Difference between revisions of "WMS"

From GRASS-Wiki
Jump to: navigation, search
m (cat)
Line 1: Line 1:
[[Image:Akl_landsat.png|thumb|right|300px]]
+
[[Image:Akl_landsat.png|thumb|right|400px]]
 +
 
 +
* {{wikipedia|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 NASA's OnEarth WMS server.
 
Mini tutorial for downloading SRTM elevation and LANDSAT imagery from NASA's OnEarth WMS server.

Revision as of 04:49, 21 May 2010

Akl landsat.png


Mini tutorial for downloading SRTM elevation and LANDSAT imagery from NASA's OnEarth WMS server.


  • create a NZTM location (EPSG:2193) with the startup wizard.
# Zoom to AKL region
g.region n=5936130 s=5900340 \
         w=1740030 e=1776030 res=30

If downloading for your own area, try to keep the region rows and columns smaller than the maxrow,maxcol options given to r.in.wms.

### 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
  • In the Visualization → Raster Surface menu set the fine raster grid size to 1.