DESCRIPTION
r.in.onearth Download and import satellite images direct from
the NASA onearth WMS server into GRASS. The images are downloaded with
wget from http://wms.jpl.nasa.gov/
as geotiff image. After downloading the data, the images are imported
with r.in.gdal. Data will automatically
be reprojected to the LOCATION's projection from
latitude-longitude/WGS84 (EPSG:4326). The wget program needs to
be installed to get the images. The data will be downloaded with
the size, resolution and location of the current GRASS location.
g.region can be used to adjust these settings beforehand.
Downloadable Data sets
- WMS Global Mosaic, a high resolution global image mosaic of the
earth, produced from more than 8200 individual Landsat7
scenes.
- 30m SRTM Reflectance Image.
- Composite of data produced by the MODIS Rapid Response System,
from data collected by the MODIS/Terra (default: previous day).
- Composite of data produced by the MODIS Rapid Response System,
from data collected by the MODIS/Aqua (default: previous day).
- Blue Marble Next Generation, A MODIS-derived 500m true color
earth data set including seasonal dynamics.
NOTES
The images will be downloaded and stored into an temporary
directory. After the download of one image is finished, it will be
reprojected with gdalwarp (if the target location is not latitude-longitude/WGS84) and
imported with r.in.gdal. At the end, the temporary directory
will be deleted.
If the NASA WMS server do not provide the images,
r.in.onearth will try to handle this and shows the content of
the NASA error XML file at the stdout device.
More information about the NASA onearth WMS data available at
http://wms.jpl.nasa.gov/. The WMS
protocoll is hardcoded in r.in.onearth, also the NASA provided
parameters. If these parameters change, the script has to be
modified.
EXAMPLE
Download Landsat Global Mosaik for Spearfish (SD, USA) area:
g.region res=15 -pa
r.in.onearth -l output=spearfish tmband=visual
d.rgb b=spearfish_LandsatTM_visual.blue g=spearfish_LandsatTM_visual.green r=spearfish_LandsatTM_visual.red
SEE ALSO
r.in.srtm
AUTHOR
Original version by Soeren Gebbert, Markus Neteler
Rewritten to support tiled WMS by Hamish Bowman
Last changed: $Date$