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% Copyright (C) 2013 Alexander Barth <barth.alexander@gmail.com>
% Copyright (C) 2019 John D <john.donoghue@ieee.org>
%
% This program is free software; you can redistribute it and/or modify
% it under the terms of the GNU General Public License as published by
% the Free Software Foundation; either version 3 of the License, or
% (at your option) any later version.
%
% This program is distributed in the hope that it will be useful,
% but WITHOUT ANY WARRANTY; without even the implied warranty of
% MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
% GNU General Public License for more details.
%
% You should have received a copy of the GNU General Public License
% along with this program; If not, see <http://www.gnu.org/licenses/>.
% Test ncBaseArray, ncCatArray and ncArray.
function test_ncarray_nan()
% for octave prior to 3.8.0
if isempty(which('isequaln'))
isequaln = @(x,y) isequalwithequalnans(x,y);
end
varname = 'SST';
tmpdir = tempname;
mkdir(tmpdir);
tmpfname = tempname(tmpdir);
dataref = randn(220,144,3);
%dataref(rand(size(dataref)) > 0.7) = NaN;
dataref(50:80,30:90,1:2) = NaN;
for i = 1:3
files{i} = fullfile(tmpdir,sprintf('file%d.nc',i));
ncarray_example_file(files{i},dataref(:,:,i));
end
data = ncCatArray(3,files,varname);
reddata = nanmean(data,3);
if exist ("nanmean")
reddataref = nanmean(dataref,3);
else
reddataref = mean(dataref,3, 'omitnan');
endif
assertAlmostEqual(reddata, reddataref)
reddata = nansum(data,3);
reddataref = nansum(dataref,3);
assertAlmostEqual(reddata, reddataref)
reddata = nanvar(data,[],3);
if exist ("nanvar")
reddataref = nanvar(dataref,[],3);
else
reddataref = var(dataref,[],3, 'omitnan');
endif
diff = reddata - reddataref;
assert(max(diff(:)) < 1e-6)
reddata = nanstd(data,[],3);
if exist ("nanstd")
reddataref = nanstd(dataref,[],3);
else
reddataref = std(dataref,[],3, 'omitnan');
endif
diff = reddata - reddataref;
assert(max(diff(:)) < 1e-6)
% clean-up
for i = 1:3
delete(files{i});
end
rmdir(tmpdir);
endfunction
%!test
%! test_ncarray_nan ()
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