoServer could help with this in some way. If a particular area has 5,000
> points for example, is there a way to group that information into clusters
> with GeoServer. So the browser only thinks there’s 2,000 points, but those
> points represent the 5,000 you should be seeing?****
>
> Well I am pumping out some pretty huge datasets via geoserver, but the
> drawing is done WMS. When you talk about performance degradation with 3000
> pts, it sounds like you are using WFS which is definitely too slow. You want
> to draw with WMS (where you have server-level hardware doing the drawing
> using fast code not javascript and where tile caching can further improve
> performance), and WFS for querying. If you look at the SLDSelect example in
> openlayers, you can even use WMS for drawing the selection but geoserver
> doesnt honour SRS in the SLD (mapserver does) so you have to deal with that
> in the client.****
>
> Notice: This email and any attachments are confidential. If received in
> error please destroy and immediately notify us. Do not copy or disclose the
> contents.****
>
> ****
>
>
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Why Cloud-Based Security and Archiving Make Sense
Osterman Research conducted this study that outlines how and why cloud
computing security and archiving is rapidly being adopted across the IT
space for its ease of implementation, lower cost, and increased
reliability. Learn more. http://www.accelacomm.com/jaw/sfnl/114/51425301/
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