Changes between Version 181 and Version 182 of UserGuidelines/GIS/Data

Timestamp:

11/01/11 11:04:40 (13 years ago)

Author:

Fran Boon

Comment:

GADM reorder

UserGuidelines/GIS/Data

@@ -244 +244 @@
 }}}
 
-For GADM:
+==== 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] for WMS presentation:
+  * http://docs.geoserver.org/stable/en/user/styling/sld-introduction.html
+ * Publish
+  * Apply Style
+
+Colours:
+ * http://www.colorsontheweb.com/colorwizard.asp
+ * http://colorschemedesigner.com/
+
+Zoom Levels (in Spherical Mercator):
+||= Zoom Level(s) =||= !MinScale =||= !MaxScale =||
+|| 1 || 250000000 || n/a ||
+|| 2 || 100000000 || 250000000 ||
+|| 3 || 50000000 || 100000000 ||
+|| 4 || 25000000 || 50000000 ||
+|| 5 || 10000000 || 25000000 ||
+|| 6 || 5000000 || 10000000 ||
+|| 7 || 2500000 || 5000000 ||
+|| 8 || 2000000 || 2500000 ||
+|| 9 || 1000000 || 2000000 ||
+|| 10 || 500000 || 1000000 ||
+|| 11 || 250000 || 500000 ||
+|| 12 || 100000 || 250000 ||
+|| 13 || 50000 || 100000 ||
+|| 14-22 || n/a || 50000 ||
+
+==== Configure !GeoWebCache ====
+The raw WMS server will be slow, so once you've chosen your style, then you should serve via GWC. This caches pre-rendered tiles & also does MetaTiling so that the WMS has less separate requests (at a cost of increased RAM requirements)
+
+The version embedded within !GeoServer is great for providing a zeroconfig of the common options, however there are cases where you need to define a layer manually:
+ * Want a Background Colour (bgcolor)
+ * Want to specify an alternate style (& you'd rather not republish the layer on the WMS)
+ * Want to render a set of layers into a single tileset (so that clients don't need to download them separately & merge locally)
+Example [http://eden.sahanafoundation.org/attachment/wiki/UserGuidelinesGISData/geowebcache.xml geowebcache.xml] for GADM attached.
+{{{
+cp geowebcache.xml /var/gis/geoserver_data/gwc
+/etc/init.d/tomcat6 restart
+}}}
+==== 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
+}}}
+==== Add WMS Layer to Sahana Eden ====
+ * ''tbc''
+
+=== WMS Reprojection ===
+ * Have a remote WMS source that you want to access?
+ * Have a desire to keep !OpenStreetMap/Google/Bing layers?
+ * WMS source server doesn't support the 900913 projection?
+
+e.g. TRMM Rainfall Monitoring
+
+Solution: [wiki:InstallationGuidelinesGISDataLinux#ConfigurationforTRMM MapProxy]
+=== Grid ===
+We have a 'Coordinate Grid' Layer available by default.
+
+Other options:
+ * [wiki:BluePrintGISGrid]
+
+=== Administrative Areas ===
+==== GADM ====
+GADM is the best source of global Administrative Boundaries:
+ * http://gadm.org
+
+There are often better local sources for specific countries, although getting hold of these can be difficult.
+Note that some countries have boundaries which change frequently and so datasets can often be a little out of date.
+
+Import into PostGIS:
 {{{
 apt-get -y install gdal-bin pgloader
@@ -296 +384 @@
 pgloader
 }}}
-==== 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] for WMS presentation:
-  * http://docs.geoserver.org/stable/en/user/styling/sld-introduction.html
- * Publish
-  * Apply Style
-
-Colours:
- * http://www.colorsontheweb.com/colorwizard.asp
- * http://colorschemedesigner.com/
-
-Zoom Levels (in Spherical Mercator):
-||= Zoom Level(s) =||= !MinScale =||= !MaxScale =||
-|| 1 || 250000000 || n/a ||
-|| 2 || 100000000 || 250000000 ||
-|| 3 || 50000000 || 100000000 ||
-|| 4 || 25000000 || 50000000 ||
-|| 5 || 10000000 || 25000000 ||
-|| 6 || 5000000 || 10000000 ||
-|| 7 || 2500000 || 5000000 ||
-|| 8 || 2000000 || 2500000 ||
-|| 9 || 1000000 || 2000000 ||
-|| 10 || 500000 || 1000000 ||
-|| 11 || 250000 || 500000 ||
-|| 12 || 100000 || 250000 ||
-|| 13 || 50000 || 100000 ||
-|| 14-22 || n/a || 50000 ||
-
-==== Configure !GeoWebCache ====
-The raw WMS server will be slow, so once you've chosen your style, then you should serve via GWC. This caches pre-rendered tiles & also does MetaTiling so that the WMS has less separate requests (at a cost of increased RAM requirements)
-
-The version embedded within !GeoServer is great for providing a zeroconfig of the common options, however there are cases where you need to define a layer manually:
- * Want a Background Colour (bgcolor)
- * Want to specify an alternate style (& you'd rather not republish the layer on the WMS)
- * Want to render a set of layers into a single tileset (so that clients don't need to download them separately & merge locally)
+@ToDo: Get this imported into Sahana's gis_location table for consistency across basemap & queries (naming & boundaries).
+
+This can then be served as WMS using !GeoServer & !GeoWebCache
+
 Example [http://eden.sahanafoundation.org/attachment/wiki/UserGuidelinesGISData/geowebcache.xml geowebcache.xml] for GADM attached.
 {{{
@@ -336 +393 @@
 /etc/init.d/tomcat6 restart
 }}}
-==== 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
-}}}
-==== Add WMS Layer to Sahana Eden ====
- * ''tbc''
-
-=== WMS Reprojection ===
- * Have a remote WMS source that you want to access?
- * Have a desire to keep !OpenStreetMap/Google/Bing layers?
- * WMS source server doesn't support the 900913 projection?
-
-e.g. TRMM Rainfall Monitoring
-
-Solution: [wiki:InstallationGuidelinesGISDataLinux#ConfigurationforTRMM MapProxy]
-=== Grid ===
-We have a 'Coordinate Grid' Layer available by default.
-
-Other options:
- * [wiki:BluePrintGISGrid]
 
 === Population Density ===