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gforget |
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function theResult = ncload(fileIn, varargin); |
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% ncload -- Load NetCDF variables. |
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% ncload('fileIn', 'var1', 'var2', ...) loads the |
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% given variables of 'fileIn' into the Matlab |
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% workspace of the "caller" of this routine. If no names |
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% are given, all variables are loaded. |
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if nargin < 1, help(mfilename), return, end |
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result = []; |
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if nargout > 0, theResult = result; end |
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global useNativeMatlabNetcdf; if isempty(useNativeMatlabNetcdf); useNativeMatlabNetcdf = ~isempty(which('netcdf.open')); end; |
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if (useNativeMatlabNetcdf); |
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f = netcdf.open(fileIn, 'nowrite'); |
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vars=ncvars(f); |
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if isempty(varargin); varargin = vars; end; |
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for i = 1:length(varargin) |
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if sum(strcmp(vars,varargin{i}))>0; |
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%get variable |
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varid = netcdf.inqVarId(f,varargin{i}); |
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aa=netcdf.getVar(f,varid); |
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%inverse the order of dimensions |
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if length(size(aa))>2|size(aa,2)~=1; |
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bb=length(size(aa)); aa=permute(aa,[bb:-1:1]); |
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end; |
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%replace missing value with NaN |
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[atts]=ncatts(f,varid); |
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if strcmp(atts,'missing_value')&isreal(aa); |
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spval = double(netcdf.getAtt(f,varid,'missing_value')); |
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elseif strcmp(atts,'_FillValue')&isreal(aa); |
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spval = double(netcdf.getAtt(f,varid,'_FillValue')); |
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else; |
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spval=[]; |
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end; |
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if ~isempty(spval); aa(aa==spval)=NaN; end; |
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else; |
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aa=[]; |
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end; |
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assignin('caller', varargin{i}, aa) |
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end |
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result = varargin; |
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netcdf.close(f); |
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else;%try to use old mex stuff |
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f = netcdf(fileIn, 'nowrite'); |
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if isempty(f), return, end |
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if isempty(varargin), varargin = ncnames(var(f)); end |
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for i = 1:length(varargin) |
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if ~isstr(varargin{i}), varargin{i} = inputname(i+1); end |
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oldfld = f{varargin{i}}(:); |
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spval = f{varargin{i}}.missing_value(:); |
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if isempty(spval); |
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spval = f{varargin{i}}.FillValue_(:); |
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end |
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fld = oldfld; |
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if ~isempty(spval)&~ischar(fld); |
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replace = find(oldfld == spval); |
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nreplace = length(replace); |
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if nreplace>0 |
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fld(replace) = NaN*ones(1,nreplace); |
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end %if |
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end %if |
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%NaN-substitution messes up backward compatibility so I comment it out |
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% assignin('caller', varargin{i}, fld); |
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%and revert to oldfld |
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assignin('caller', varargin{i}, oldfld) |
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end |
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result = varargin; |
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close(f) |
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if nargout > 0 |
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theResult = result |
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else |
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ncans(result) |
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end |
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end |
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