matlab_class/gcmfaces_IO/ncload.m

function [] = ncload(fileIn, varargin);

% ncload -- Load NetCDF variables.
%  ncload('fileIn', 'var1', 'var2', ...) loads the
%   given variables of 'fileIn' into the Matlab
%   workspace of the "caller" of this routine.  If no names
%   are given, all variables are loaded.

global useNativeMatlabNetcdf; 
if isempty(useNativeMatlabNetcdf); useNativeMatlabNetcdf = ~isempty(which('netcdf.open')); end;

f = ncopen(fileIn, 'nowrite');
if isempty(f), return, end
vars=ncvars(f);
if isempty(varargin); varargin = vars; end;

if (useNativeMatlabNetcdf);
    
    for i = 1:length(varargin)
        if sum(strcmp(vars,varargin{i}))>0;
            %get variable
            varid = netcdf.inqVarID(f,varargin{i});
            aa=netcdf.getVar(f,varid);
            %inverse the order of dimensions
            bb=length(size(aa)); aa=permute(aa,[bb:-1:1]);
            %replace missing value with NaN
            [atts]=ncatts(f,varid);
            if strcmp(atts,'missing_value')&isreal(aa);
                spval = double(netcdf.getAtt(f,varid,'missing_value'));
            elseif strcmp(atts,'_FillValue')&isreal(aa);
                spval = double(netcdf.getAtt(f,varid,'_FillValue'));
            else;
                spval=[];
            end;
            if ~isempty(spval); aa(aa==spval)=NaN; end;
        else;
            aa=[];
        end;
        assignin('caller', varargin{i}, aa)
    end
    
    
    
    
else;%try to use old mex stuff
    
    
    for i = 1:length(varargin)
        if ~isstr(varargin{i}), varargin{i} = inputname(i+1); end
        oldfld = f{varargin{i}}(:);
        spval = f{varargin{i}}.missing_value(:);
        if isempty(spval);
            spval = f{varargin{i}}.FillValue_(:);
        end
        fld = oldfld;
        if ~isempty(spval)&~ischar(fld);
            replace = find(oldfld == spval);
            nreplace = length(replace);
            if nreplace>0
                fld(replace) = NaN*ones(1,nreplace);
            end %if
        end %if
        %NaN-substitution messes up backward compatibility so I comment it out
        %        assignin('caller', varargin{i}, fld);
        %and revert to oldfld
        assignin('caller', varargin{i}, oldfld)
    end
    
end

ncclose(f);

1	gforget	1.1	function [] = ncload(fileIn, varargin);
2
3			% ncload -- Load NetCDF variables.
4			% ncload('fileIn', 'var1', 'var2', ...) loads the
5			% given variables of 'fileIn' into the Matlab
6			% workspace of the "caller" of this routine. If no names
7			% are given, all variables are loaded.
8
9			global useNativeMatlabNetcdf;
10			if isempty(useNativeMatlabNetcdf); useNativeMatlabNetcdf = ~isempty(which('netcdf.open')); end;
11
12			f = ncopen(fileIn, 'nowrite');
13			if isempty(f), return, end
14			vars=ncvars(f);
15			if isempty(varargin); varargin = vars; end;
16
17			if (useNativeMatlabNetcdf);
18
19			for i = 1:length(varargin)
20			if sum(strcmp(vars,varargin{i}))>0;
21			%get variable
22			varid = netcdf.inqVarID(f,varargin{i});
23			aa=netcdf.getVar(f,varid);
24			%inverse the order of dimensions
25			bb=length(size(aa)); aa=permute(aa,[bb:-1:1]);
26			%replace missing value with NaN
27			[atts]=ncatts(f,varid);
28			if strcmp(atts,'missing_value')&isreal(aa);
29			spval = double(netcdf.getAtt(f,varid,'missing_value'));
30			elseif strcmp(atts,'_FillValue')&isreal(aa);
31			spval = double(netcdf.getAtt(f,varid,'_FillValue'));
32			else;
33			spval=[];
34			end;
35			if ~isempty(spval); aa(aa==spval)=NaN; end;
36			else;
37			aa=[];
38			end;
39			assignin('caller', varargin{i}, aa)
40			end
41
42
43
44
45			else;%try to use old mex stuff
46
47
48			for i = 1:length(varargin)
49			if ~isstr(varargin{i}), varargin{i} = inputname(i+1); end
50			oldfld = f{varargin{i}}(:);
51			spval = f{varargin{i}}.missing_value(:);
52			if isempty(spval);
53			spval = f{varargin{i}}.FillValue_(:);
54			end
55			fld = oldfld;
56			if ~isempty(spval)&~ischar(fld);
57			replace = find(oldfld == spval);
58			nreplace = length(replace);
59			if nreplace>0
60			fld(replace) = NaN*ones(1,nreplace);
61			end %if
62			end %if
63			%NaN-substitution messes up backward compatibility so I comment it out
64			% assignin('caller', varargin{i}, fld);
65			%and revert to oldfld
66			assignin('caller', varargin{i}, oldfld)
67			end
68
69			end
70
71			ncclose(f);
72