/[MITgcm]/MITgcm/utils/matlab/cm_landwater.m
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Contents of /MITgcm/utils/matlab/cm_landwater.m

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Revision 1.2 - (show annotations) (download)
Sat Feb 17 23:49:43 2007 UTC (14 years, 4 months ago) by jmc
Branch: MAIN
CVS Tags: checkpoint64y, checkpoint64x, checkpoint64z, checkpoint64q, checkpoint64p, checkpoint64s, checkpoint64r, checkpoint64u, checkpoint64t, checkpoint64w, checkpoint64v, checkpoint64i, checkpoint64h, checkpoint64k, checkpoint64j, checkpoint64m, checkpoint64l, checkpoint64o, checkpoint64n, checkpoint64a, checkpoint64c, checkpoint64b, checkpoint64e, checkpoint64d, checkpoint64g, checkpoint64f, checkpoint58w_post, checkpoint63p, checkpoint63q, checkpoint63r, checkpoint63s, checkpoint63l, checkpoint63m, checkpoint63n, checkpoint63o, checkpoint63h, checkpoint63i, checkpoint63j, checkpoint63k, checkpoint63d, checkpoint63e, checkpoint63f, checkpoint63g, checkpoint63a, checkpoint63b, checkpoint63c, checkpoint64, checkpoint65, checkpoint60, checkpoint61, checkpoint62, checkpoint63, checkpoint66g, checkpoint66f, checkpoint66e, checkpoint66d, checkpoint66c, checkpoint66b, checkpoint66a, checkpoint66o, checkpoint66n, checkpoint66m, checkpoint66l, checkpoint66k, checkpoint66j, checkpoint66i, checkpoint66h, checkpoint58x_post, checkpoint65z, checkpoint65x, checkpoint65y, checkpoint65r, checkpoint65s, checkpoint65p, checkpoint65q, checkpoint65v, checkpoint65w, checkpoint65t, checkpoint65u, checkpoint65j, checkpoint65k, checkpoint65h, checkpoint65i, checkpoint65n, checkpoint65o, checkpoint65l, checkpoint65m, checkpoint65b, checkpoint65c, checkpoint65a, checkpoint65f, checkpoint65g, checkpoint65d, checkpoint65e, checkpoint59q, checkpoint59p, checkpoint59r, checkpoint59e, checkpoint59d, checkpoint59g, checkpoint59f, checkpoint59a, checkpoint59c, checkpoint59b, checkpoint59m, checkpoint59l, checkpoint59o, checkpoint59n, checkpoint59i, checkpoint59h, checkpoint59k, checkpoint59j, checkpoint59, checkpoint62c, checkpoint62b, checkpoint62a, checkpoint62g, checkpoint62f, checkpoint62e, checkpoint62d, checkpoint62k, checkpoint62j, checkpoint62i, checkpoint62h, checkpoint62o, checkpoint62n, checkpoint62m, checkpoint62l, checkpoint62s, checkpoint62r, checkpoint62q, checkpoint62p, checkpoint62w, checkpoint62v, checkpoint62u, checkpoint62t, checkpoint62z, checkpoint62y, checkpoint62x, checkpoint58y_post, checkpoint61f, checkpoint61g, checkpoint61d, checkpoint61e, checkpoint61b, checkpoint61c, checkpoint61a, checkpoint61n, checkpoint61o, checkpoint61l, checkpoint61m, checkpoint61j, checkpoint61k, checkpoint61h, checkpoint61i, checkpoint61v, checkpoint61w, checkpoint61t, checkpoint61u, checkpoint61r, checkpoint61s, checkpoint61p, checkpoint61q, checkpoint61z, checkpoint61x, checkpoint61y, HEAD
Changes since 1.1: +3 -0 lines
add $Header:  $ and $Name:  & (for CVS)

1 function [c] = cm_landwater(n,varargin)
2 % [c] = cm_landwater(n)
3 % [c] = cm_landwater(n,f)
4 %
5 % n - is size of color map
6 % f is scalar fraction that should be water (default=0.5)
7 % or vector [hmin hmax] from which f will be calculated
8 %
9 % e.g.
10 % >> cm_landwater(64,caxis);
11 %
12 % Green-yellor land/blue water colormap
13
14 % $Header: $
15 % $Name: $
16
17 if nargin==1
18 f=0.5;
19 else
20 f=varargin{1};
21 end
22
23 if prod(size(f))==2
24 hmin=f(1);hmax=f(2);
25 f=-hmin/(hmax-hmin);
26 f=max(0,f);f=min(1,f);
27 end
28
29 if mod(n,2)==0
30 nb=round(n*f(1));
31 ng=n-nb;
32 nw=0;
33 else
34 nb=floor(n*f(1));
35 nw=1;
36 ng=n-nb-nw;
37 end
38 b=bluewater(nb);
39 g=greenland(ng);
40 w=ones(nw,1)*[1 1 0.55];
41
42 c=[b' w' g']';
43 if nargout==0
44 colormap(c);
45 end
46
47 %subplot(211)
48 %plot((0:(n-1))/(n-1),c(:,3:-1:1))
49 %subplot(212)
50 %pcol([-1:.1/n:1])
51 %axis off
52
53 % ----------------------------------------------------
54 function [c] = bluewater(n)
55 % Blue colormap
56
57 x=(0:n-1)'/(n-1);
58 c=((.7-.7*x)*[1 1 0]+max(0,(1-.65*x))*[0 0 1]);
59 c=c(end:-1:1,:);
60 %colormap(c);
61 % ----------------------------------------------------
62 function [c] = greenland(n)
63 % Green land colormap
64
65 x=(0:n-1)'/(n-1);
66 r=max(0,(-.25+1.8*x));
67 g=.4*(1+2.5*x);
68 b=0.5*max(0,(-.25+2.0*x));
69 i=find(r>1);
70 r(i)=max( 1.7-1*x(i), b(i));
71 i=find(g>1);
72 g(i)=max( 1.5-1*x(i), b(i));
73 c=r*[1 0 0]+g*[0 1 0]+b*[0 0 1];
74 c=min(max(0,c),1);
75 %colormap(c);
76 % ----------------------------------------------------

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