Warning, /utils/matlab/longitude.m is written in an unsupported language. File is not indexed.
view on githubraw file Latest commit add29e06 on 2018-01-31 20:35:05 UTC
ca96c02aee Alis*0001 function [X] = longitude(x)
0002 % X=longitude(x);
0003 %
0004 % tries to determine best range of longitude (e.g. -180<180 or 0<360)
0005 % so that coordinate (x) doesn't span a discontinuity.
0006 %
0007
0008 % also works for radians which are assumed if range of x<=2*pi
0009
0010 minx=min(min(min(x)));
0011 maxx=max(max(max(x)));
0012 %if maxx-minx < 2.2*pi
0013 % units=180/pi;
0014 %else
0015 units=1;
0016 %end
0017 minx=min(min(min(x*units)));
0018 maxx=max(max(max(x*units)));
0019
0020 X=mod(720+x*units,360);
0021 maxP=max(max(max(X)));
0022 minP=min(min(min(X)));
0023
0024 XX=mod(X+180,360)-180;
0025 maxM=max(max(max(XX)));
0026 minM=min(min(min(XX)));
0027
0028 if maxP-minP > maxM-minM
0029 X=XX;
0030 end
