matlab_class/gcmfaces_calc/gcmfaces_bindata.m

function [varargout]=gcmfaces_bindata(varargin);
%object:    compute delaunay triangulation, then bin averaging
%inputs:    are all optional, triggering different sections of the code
%   if   none          then generate the very triangulation (myTri)
%   if   lon,lat       vectors, then compute closest neighbor index(ices)
%   if   lon,lat,obs   vectors, then further do the bin average
%outputs:   are all optional, triggering different sections of the code
%   if   OBS            then return the bin aberage
%   if   OBS,NOBS       then return the bin sum and count
%
%note: should mytri become part of mygrid ?

warning('off','MATLAB:dsearch:DeprecatedFunction');

global mygrid mytri myenv;

if ~isfield(myenv,'useDelaunayTri');
    myenv.useDelaunayTri=~isempty(which('DelaunayTri'));
end;

if nargin==0;
    %generate delaunay triangulation:
    XC=convert2array(mygrid.XC);
    YC=convert2array(mygrid.YC);
    if myenv.useDelaunayTri;
        %the new way, using DelaunayTri&nearestNeighbor
        mytri=[];
        kk=find(~isnan(XC)); mytri.kk=kk;
        [mytri.ii,mytri.jj]=find(~isnan(XC));
        mytri.TRI=DelaunayTri(XC(kk),YC(kk));
    else;
        %the old way, using delaunay&dsearch
        mytri=[];
        %needed so that we do not loose data
        XC(isnan(XC))=270;
        YC(isnan(YC))=180;
        %
        TRI=delaunay(XC,YC); nxy = prod(size(XC));
        Stri=sparse(TRI(:,[1 1 2 2 3 3]),TRI(:,[2 3 1 3 1 2]),1,nxy,nxy);
        %
        mytri.XC=XC; mytri.YC=YC; mytri.TRI=TRI; mytri.Stri=Stri;
        %
        tmp1=XC; tmp1(:)=1; mytri.kk=find(tmp1);
        [mytri.ii,mytri.jj]=find(tmp1); 
        %usage: kk=dsearch(mytri.XC,mytri.YC,mytri.TRI,lon,lat,mytri.Stri);
        %       where lon and lat are vector of position
    end
elseif nargin==2;
    %compute grid point vector associated with lon/lat vectors
    lon=varargin{1}; lat=varargin{2};
    if myenv.useDelaunayTri;
        kk = mytri.TRI.nearestNeighbor(lon,lat);
    else;
        kk=dsearch(mytri.XC,mytri.YC,mytri.TRI,lon,lat,mytri.Stri);
    end;
    if nargout==1;
        varargout={mytri.kk(kk)};
    elseif nargout==2;
        ii=mytri.ii(kk); jj=mytri.jj(kk);
        varargout={ii}; varargout(2)={jj};
    else;
        error('wrong output choice');
    end;
elseif nargin==3;
    %do the bin average (if nargout==1) or the bin sum+count (if nargout==2)
    lon=varargin{1}; lat=varargin{2}; obs=varargin{3};
    ii=find(~isnan(obs)); lon=lon(ii); lat=lat(ii); obs=obs(ii);
    if myenv.useDelaunayTri;
        kk = mytri.TRI.nearestNeighbor(lon,lat);
    else;
        kk=dsearch(mytri.XC,mytri.YC,mytri.TRI,lon,lat,mytri.Stri);
    end;
    kk=mytri.kk(kk);
    
    OBS=convert2array(mygrid.XC); 
    OBS(:)=0; NOBS=OBS;
    for k=1:length(kk)
        NOBS(kk(k))=NOBS(kk(k))+1;
        OBS(kk(k))=OBS(kk(k))+obs(k);
    end  % k=1:length(kk)
    
    if nargout==1;%output bin average
        in=find(NOBS); OBS(in)=OBS(in)./NOBS(in);
        in=find(~NOBS); OBS(in)=NaN; NOBS(in)=NaN;
        varargout={convert2array(OBS)};
    elseif nargout==2;%output bin sum+count
        OBS=convert2array(OBS);
        NOBS=convert2array(NOBS);
        varargout={OBS}; varargout(2)={NOBS};
    else;
        error('wrong output choice');
    end;
    
else;
    error('wrong input choice');
end;

warning('on','MATLAB:dsearch:DeprecatedFunction');


