Code covered by the BSD License  

Highlights from
READHGT: Import/download NASA SRTM data files (.HGT)

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from READHGT: Import/download NASA SRTM data files (.HGT) by François Beauducel
Imports or download SRTM worldwide digital elevation model data files.

landcolor(n)
function y = landcolor(n)
%LANDCOLOR Land colormap
%
%	Author: Francois Beauducel <beauducel@ipgp.fr>
%	$Revision: 1.0.0 $   $Date: 2012/05/17 11:22:44 $

J = [ ...
0.095678 0.53427 0.21682 
0.15785 0.5979 0.23274 
0.21286 0.64673 0.2514 
0.26411 0.68789 0.27268 
0.32959 0.72416 0.31308 
0.39794 0.75695 0.36038 
0.46153 0.7871 0.40624 
0.52108 0.81516 0.45135 
0.57702 0.84152 0.49547 
0.62973 0.86645 0.53891 
0.67946 0.89016 0.58187 
0.72647 0.91282 0.62427 
0.77095 0.93455 0.66619 
0.81306 0.95546 0.70772 
0.85292 0.97563 0.7489 
0.89066 0.99514 0.78976 
0.88379 0.98595 0.77038 
0.86389 0.96758 0.73236 
0.84615 0.94972 0.69623 
0.8303 0.93233 0.66186 
0.81612 0.91536 0.6291 
0.80341 0.8988 0.59784 
0.79201 0.8826 0.56795 
0.78191 0.86676 0.53946 
0.7729 0.85123 0.51224 
0.76479 0.83602 0.48615 
0.75747 0.8211 0.46111 
0.75084 0.80645 0.43704 
0.74506 0.79206 0.41414 
0.73981 0.77792 0.39211 
0.73501 0.76401 0.37089 
0.73068 0.75033 0.35052 
0.72683 0.73685 0.33106 
0.72042 0.72074 0.31228 
0.71032 0.70085 0.29417 
0.69761 0.67821 0.27694 
0.68489 0.65558 0.26026 
0.67235 0.63313 0.24418 
0.65997 0.61082 0.22889 
0.64775 0.58874 0.21406 
0.63568 0.56689 0.19983 
0.62376 0.54527 0.18622 
0.61197 0.52391 0.17299 
0.60033 0.50283 0.16046 
0.58881 0.48203 0.14832 
0.57742 0.46151 0.13667 
0.56616 0.44133 0.12555 
0.55502 0.4214 0.11472 
0.54398 0.4019 0.10456 
0.53306 0.38266 0.094633 
0.52226 0.36382 0.085242 
0.51155 0.3453 0.076179 
0.50095 0.32714 0.067515 
0.49045 0.30938 0.059259 
0.48005 0.29193 0.051294 
0.46973 0.27495 0.043796 
0.45951 0.25823 0.0365 
0.44938 0.24206 0.029715 
0.43934 0.22609 0.023063 
0.42938 0.21074 0.016949 
0.41951 0.19556 0.010917 
0.40971 0.18105 0.0054326 
0.4 0.16667 0 
];

l = length(J);
if nargin < 1
	n = 256;
end
y = interp1(1:l,J,linspace(1,l,n),'*linear');

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