On Thu, Sep 27, 2012 at 2:49 AM, Richard (Abe) Coughlin <ra...@hawaii.edu>wrote:
> Thanks Andrea,
>
> I followed your suggestions and found that Geoserver 2.2 displays rasters
> with negative values successfully. So I will upgrade.
>
> However, there were issues displaying a raster that had both negative and
> positive values. Using the standard 'raster' style the raster was displayed
> but the values had been stretched from -9/18 to 0/255. The actual data
> values were lost. I tried a three color gradient over negative values, zero
> and positive values however this resulted in a failure to display the
> raster.
>
> I will open a bug report for this issue.
>
>
The default raster style is not suitable to display single band, geophisics
data, all you get is a on the fly
histogram analysis of your data which is then used to create a grayscale
map, which of course changes
any time you zoom since you get different data ranges.
Have a look at the guide and try using a colormap:
http://docs.geoserver.org/latest/en/user/styling/sld-reference/rastersymbolizer.html
Cheers
Andrea
--
==
Our support, Your Success! Visit http://opensdi.geo-solutions.it for more
information.
==
Ing. Andrea Aime
@geowolf
Technical Lead
GeoSolutions S.A.S.
Via Poggio alle Viti 1187
55054 Massarosa (LU)
Italy
phone: +39 0584 962313
fax: +39 0584 1660272
mob: +39 339 8844549
http://www.geo-solutions.it
http://twitter.com/geosolutions_it
-------------------------------------------------------
------------------------------------------------------------------------------
Everyone hates slow websites. So do we.
Make your web apps faster with AppDynamics
Download AppDynamics Lite for free today:
http://ad.doubleclick.net/clk;258768047;13503038;j?
http://info.appdynamics.com/FreeJavaPerformanceDownload.html
_______________________________________________
Geoserver-users mailing list
Geoserver-users@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/geoserver-users