1	gforget	1.1	function [varargout]=gcmfaces_bindata(varargin);
2	gforget	1.4	%object: compute delaunay triangulation, then bin averaging
3			%inputs: are all optional, triggering different sections of the code
4			% if none then generate the very triangulation (myTri)
5			% if lon,lat vectors, then compute closest neighbor index(ices)
6			% if lon,lat,obs vectors, then further do the bin average
7			%outputs: are all optional, triggering different sections of the code
8			% if OBS then return the bin aberage
9			% if OBS,NOBS then return the bin sum and count
10			%
11			%note: should mytri become part of mygrid ?
12	gforget	1.1
13	gforget	1.2	warning('off','MATLAB:dsearch:DeprecatedFunction');
14
15	gforget	1.6	global mygrid mytri myenv;
16
17			if ~isfield(myenv,'useDelaunayTri');
18			myenv.useDelaunayTri=~isempty(which('DelaunayTri'));
19			end;
20	gforget	1.1
21			if nargin==0;
22	gforget	1.5	%generate delaunay triangulation:
23			XC=convert2array(mygrid.XC);
24			YC=convert2array(mygrid.YC);
25	gforget	1.6	if myenv.useDelaunayTri;
26			%the new way, using DelaunayTri&nearestNeighbor
27			mytri=[];
28			kk=find(~isnan(XC)); mytri.kk=kk;
29			[mytri.ii,mytri.jj]=find(~isnan(XC));
30			mytri.TRI=DelaunayTri(XC(kk),YC(kk));
31			else;
32			%the old way, using delaunay&dsearch
33			mytri=[];
34			%needed so that we do not loose data
35			XC(isnan(XC))=270;
36			YC(isnan(YC))=180;
37			%
38			TRI=delaunay(XC,YC); nxy = prod(size(XC));
39			Stri=sparse(TRI(:,[1 1 2 2 3 3]),TRI(:,[2 3 1 3 1 2]),1,nxy,nxy);
40			%
41			mytri.XC=XC; mytri.YC=YC; mytri.TRI=TRI; mytri.Stri=Stri;
42			%
43			tmp1=XC; tmp1(:)=1; mytri.kk=find(tmp1);
44			[mytri.ii,mytri.jj]=find(tmp1);
45			%usage: kk=dsearch(mytri.XC,mytri.YC,mytri.TRI,lon,lat,mytri.Stri);
46			% where lon and lat are vector of position
47			end
48	gforget	1.1	elseif nargin==2;
49	gforget	1.5	%compute grid point vector associated with lon/lat vectors
50			lon=varargin{1}; lat=varargin{2};
51	gforget	1.6	if myenv.useDelaunayTri;
52			kk = mytri.TRI.nearestNeighbor(lon,lat);
53			else;
54			kk=dsearch(mytri.XC,mytri.YC,mytri.TRI,lon,lat,mytri.Stri);
55			end;
56	gforget	1.5	if nargout==1;
57			varargout={mytri.kk(kk)};
58			elseif nargout==2;
59			ii=mytri.ii(kk); jj=mytri.jj(kk);
60			varargout={ii}; varargout(2)={jj};
61			else;
62			error('wrong output choice');
63			end;
64	gforget	1.1	elseif nargin==3;
65	gforget	1.5	%do the bin average (if nargout==1) or the bin sum+count (if nargout==2)
66			lon=varargin{1}; lat=varargin{2}; obs=varargin{3};
67			ii=find(~isnan(obs)); lon=lon(ii); lat=lat(ii); obs=obs(ii);
68	gforget	1.6	if myenv.useDelaunayTri;
69			kk = mytri.TRI.nearestNeighbor(lon,lat);
70			else;
71			kk=dsearch(mytri.XC,mytri.YC,mytri.TRI,lon,lat,mytri.Stri);
72			end;
73	gforget	1.5	kk=mytri.kk(kk);
74
75	gforget	1.6	OBS=convert2array(mygrid.XC);
76	gforget	1.5	OBS(:)=0; NOBS=OBS;
77			for k=1:length(kk)
78			NOBS(kk(k))=NOBS(kk(k))+1;
79			OBS(kk(k))=OBS(kk(k))+obs(k);
80			end % k=1:length(kk)
81
82			if nargout==1;%output bin average
83			in=find(NOBS); OBS(in)=OBS(in)./NOBS(in);
84			in=find(~NOBS); OBS(in)=NaN; NOBS(in)=NaN;
85			varargout={convert2array(OBS)};
86			elseif nargout==2;%output bin sum+count
87			OBS=convert2array(OBS);
88			NOBS=convert2array(NOBS);
89			varargout={OBS}; varargout(2)={NOBS};
90			else;
91			error('wrong output choice');
92			end;
93
94	gforget	1.1	else;
95	gforget	1.5	error('wrong input choice');
96	gforget	1.1	end;
97
98	gforget	1.2	warning('on','MATLAB:dsearch:DeprecatedFunction');
99	gforget	1.1
100
101