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// Scilab ( http://www.scilab.org/ ) - This file is part of Scilab
// Copyright (C) 2000 - INRIA - Carlos Klimann
//
// This file must be used under the terms of the CeCILL.
// This source file is licensed as described in the file COPYING, which
// you should have received as part of this distribution. The terms
// are also available at
// http://www.cecill.info/licences/Licence_CeCILL_V2.1-en.txt
//
function [m]=nanmedian(x,orient)
//
//For a vector or a matrix x, [m]=median(x) returns in the vector p the
//median of the values (ignoring the NANs) of vector x.
//
//[m]=median(x,'r') (or, equivalently, [m]=pctl(x,1)) are the rowwise
//medians. It returns in each position of the row vector m the medians
//of data (ignoring the NANs) in the corresponding column of x.
//
//[m]=median(x,'c') (or, equivalently, [m]=median(x,2)) are the
//columnwise percentiles. It returns in each position of the column
//vector m the medians of data (ignoring the NANs) in the corresponding
//row of x.
//
//
[lhs,rhs]=argn(0)
if rhs<1|rhs>2 then error(msprintf(gettext("%s: Wrong number of input argument: %d to %d expected.\n"),"nanmedian",1,2)), end
if type(x)<>1 then error(msprintf(gettext("%s: Wrong type for input arguments #%d: Numerical expected.\n"),"nanmedian",1)) , end
if x==[] then m=[], return,end
if rhs==1 then
p=perctl(x(~isnan(x)),50)
if p==[] then p=%nan,end
m=p(1)
elseif orient=="r"|orient==1 then
m=[]
for i=x
p=perctl(i(~isnan(i)),50)
if p==[] then p=%nan,end
m=[m p(1)]
end
elseif orient=="c"|orient==2 then
m=[]
for i=x' do
p=perctl(i(~isnan(i)),50)
if p==[] then p=%nan,end
m=[m;p(1)];
end
else
error(msprintf(gettext("%s: Wrong value for input argument #%d: ''%s'', ''%s'', %d or %d expected.\n"),"nanmedian",3,"r","c",1,2))
end
endfunction
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