On 6/28/20 5:02 AM, 정영호 wrote: > Hello. I am GIS Newbie. > I am currently publishing satellite images as layers in geotiff format. > And I am requesting it in wms and displaying it on openlayers. > I want to filter by giving a range of pixel values. > For example, if the layer has values from 1 to 1000, I would like to filter > values from 50 to 200. > I tried using the cql filter, but the result was not displayed. > Is there a way to filter raster data using geoserver? > Is there any good way to do this?
If you are only requesting it via WMS, then should you not just 'style' your layer in such a way that you only show 50-200 (and make the rest 100% transparent)? See https://docs.geoserver.org/stable/en/user/styling/sld/reference/rastersymbolizer.html for more information about 'styling' your rasters. I'm not sure what the status is of the sld-export of rasterdata of QGIS, but for vector I often style the layer in QGIS and then export it to sld, to have at least a starting point or some usefull (color) snippets. But as said: I'm not sure if this is handy for rasters, as I do not now if there is good raster-style-export-to-sld ... Regards, Richard Duivenvoorde _______________________________________________ Geoserver-users mailing list Please make sure you read the following two resources before posting to this list: - Earning your support instead of buying it, but Ian Turton: http://www.ianturton.com/talks/foss4g.html#/ - The GeoServer user list posting guidelines: http://geoserver.org/comm/userlist-guidelines.html If you want to request a feature or an improvement, also see this: https://github.com/geoserver/geoserver/wiki/Successfully-requesting-and-integrating-new-features-and-improvements-in-GeoServer Geoserver-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/geoserver-users
