Difference between revisions of "WMS"

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[[Image:Akl_landsat.png|thumb|right|300px]]
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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.
  
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<source lang="bash">
 
<source lang="bash">
 
# Zoom to AKL region
 
# Zoom to AKL region
g.region n=5936130 s=5900340 w=1740030 e=1776030 res=30
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g.region n=5936130 s=5900340 \
 +
        w=1740030 e=1776030 res=30
 
</source>
 
</source>
  

Revision as of 04:41, 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.