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);
    mytri=[];
    kk=find(~isnan(XC)); mytri.kk=kk;
    [mytri.ii,mytri.jj]=find(~isnan(XC));
    if myenv.useDelaunayTri;
        %the new way, using DelaunayTri&nearestNeighbor
        mytri.TRI=DelaunayTri(XC(kk),YC(kk));
    else;
        %the old way, using delaunay&dsearch
        TRI=delaunay(XC(kk),YC(kk)); nxy = length(kk);
        Stri=sparse(TRI(:,[1 1 2 2 3 3]),TRI(:,[2 3 1 3 1 2]),1,nxy,nxy);
        mytri.XC=XC(mytri.kk); mytri.YC=YC(mytri.kk); 
        mytri.TRI=TRI; mytri.Stri=Stri;
        %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	1.7	mytri=[];
26			kk=find(~isnan(XC)); mytri.kk=kk;
27			[mytri.ii,mytri.jj]=find(~isnan(XC));
28	gforget	1.6	if myenv.useDelaunayTri;
29			%the new way, using DelaunayTri&nearestNeighbor
30			mytri.TRI=DelaunayTri(XC(kk),YC(kk));
31			else;
32			%the old way, using delaunay&dsearch
33	gforget	1.7	TRI=delaunay(XC(kk),YC(kk)); nxy = length(kk);
34	gforget	1.6	Stri=sparse(TRI(:,[1 1 2 2 3 3]),TRI(:,[2 3 1 3 1 2]),1,nxy,nxy);
35	gforget	1.7	mytri.XC=XC(mytri.kk); mytri.YC=YC(mytri.kk);
36			mytri.TRI=TRI; mytri.Stri=Stri;
37	gforget	1.6	%usage: kk=dsearch(mytri.XC,mytri.YC,mytri.TRI,lon,lat,mytri.Stri);
38			% where lon and lat are vector of position
39			end
40	gforget	1.1	elseif nargin==2;
41	gforget	1.5	%compute grid point vector associated with lon/lat vectors
42			lon=varargin{1}; lat=varargin{2};
43	gforget	1.6	if myenv.useDelaunayTri;
44			kk = mytri.TRI.nearestNeighbor(lon,lat);
45			else;
46			kk=dsearch(mytri.XC,mytri.YC,mytri.TRI,lon,lat,mytri.Stri);
47			end;
48	gforget	1.5	if nargout==1;
49			varargout={mytri.kk(kk)};
50			elseif nargout==2;
51			ii=mytri.ii(kk); jj=mytri.jj(kk);
52			varargout={ii}; varargout(2)={jj};
53			else;
54			error('wrong output choice');
55			end;
56	gforget	1.1	elseif nargin==3;
57	gforget	1.5	%do the bin average (if nargout==1) or the bin sum+count (if nargout==2)
58			lon=varargin{1}; lat=varargin{2}; obs=varargin{3};
59			ii=find(~isnan(obs)); lon=lon(ii); lat=lat(ii); obs=obs(ii);
60	gforget	1.6	if myenv.useDelaunayTri;
61			kk = mytri.TRI.nearestNeighbor(lon,lat);
62			else;
63			kk=dsearch(mytri.XC,mytri.YC,mytri.TRI,lon,lat,mytri.Stri);
64			end;
65	gforget	1.5	kk=mytri.kk(kk);
66
67	gforget	1.6	OBS=convert2array(mygrid.XC);
68	gforget	1.5	OBS(:)=0; NOBS=OBS;
69			for k=1:length(kk)
70			NOBS(kk(k))=NOBS(kk(k))+1;
71			OBS(kk(k))=OBS(kk(k))+obs(k);
72			end % k=1:length(kk)
73
74			if nargout==1;%output bin average
75			in=find(NOBS); OBS(in)=OBS(in)./NOBS(in);
76			in=find(~NOBS); OBS(in)=NaN; NOBS(in)=NaN;
77			varargout={convert2array(OBS)};
78			elseif nargout==2;%output bin sum+count
79			OBS=convert2array(OBS);
80			NOBS=convert2array(NOBS);
81			varargout={OBS}; varargout(2)={NOBS};
82			else;
83			error('wrong output choice');
84			end;
85
86	gforget	1.1	else;
87	gforget	1.5	error('wrong input choice');
88	gforget	1.1	end;
89
90	gforget	1.2	warning('on','MATLAB:dsearch:DeprecatedFunction');
91	gforget	1.1
92
93