/[MITgcm]/MITgcm_contrib/gael/matlab_class/gcmfaces_convert/convert2pcol_cube.m
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Contents of /MITgcm_contrib/gael/matlab_class/gcmfaces_convert/convert2pcol_cube.m

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Revision 1.4 - (show annotations) (download)
Sat Jan 18 21:11:00 2014 UTC (11 years, 6 months ago) by gforget
Branch: MAIN
CVS Tags: checkpoint65x, checkpoint65r, checkpoint65p, checkpoint65q, checkpoint65v, checkpoint65w, checkpoint65t, checkpoint65u, checkpoint66f, checkpoint66e, checkpoint66d, checkpoint66c, checkpoint66b, checkpoint66a, checkpoint66o, HEAD
Changes since 1.3: +1 -0 lines 
- convert2array.m : hook to xtrct
- convert2array_llc.m : remove loops for speed up
- convert2pcol.m : hook to xtrct
- convert2pcol_cube.m, convert2pcol_llc.m :
  replicate field to facilitate Pacific centric maps
1 function [X,Y,FLD]=convert2pcol_cube(x,y,fld,varargin);
2 %object: gcmfaces to 'pcolor format' conversion
3 %inputs: x is longitude (e.g. mygrid.XC)
4 % y is latitude (e.g. mygrid.YC)
5 % fld is the 2D field of interest (e.g. mygrid.hFacC(:,:,1))
6 %outputs: X,Y,FLD are array versions of x,y,fld
7 %
8 %note: this function is designed so that one may readily
9 % plot the output in geographic coordinates
10 % using e.g. 'figure; pcolor(X,Y,FLD);'
11
12 k3=1; k4=1;
13
14 %ASSEMBLE SIDE FACES:
15 %----------------------
16 X=[x{1};x{2};sym_g(x{4},7,0); sym_g(x{5},7,0)];
17 Y=[y{1};y{2};sym_g(y{4},7,0); sym_g(y{5},7,0)];
18 FLD=[fld{1}(:,:,k3,k4);fld{2}(:,:,k3,k4);sym_g(fld{4}(:,:,k3,k4),7,0);sym_g(fld{5}(:,:,k3,k4),7,0)];
19
20 %ADD NORTH FACE:
21 %---------------
22 pp=x{3};
23 M1=pp; M1(M1>M1(1,1))=NaN; M1(M1<M1(1,end))=NaN; M1(~isnan(M1))=1;
24 %M2=pp; M2(M2>M2(end,1))=NaN; M2(M2<M2(1,1))=NaN; M2(~isnan(M2))=1;
25 M2=pp; M2(pp<0)=NaN; M2(pp>=0)=1;
26 M3=pp; M3(M3<M3(end,1)&M3>M3(end,end))=NaN; M3(~isnan(M3))=1;
27 %M4=pp; M4(M4>M4(1,end))=NaN; M4(M4<M4(end,end))=NaN; M4(~isnan(M4))=1;
28 M4=pp; M4(pp>=0)=NaN; M4(pp<0)=1;
29
30 pp=x{3}; Xp=[sym_g(pp.*M1,5,0);pp.*M2;sym_g(pp.*M3,7,0);sym_g(pp.*M4,6,0)]; X=[X Xp];
31 pp=y{3}; Yp=[sym_g(pp.*M1,5,0);pp.*M2;sym_g(pp.*M3,7,0);sym_g(pp.*M4,6,0)]; Y=[Y Yp];
32 pp=fld{3}(:,:,k3,k4); FLDp=[sym_g(pp.*M1,5,0);pp.*M2;sym_g(pp.*M3,7,0);sym_g(pp.*M4,6,0)]; FLD=[FLD FLDp];
33
34 %ADD SOUTH FACE:
35 %--------------
36 pp=x{6};
37 M1=pp; M1(M1>M1(end,end))=NaN; M1(M1<M1(1,end))=NaN; M1(~isnan(M1))=1;
38 %M2=pp; M2(M2>M2(end,1))=NaN; M2(M2<M2(end,end))=NaN; M2(~isnan(M2))=1;
39 M2=pp; M2(pp<0)=NaN; M2(pp>=0)=1;
40 M3=pp; M3(M3<M3(end,1)&M3>M3(1,1))=NaN; M3(~isnan(M3))=1;
41 %M4=pp; M4(M4>M4(1,end))=NaN; M4(M4<M4(1,1))=NaN; M4(~isnan(M4))=1;
42 M4=pp; M4(pp>=0)=NaN; M4(pp<0)=1;
43
44 pp=x{6}; Xp=[pp.*M1;sym_g(pp.*M2,5,0);sym_g(pp.*M3,6,0);sym_g(pp.*M4,7,0)]; X=[Xp X];
45 pp=y{6}; Yp=[pp.*M1;sym_g(pp.*M2,5,0);sym_g(pp.*M3,6,0);sym_g(pp.*M4,7,0)]; Y=[Yp Y];
46 pp=fld{6}(:,:,k3,k4); FLDp=[pp.*M1;sym_g(pp.*M2,5,0);sym_g(pp.*M3,6,0);sym_g(pp.*M4,7,0)]; FLD=[FLDp FLD];
47
48
49 %FIX DATE CHANGE LINE IN LATLON PART:
50 %--------------------------------------
51 %X=circshift(X,[-240 0]); Y=circshift(Y,[-240 0]); FLD=circshift(FLD,[-240 0]);
52 if size(x{1},1)==32; X=circshift(X,[+48 0]); Y=circshift(Y,[+48 0]); FLD=circshift(FLD,[+48 0]);
53 elseif size(x{1},1)==510; X=circshift(X,[+765 0]); Y=circshift(Y,[+765 0]); FLD=circshift(FLD,[+765 0]);
54 else; nn=size(x{1},1)*1.5; X=circshift(X,[+nn 0]); Y=circshift(Y,[+nn 0]); FLD=circshift(FLD,[+nn 0]);
55 warning('you may want to check that the -180 line is the first column\n');
56 end;
57
58 X=[X-360;X;X+360]; Y=[Y;Y;Y]; FLD=[FLD;FLD;FLD];
59
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