--- /dev/null
+function resu = fold(df, dim, indr, indc)
+
+ %# function resu = subasgn(df, S, RHS)
+ %# The purpose is to fold a dataframe. Part from (1:indr-1) doesn't
+ %# move, then content starting at indr is moved into the second,
+ %# third, ... sheet. To be moved, there must be equality of rownames,
+ %# if any, and of fields contained in indc.
+
+
+ %% 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: fold.m 9585 2012-02-05 15:32:46Z cdemills $
+ %#
+switch dim
+ case 1
+ [indr, nrow] = df_name2idx(df._name{1}, indr, df._cnt(1), 'row');
+ [indc, ncol] = df_name2idx(df._name{2}, indc, df._cnt(2), 'column');
+
+ if (indr(1) > 1),
+ slice_size = indr(1) - 1;
+ %# we can't use directly resu = df(1:slice_size, :, :)
+ S.type = '()';
+ S.subs = { 1:slice_size, ':', ':', 'dataframe'};
+ resu = subsref(df, S);
+
+ %# how many columns for each slice
+ targets = cellfun(@length, df._rep);
+ %# a test function to determine if the location is free
+ for indj = 1:df._cnt(2),
+ if (any(indj == indc)),
+ continue;
+ endif
+ switch df._type{indj}
+ case { 'char' }
+ testfunc{indj} = @(x, indr, indc) ...
+ !isna(x{indr, indc});
+ otherwise
+ testfunc{indj} = @(x, indr, indc) ...
+ !isna(x(indr, indc));
+ endswitch
+ endfor
+
+ for indi = indr,
+ %# where does this line go ?
+ where = find(df._data{indc}(1:slice_size, 1) ...
+ == df._data{indc}(indi, 1));
+ if (!isempty(where)),
+ %# transfering one line -- loop over columns
+ for indj = 1:df._cnt(2),
+ if any(indj == indc),
+ continue;
+ endif
+
+ if (testfunc{indj}(resu._data{indj}, where, targets(indj))),
+ %# add one more sheet
+ resu = df_pad(resu, 3, 1, indj);
+ targets(indj) = targets(indj) + 1;
+ endif
+ %# transfer field
+ stop
+ resu._data{indj}(where, targets(indj)) = ...
+ df._data{indj}(indi, 1);
+ endfor
+ %# update row index
+ resu._ridx(where, max(targets)) = df._ridx(indi);
+ else
+ disp('line 65: FIXME'); keyboard;
+ endif
+ endfor
+
+ else
+
+ disp('line 70: FIXME '); keyboard
+ endif
+
+
+endswitch