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Contents of /MITgcm/utils/matlab/longitude.m

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

1 function [X] = longitude(x)
2 % X=longitude(x);
3 %
4 % tries to determine best range of longitude (e.g. -180<180 or 0<360)
5 % so that coordinate (x) doesn't span a discontinuity.
6 %
8 % also works for radians which are assumed if range of x<=2*pi
10 % $Header: $
11 % $Name: $
13 minx=min(min(min(x)));
14 maxx=max(max(max(x)));
15 %if maxx-minx < 2.2*pi
16 % units=180/pi;
17 %else
18 units=1;
19 %end
20 minx=min(min(min(x*units)));
21 maxx=max(max(max(x*units)));
23 X=mod(720+x*units,360);
24 maxP=max(max(max(X)));
25 minP=min(min(min(X)));
27 XX=mod(X+180,360)-180;
28 maxM=max(max(max(XX)));
29 minM=min(min(min(XX)));
31 if maxP-minP > maxM-minM
32 X=XX;
33 end

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