Changes between Version 151 and Version 152 of UserGuidelines/GIS/Data

Timestamp:

06/15/11 18:44:15 (14 years ago)

Author:

Fran Boon

Comment:

--

UserGuidelines/GIS/Data

@@ -258 +258 @@
 ==== Configure !GeoServer ====
  * Add [http://geo.eden.sahanafoundation.org/geoserver/web/?wicket:bookmarkablePage=:org.geoserver.web.data.layer.LayerPage Layer]
- * Add [http://geo.eden.sahanafoundation.org/geoserver/web/?wicket:bookmarkablePage=:org.geoserver.wms.web.data.StylePage Style]:
+ * Add [http://geo.eden.sahanafoundation.org/geoserver/web/?wicket:bookmarkablePage=:org.geoserver.wms.web.data.StylePage Style] for WMS presentation:
   * http://docs.geoserver.org/stable/en/user/styling/sld-introduction.html
  * Publish
   * Apply Style
 
+==== WFS ====
+If you are displaying a complex dataset at zoomed-out resolutions, then you will want to have simplified views.
+
+e.g. Hospitals aren't shown at all at low zooms, are shown as Points at medium zooms & shown as Polygons at high zooms.
+
+Scale-dependent styling using SLD in !GeoServer:
+ * http://ian01.geog.psu.edu/geoserver_docs/data/naturalearth/naturalearth_physical.html
+
+Scale-dependent styling in !OpenLayers:
+ * http://docs.openlayers.org/library/feature_styling.html#custom-rules
+
+Simplifying Polygons in PostGIS:
+ * http://linfiniti.com/2011/06/scale-dependent-generalization-in-postgis-and-qgis/
+
+Showing the different layers at different zooms using !GeoServer:
+ * http://docs.geoserver.org/stable/en/user/tutorials/feature-pregeneralized/feature-pregeneralized_tutorial.html
+{{{
+cd
+wget http://kent.dl.sourceforge.net/project/geoserver/GeoServer%20Extensions/2.1.0/geoserver-2.1.0-feature-pregeneralized-plugin.zip
+cd /var/lib/tomcat6/webapps/geoserver/WEB-INF/lib/
+unzip ~/geoserver-2.1.0-feature-pregeneralized-plugin.zip
+/etc/init.d/tomcat6 restart
+}}}
+
+@ToDo: How to get Sahana's Map Viewing Client to request the different layers at different zoom levels?
 ==== Add WMS Layer to Sahana Eden ====
  * ''tbc''