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// Scilab ( http://www.scilab.org/ ) - This file is part of Scilab
// Copyright (C) 2003 - INRIA - Carlos Klimann
// Copyright (C) 2013 - Scilab Enterprises - Adeline CARNIS
//
// 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 [s]=nancumsum(x,orient)
//
//This function returns in scalar or vector s the sum of the
//values (ignoring the NANs) of a vector or matrix (real or
//complex) x.
//
//This function for a vector or a matrix x, s=nancumsum(x)
//(or, equivalently s=nancumsum(x,'*') returns in scalar s
//the cumulative sum (ignoring the NANs) of all the entries
//of x taken columnwise.
//
//s=nancumsum(x,'r') (or, equivalently, s=nancumsum(x,1))
//returns in the cols(x) sized vector s the cumulative sum
//(ignoring the NANs) of the rows of x:
//s(:,i)=nancumsum(x(:,i))
//
//s=nancumsum(x,'c') (or, equivalently, s=nancumsum(x,2))
//returns in the rows(x) sized vector s the cumulative sum
//(ignoring NANs) of the columns of x:
//s(i,:)=nancumsum(x(i,:))
//
[lhs, rhs] = argn(0)
if lhs > 1 then
error(msprintf(gettext("%s: Wrong number of output argument: %d expected.\n"),"nancumsum",1))
end
if rhs < 1 | rhs > 2 then
error(msprintf(gettext("%s: Wrong number of input argument(s): %d to %d expected.\n"),"nancumsum",1,2))
end
if or(type(x) == [10 15 16]) then
error(msprintf(gettext("%s: Wrong type for input argument #%d: Real or complex, boolean, polynomial matrix expected.\n"), "nancumsum", 1));
end
// cumsum([]) == []
if isempty(x) | and(isnan(x)) then
s = [];
return
end
if rhs == 1 then
orient = "*";
else
if and(type(orient) <> [1 10]) then
error(msprintf(gettext("%s: Wrong type for input argument #%d: A string or scalar expected.\n"), "nancumsum", 2));
end
if ~or(orient == ["r", "*", "c"] | orient == [1, 2]) then
error(msprintf(gettext("%s: Wrong value for input argument #%d: Must be in the set {%s}.\n"), "nancumsum", 2, """r"", ""c"", ""*"", 1, 2"));
end
end
isn=isnan(x)
x(isn)=0
s=cumsum(x,orient)
endfunction
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