matlab_class/sample_processing/example_interp.m


%%%%%%%%%%%%%%%%%
%load parameters:
%%%%%%%%%%%%%%%%%
choiceV3orV4='v4'

if ~isempty(choiceV3orV4)&isempty(whos('mygrid'));
  gcmfaces_path;
  dir0=[mydir '/sample_input/'];
  dirGrid=[dir0 '/GRID' choiceV3orV4  '/'];
  dirIn=[dir0 '/SAMPLE' choiceV3orV4  '/'];
  if strcmp(choiceV3orV4,'v4'); nF=5; else; nF=1; end;
  global mygrid; mygrid=[]; grid_load(dirGrid,nF);
end;

%%%%%%%%%%%%%%%%%%%%%%%
%get sample data: V3 SSH
dirV3=[mydir '/sample_input/SAMPLEv3/'];
etan=rdmds([dirV3 'DDetan'],0); etan(etan==0)=NaN;
dirV3=[mydir '/sample_input/GRIDv3/'];
lon=rdmds([dirV3 'XC']); lat=rdmds([dirV3 'YC']);

%%%%%%%%%%%%%%%%%%%%%%%
%do the interpolation:
x=[lon-360;lon]; y=[lat;lat]; z=[etan;etan];

z_interp=gcmfaces(5);
for ii=1:5;
xi=mygrid.XC{ii}; yi=mygrid.YC{ii};
zi = interp2(x',y',z',xi,yi);
z_interp{ii}=zi;
end;

%%%%%%%%%%%%%%%%%%%%%%%
%illustrate the result:

figure; set(gcf,'Units','Normalized','Position',[0.1 0.3 0.4 0.6]);
x=[lon-360;lon]; y=[lat;lat]; z=[etan;etan];
pcolor(x,y,z); axis([-180 180 -90 90]); shading flat; caxis([-2 1]); colorbar;

figure; set(gcf,'Units','Normalized','Position',[0.5 0.3 0.4 0.6]);
[X,Y,FLD]=convert2pcol(mygrid.XC,mygrid.YC,z_interp);
pcolor(X,Y,FLD); axis([-180 180 -90 90]); shading flat; caxis([-2 1]); colorbar;


1	gforget	1.1
2			%%%%%%%%%%%%%%%%%
3			%load parameters:
4			%%%%%%%%%%%%%%%%%
5			choiceV3orV4='v4'
6
7	gforget	1.2	if ~isempty(choiceV3orV4)&isempty(whos('mygrid'));
8	gforget	1.1	gcmfaces_path;
9	gforget	1.5	dir0=[mydir '/sample_input/'];
10	gforget	1.4	dirGrid=[dir0 '/GRID' choiceV3orV4 '/'];
11			dirIn=[dir0 '/SAMPLE' choiceV3orV4 '/'];
12	gforget	1.2	if strcmp(choiceV3orV4,'v4'); nF=5; else; nF=1; end;
13			global mygrid; mygrid=[]; grid_load(dirGrid,nF);
14	gforget	1.1	end;
15
16			%%%%%%%%%%%%%%%%%%%%%%%
17	gforget	1.2	%get sample data: V3 SSH
18	gforget	1.5	dirV3=[mydir '/sample_input/SAMPLEv3/'];
19	gforget	1.2	etan=rdmds([dirV3 'DDetan'],0); etan(etan==0)=NaN;
20	gforget	1.5	dirV3=[mydir '/sample_input/GRIDv3/'];
21	gforget	1.2	lon=rdmds([dirV3 'XC']); lat=rdmds([dirV3 'YC']);
22	gforget	1.1
23			%%%%%%%%%%%%%%%%%%%%%%%
24			%do the interpolation:
25			x=[lon-360;lon]; y=[lat;lat]; z=[etan;etan];
26
27			z_interp=gcmfaces(5);
28			for ii=1:5;
29			xi=mygrid.XC{ii}; yi=mygrid.YC{ii};
30			zi = interp2(x',y',z',xi,yi);
31			z_interp{ii}=zi;
32			end;
33
34			%%%%%%%%%%%%%%%%%%%%%%%
35			%illustrate the result:
36
37			figure; set(gcf,'Units','Normalized','Position',[0.1 0.3 0.4 0.6]);
38			x=[lon-360;lon]; y=[lat;lat]; z=[etan;etan];
39			pcolor(x,y,z); axis([-180 180 -90 90]); shading flat; caxis([-2 1]); colorbar;
40
41			figure; set(gcf,'Units','Normalized','Position',[0.5 0.3 0.4 0.6]);
42			[X,Y,FLD]=convert2pcol(mygrid.XC,mygrid.YC,z_interp);
43			pcolor(X,Y,FLD); axis([-180 180 -90 90]); shading flat; caxis([-2 1]); colorbar;
44
45
46