Global datasets: Difference between revisions

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(→‎ETOPO1: instructs)
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Grid registered version must be loaded into a simple XY location and have the 90deg N,S rows cropped away.
Grid registered version must be loaded into a simple XY location and have the 90deg N,S rows cropped away.


# create a new simple XY location and mapset
# Import grid registered binary float
  r.in.bin -f in=etopo1_bed_g.flt out=etopo1_bed_g \
  r.in.bin -f in=etopo1_bed_g.flt out=etopo1_bed_g \
     n=90.008333333335 s=-90.008333333335 e=180.00833333334 \
     n=90.008333333335 s=-90.008333333335 e=180.00833333334 \
     w=-180.00833333334 rows=10801 cols=21601 anull=-9999
     w=-180.00833333334 rows=10801 cols=21601 anull=-9999
  r.colors out=etopo1_bed_g color=etopo2
  r.colors out=etopo1_bed_g color=etopo2
# reduce region by 1 cell
g.region rast=etopo1_bed_g
eval `g.region -g`
g.region n=n-$nsres s=s+$nsres e=e-$ewres -p
# save smaller raster and remove original
r.mapcalc "etopo1_bed_g.crop = etopo1_bed_g"
g.remove etopo1_bed_g
# change the location to lat/lon by restarting GRASS
#  in the PERMANENT mapset and running {{cmd|g.setproj}}


=== ETOPO2 ===
=== ETOPO2 ===

Revision as of 07:30, 11 October 2008

Blue Marble imagery

ETOPO

ETOPO1

Cell registered version can be loaded directly into a lat/lon region.

Grid registered version must be loaded into a simple XY location and have the 90deg N,S rows cropped away.

# create a new simple XY location and mapset
# Import grid registered binary float
r.in.bin -f in=etopo1_bed_g.flt out=etopo1_bed_g \
   n=90.008333333335 s=-90.008333333335 e=180.00833333334 \
   w=-180.00833333334 rows=10801 cols=21601 anull=-9999
r.colors out=etopo1_bed_g color=etopo2
# reduce region by 1 cell
g.region rast=etopo1_bed_g
eval `g.region -g`
g.region n=n-$nsres s=s+$nsres e=e-$ewres -p
# save smaller raster and remove original
r.mapcalc "etopo1_bed_g.crop = etopo1_bed_g"
g.remove etopo1_bed_g
# change the location to lat/lon by restarting GRASS
#  in the PERMANENT mapset and running g.setproj

ETOPO2

ETOPO2v2 data download

Miscellaneous

LANDSAT

MODIS

Pathfinder AVHRR SST

merge that info here?

QuickBird

  • ?

SeaWiFS

merge that info here?

Smith and Sandwell

SRTM