USGS Pluto Relief
Usage
You access the global New Horizon relief grid by specifying the special name
@pluto_relief[_rru[_reg]]
This grid contains observed relief measured via altimetry. The following codes for the optional rru and reg are supported (dimensions are listed for pixel-registered grids; gridline-registered grids increment dimensions by one):
Code |
Dimensions |
Reg |
Size |
Description |
|---|---|---|---|---|
01d |
360 x 180 |
g,p |
71 KB |
1 arc degree Pluto relief (NH @ 59 km) |
30m |
720 x 360 |
g,p |
220 KB |
30 arc minute Pluto relief (NH @ 29 km) |
20m |
1080 x 540 |
g,p |
452 KB |
20 arc minute Pluto relief (NH @ 20 km) |
15m |
1440 x 720 |
g,p |
774 KB |
15 arc minute Pluto relief (NH @ 15 km) |
10m |
2160 x 1080 |
g,p |
1.6 MB |
10 arc minute Pluto relief (NH @ 9.8 km) |
06m |
3600 x 1800 |
g,p |
4.2 MB |
6 arc minute Pluto relief (NH @ 5.9 km) |
05m* |
4320 x 2160 |
g,p |
6.0 MB |
5 arc minute Pluto relief (NH @ 4.9 km) |
04m* |
5400 x 2700 |
g,p |
9.0 MB |
4 arc minute Pluto relief (NH @ 3.3 km) |
03m* |
7200 x 3600 |
g,p |
15 MB |
3 arc minute Pluto relief (NH @ 2.9 km) |
02m* |
10800 x 5400 |
g,p |
33 MB |
2 arc minute Pluto relief (NH @ 2.0 km) |
01m* |
21600 x 10800 |
g,p |
122 MB |
1 arc minute Pluto relief (NH @ 1.0 km) |
52s* |
24888 x 12444 |
p |
124 MB |
52.07… arc second Pluto relief (NH original) |
See GMT remote dataset usage for when resolution codes are optional or required.
All of these data will, when downloaded, be placed in your ~/.gmt/server directory, with
the pluto_relief files being placed in an pluto/pluto_relief sub-directory. If you
do not specify a CPT then the default CPT for this dataset (the GMT master @pluto_relief CPT) will be used.
Technical Information
As you see, the 01m and lower resolutions are all derivatives of USGS’ 52.0732883317 arc-second Pluto_NewHorizons_Global_DEM_300m_Jul2017_16bit.tif (Moore_et_al., 2016). We have downsampled it via Cartesian Gaussian filtering to prevent aliasing while preserving the latitude-dependent resolution in the original 52.0732883317 arc sec grid. The full (6 sigma) filter-widths are indicated in parenthesis. Almost all grids are available in both gridline- and pixel-registered formats except the original pixel-registered grid at 52.0732883317 arc-seconds resolution (here called @pluto_relief_52s). Data resolution is 0.25 meter.