View source for WMS

__TOC__

This page is about support of OGC web map services (WMS) in GRASS GIS.

== Metasites and collections of WMS servers ==

* [http://www.mapmatters.org/ Extensive catalogue of OGC web map services (WMS) worldwide]
* Telascience WMS services (in collaboration with OSGeo): see list at http://wms.telascience.org/

== Italian Public administration WMS ==

Example for public administration data imported via WMS into [[wxGUI]]

[[Image:WxGUI and Piedmont (Italy) WMS.png|thumb|center|300px|City of Orbassano map]]


== NASA's OnEarth WMS Example ==

[[Image:Akl_landsat.png|thumb|right|300px]]

{{wikipedia|Web_Map_Service|desc=Web Map Service}} (WMS) data can be downloaded and imported into GRASS using the {{cmd|r.in.wms}} module.
Mini tutorial for downloading [[SRTM]] elevation and [[LANDSAT]] imagery from [http://onearth.jpl.nasa.gov NASA's OnEarth WMS server].

Create a NZTM location (EPSG:2193) with the [[WxGUI#Location_wizard|location wizard]].

<source lang="bash">
# Zoom to AKL region
g.region n=5936130 s=5900340 w=1740030 e=1776030 res=30
</source>

If downloading for your own area, try to keep the region rows and columns smaller than the maxrow,maxcol options given to {{cmd|r.in.wms}}. Please don't abuse the server, just download small chunks.

<source lang="bash">
### Download and process SRTM elevation:

r.in.wms output=akl_srtm \
  mapserver="http://onearth.jpl.nasa.gov/wms.cgi" \
  -c layers=worldwind_dem format=geotiff style=short_int \
  maxcols=1600 maxrows=1600

g.rename akl_srtm.1,akl_srtm
r.colors akl_srtm color=srtm

### Download and process LANDSAT:

r.in.wms output=akl_landsat \
  mapserver="http://onearth.jpl.nasa.gov/wms.cgi" \
  -c layers=global_mosaic_base format=geotiff style=visual \
  maxcols=1600 maxrows=1600

i.landsat.rgb -p r=akl_landsat.red g=akl_landsat.green b=akl_landsat.blue
d.rgb r=akl_landsat.red g=akl_landsat.green b=akl_landsat.blue
r.composite r=akl_landsat.red g=akl_landsat.green b=akl_landsat.blue \
   output=akl_landsat --overwrite

### Shaeded relief map
r.shaded.relief akl_strm
d.shadedmap relief=akl_strm.shade drape=akl_landsat bright=70

### 3D view
nviz akl_srtm color=akl_landsat
</source>

In the [[NVIZ]] (or [[wxNviz]]) <tt>Visualization &rarr; Raster Surface</tt> menu set the fine raster grid size to 1. Set the vertical exaggeration to 1.0 or 2.0

== MetaCarta WMS Example ==

Create a NZTM location (EPSG:4326) with the [[WxGUI#Location_wizard|location wizard]].

<source lang=bash>
g.region n=90 s=-90 w=-180 e=180 res=0.5

r.in.wms -c output=map \
  mapserver="http://labs.metacarta.com/wms-c/Basic.py" \
  layers=basic format=geotiff \
</source>

== OpenStreetMap WMS Example ==

''Note: European coverage:''

 r.in.wms url=http://watzmann-geog.urz.uni-heidelberg.de/cached/osm layers=osm_auto:all output=osm format=png
 
 r.in.wms url=http://irs.gis-lab.info layers=osm output=osm format=png

See also example in {{cmd|r.in.wms}}

List of Servers: http://wiki.openstreetmap.org/wiki/WMS

== WMS support in GRASS 7 ==

{{YouTube|vfNw4SAP2Uc}}

[[Category: Documentation]]
[[Category: FAQ]]
[[Category: Geodata]]
[[Category: OGC]]
[[Category: Raster]]