profilesMatlabProcessing/profiles_misc/ncload.m

function theResult = 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);

result = varargin;

if nargout > 0
    theResult = result
else
    ncans(result)
end

1	function theResult = 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; if isempty(useNativeMatlabNetcdf); useNativeMatlabNetcdf = ~isempty(which('netcdf.open')); end;
10
11	f = ncopen(fileIn, 'nowrite');
12	if isempty(f), return, end
13	vars=ncvars(f);
14	if isempty(varargin); varargin = vars; end;
15
16	if (useNativeMatlabNetcdf);
17
18	for i = 1:length(varargin)
19	if sum(strcmp(vars,varargin{i}))>0;
20	%get variable
21	varid = netcdf.inqVarID(f,varargin{i});
22	aa=netcdf.getVar(f,varid);
23	%inverse the order of dimensions
24	bb=length(size(aa)); aa=permute(aa,[bb:-1:1]);
25	%replace missing value with NaN
26	[atts]=ncatts(f,varid);
27	if strcmp(atts,'missing_value')&isreal(aa);
28	spval = double(netcdf.getAtt(f,varid,'missing_value'));
29	elseif strcmp(atts,'_FillValue')&isreal(aa);
30	spval = double(netcdf.getAtt(f,varid,'_FillValue'));
31	else;
32	spval=[];
33	end;
34	if ~isempty(spval); aa(aa==spval)=NaN; end;
35	else;
36	aa=[];
37	end;
38	assignin('caller', varargin{i}, aa)
39	end
40
41
42
43
44	else;%try to use old mex stuff
45
46
47	for i = 1:length(varargin)
48	if ~isstr(varargin{i}), varargin{i} = inputname(i+1); end
49	oldfld = f{varargin{i}}(:);
50	spval = f{varargin{i}}.missing_value(:);
51	if isempty(spval);
52	spval = f{varargin{i}}.FillValue_(:);
53	end
54	fld = oldfld;
55	if ~isempty(spval)&~ischar(fld);
56	replace = find(oldfld == spval);
57	nreplace = length(replace);
58	if nreplace>0
59	fld(replace) = NaN*ones(1,nreplace);
60	end %if
61	end %if
62	%NaN-substitution messes up backward compatibility so I comment it out
63	% assignin('caller', varargin{i}, fld);
64	%and revert to oldfld
65	assignin('caller', varargin{i}, oldfld)
66	end
67
68	end
69
70	ncclose(f);
71
72	result = varargin;
73
74	if nargout > 0
75	theResult = result
76	else
77	ncans(result)
78	end
79