/usr/share/octave/packages/dataframe-1.0.1/@dataframe/find.m is in octave-dataframe 1.0.1-1.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 | function varargout = find(df, varargin)
%% Copyright (C) 2009-2012 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, 51 Franklin Street -
%% Fifth Floor, Boston, MA 02110-1301, USA.
%#
%# $Id$
%#
switch nargout
case {0, 1}
resu = []; mz = max (cellfun (@length, df._rep));
for indc = (1:df._cnt(2))
[indr, inds] = feval (@find, df._data{indc}(:, df._rep{indc}));
%# create a vector the same size as indr
dummy = indr; dummy(:) = indc;
resu = [resu; sub2ind([df._cnt(1:2) mz], indr, dummy, inds)];
endfor
varargout{1} = sort (resu);
case 2
nz = 0; idx_i = []; idx_j = [];
for indc = (1:df._cnt(2))
[dum1, dum2] = feval (@find, df._data{indc}(:, df._rep{indc}));
idx_i = [idx_i; dum1];
idx_j = [idx_j; nz + dum2];
nz = nz + df._cnt(1)*length (df._rep{indc});
endfor
varargout{1} = idx_i; varargout{2} = idx_j;
case 3
nz = 0; idx_i = []; idx_j = []; val = [];
for indc = (1:df._cnt(2))
[dum1, dum2, dum3] = feval (@find, df._data{indc}(:, df._rep{indc}));
idx_i = [idx_i; dum1];
idx_j = [idx_j; nz + dum2];
val = [val; dum3];
nz = nz + df._cnt(1)*length (df._rep{indc});
endfor
varargout{1} = idx_i; varargout{2} = idx_j; varargout{3} = val;
otherwise
print_usage ('find');
endswitch
endfunction
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