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ldivide.m    61 lines (54 with data), 1.9 kB

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function resu = ldivide(A, B);
%# function resu = ldivide(A, B)
%# Implements the dotted '\' operator when at least one argument is a dataframe.
%% Copyright (C) 2009-2010 Pascal Dupuis <Pascal.Dupuis@uclouvain.be>
%%
%% This file is part of Octave.
%%
%% Octave 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 2, or (at your option) any later version.
%%
%% Octave 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 Octave; see the file COPYING. If not,
%% write to the Free Software Foundation, 59 Temple Place -
%% Suite 330, Boston, MA 02111-1307, USA.
%#
%# $Id$
%#
[A, B] = df_basecomp(A, B);
if isa(B, 'dataframe')
if !isa(A, 'dataframe'),
resu = B;
if isscalar(A)
resu._data = cellfun(@(x) A.\x, B._data, "UniformOutput", false);
elseif ismatrix(A),
resu._data = cellfun(@(x, y) x.\y, num2cell(A, 1), B._data,\
"UniformOutput", false);
else
error("Operator .\ not implemented");
endif
else
resu = A;
resu._data = cellfun(@(x, y) x.\y, A._data, B._data,\
"UniformOutput", false);
endif
else
resu = A;
if isscalar(B),
resu._data = cellfun(@(x) x.\B, A._data, "UniformOutput", false);
elseif ismatrix(B),
resu._data = cellfun(@(x, y) x.\y, A._data, num2cell(B, 1),\
"UniformOutput", false);
else
error("Operator .\ not implemented");
endif
endif
endfunction