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annotate scripts/deprecated/studentize.m @ 17346:1c89599167a6

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maint: End m-files with 1 blank line. Simplifies automated grammarchecking script. * scripts/@ftp/ascii.m, scripts/@ftp/binary.m, scripts/@ftp/cd.m, scripts/@ftp/close.m, scripts/@ftp/delete.m, scripts/@ftp/dir.m, scripts/@ftp/display.m, scripts/@ftp/ftp.m, scripts/@ftp/loadobj.m, scripts/@ftp/mget.m, scripts/@ftp/mkdir.m, scripts/@ftp/mput.m, scripts/@ftp/rename.m, scripts/@ftp/rmdir.m, scripts/@ftp/saveobj.m, scripts/audio/lin2mu.m, scripts/audio/loadaudio.m, scripts/audio/mu2lin.m, scripts/audio/record.m, scripts/audio/saveaudio.m, scripts/audio/setaudio.m, scripts/deprecated/__error_text__.m, scripts/deprecated/cut.m, scripts/deprecated/error_text.m, scripts/deprecated/isstr.m, scripts/deprecated/polyderiv.m, scripts/deprecated/studentize.m, scripts/deprecated/sylvester_matrix.m, scripts/general/bicubic.m, scripts/general/celldisp.m, scripts/general/colon.m, scripts/general/cplxpair.m, scripts/general/del2.m, scripts/general/display.m, scripts/general/isdir.m, scripts/general/isequaln.m, scripts/general/loadobj.m, scripts/general/private/__isequal__.m, scripts/general/private/__splinen__.m, scripts/general/profexplore.m, scripts/general/quadgk.m, scripts/general/randi.m, scripts/general/repmat.m, scripts/general/saveobj.m, scripts/geometry/delaunay.m, scripts/help/__unimplemented__.m, scripts/help/doc_cache_create.m, scripts/help/get_first_help_sentence.m, scripts/help/help.m, scripts/help/print_usage.m, scripts/help/private/__additional_help_message__.m, scripts/help/private/__strip_html_tags__.m, scripts/help/type.m, scripts/image/imfinfo.m, scripts/image/imformats.m, scripts/image/imread.m, scripts/image/imwrite.m, scripts/image/private/__imfinfo__.m, scripts/image/private/__imread__.m, scripts/image/private/__imwrite__.m, scripts/image/private/imageIO.m, scripts/image/private/imwrite_filename.m, scripts/image/private/ind2x.m, scripts/io/beep.m, scripts/io/strread.m, scripts/io/textread.m, scripts/io/textscan.m, scripts/linear-algebra/krylov.m, scripts/linear-algebra/subspace.m, scripts/miscellaneous/bug_report.m, scripts/miscellaneous/bunzip2.m, scripts/miscellaneous/cast.m, scripts/miscellaneous/copyfile.m, scripts/miscellaneous/debug.m, scripts/miscellaneous/dir.m, scripts/miscellaneous/dump_prefs.m, scripts/miscellaneous/error_ids.m, scripts/miscellaneous/fileattrib.m, scripts/miscellaneous/gunzip.m, scripts/miscellaneous/isdeployed.m, scripts/miscellaneous/ismac.m, scripts/miscellaneous/mex.m, scripts/miscellaneous/mexext.m, scripts/miscellaneous/mkoctfile.m, scripts/miscellaneous/movefile.m, scripts/miscellaneous/namelengthmax.m, scripts/miscellaneous/news.m, scripts/miscellaneous/pack.m, scripts/miscellaneous/perl.m, scripts/miscellaneous/private/display_info_file.m, scripts/miscellaneous/python.m, scripts/miscellaneous/rmappdata.m, scripts/miscellaneous/run.m, scripts/miscellaneous/tar.m, scripts/miscellaneous/tempname.m, scripts/miscellaneous/untar.m, scripts/miscellaneous/unzip.m, scripts/miscellaneous/what.m, scripts/miscellaneous/zip.m, scripts/optimization/fminunc.m, scripts/optimization/fsolve.m, scripts/optimization/fzero.m, scripts/optimization/glpk.m, scripts/optimization/optimget.m, scripts/optimization/optimset.m, scripts/optimization/qp.m, scripts/optimization/sqp.m, scripts/path/pathdef.m, scripts/pkg/pkg.m, scripts/pkg/private/build.m, scripts/pkg/private/describe.m, scripts/pkg/private/dirempty.m, scripts/pkg/private/get_forge_download.m, scripts/pkg/private/get_forge_pkg.m, scripts/pkg/private/get_unsatisfied_deps.m, scripts/pkg/private/install.m, scripts/pkg/private/is_architecture_dependent.m, scripts/pkg/private/list_forge_packages.m, scripts/pkg/private/rebuild.m, scripts/pkg/private/shell.m, scripts/pkg/private/uninstall.m, scripts/plot/axes.m, scripts/plot/box.m, scripts/plot/closereq.m, scripts/plot/diffuse.m, scripts/plot/ezpolar.m, scripts/plot/findfigs.m, scripts/plot/gco.m, scripts/plot/guidata.m, scripts/plot/guihandles.m, scripts/plot/hdl2struct.m, scripts/plot/linkprop.m, scripts/plot/peaks.m, scripts/plot/print.m, scripts/plot/private/__add_datasource__.m, scripts/plot/private/__axis_label__.m, scripts/plot/private/__clabel__.m, scripts/plot/private/__color_str_rgb__.m, scripts/plot/private/__contour__.m, scripts/plot/private/__default_plot_options__.m, scripts/plot/private/__errcomm__.m, scripts/plot/private/__file_filter__.m, scripts/plot/private/__fltk_file_filter__.m, scripts/plot/private/__getlegenddata__.m, scripts/plot/private/__gnuplot_open_stream__.m, scripts/plot/private/__gnuplot_print__.m, scripts/plot/private/__go_draw_axes__.m, scripts/plot/private/__interp_cube__.m, scripts/plot/private/__is_function__.m, scripts/plot/private/__line__.m, scripts/plot/private/__marching_cube__.m, scripts/plot/private/__next_line_style__.m, scripts/plot/private/__patch__.m, scripts/plot/private/__pie__.m, scripts/plot/private/__pltopt__.m, scripts/plot/private/__quiver__.m, scripts/plot/private/__scatter__.m, scripts/plot/private/__stem__.m, scripts/plot/private/__uigetdir_fltk__.m, scripts/plot/private/__uigetfile_fltk__.m, scripts/plot/private/__uiobject_split_args__.m, scripts/plot/private/__uiputfile_fltk__.m, scripts/plot/refresh.m, scripts/plot/saveas.m, scripts/plot/shg.m, scripts/plot/specular.m, scripts/plot/sphere.m, scripts/plot/struct2hdl.m, scripts/plot/subplot.m, scripts/plot/uicontextmenu.m, scripts/plot/uicontrol.m, scripts/plot/uipanel.m, scripts/plot/uipushtool.m, scripts/plot/uiresume.m, scripts/plot/uitoggletool.m, scripts/plot/uitoolbar.m, scripts/plot/uiwait.m, scripts/plot/waitforbuttonpress.m, scripts/polynomial/pchip.m, scripts/polynomial/polyeig.m, scripts/polynomial/ppval.m, scripts/prefs/addpref.m, scripts/prefs/getpref.m, scripts/prefs/ispref.m, scripts/prefs/private/loadprefs.m, scripts/prefs/private/prefsfile.m, scripts/prefs/private/saveprefs.m, scripts/prefs/setpref.m, scripts/set/private/validargs.m, scripts/set/unique.m, scripts/signal/arch_fit.m, scripts/signal/arch_rnd.m, scripts/signal/arch_test.m, scripts/signal/arma_rnd.m, scripts/signal/durbinlevinson.m, scripts/signal/fractdiff.m, scripts/signal/freqz.m, scripts/signal/freqz_plot.m, scripts/signal/hurst.m, scripts/signal/periodogram.m, scripts/signal/private/rectangle_lw.m, scripts/signal/private/rectangle_sw.m, scripts/signal/private/triangle_sw.m, scripts/signal/spectral_adf.m, scripts/signal/spectral_xdf.m, scripts/signal/stft.m, scripts/signal/synthesis.m, scripts/signal/yulewalker.m, scripts/sparse/colperm.m, scripts/sparse/eigs.m, scripts/sparse/etreeplot.m, scripts/sparse/gmres.m, scripts/sparse/private/__sprand_impl__.m, scripts/sparse/spdiags.m, scripts/sparse/sprandn.m, scripts/specfun/bessel.m, scripts/specfun/betaln.m, scripts/specfun/expint.m, scripts/special-matrix/gallery.m, scripts/startup/__finish__.m, scripts/statistics/base/qqplot.m, scripts/statistics/distributions/tcdf.m, scripts/statistics/distributions/wienrnd.m, scripts/statistics/models/logistic_regression.m, scripts/statistics/models/private/logistic_regression_derivatives.m, scripts/statistics/models/private/logistic_regression_likelihood.m, scripts/statistics/tests/anova.m, scripts/statistics/tests/bartlett_test.m, scripts/statistics/tests/chisquare_test_homogeneity.m, scripts/statistics/tests/chisquare_test_independence.m, scripts/statistics/tests/cor_test.m, scripts/statistics/tests/f_test_regression.m, scripts/statistics/tests/hotelling_test.m, scripts/statistics/tests/hotelling_test_2.m, scripts/statistics/tests/kolmogorov_smirnov_test_2.m, scripts/statistics/tests/kruskal_wallis_test.m, scripts/statistics/tests/manova.m, scripts/statistics/tests/mcnemar_test.m, scripts/statistics/tests/prop_test_2.m, scripts/statistics/tests/run_test.m, scripts/statistics/tests/sign_test.m, scripts/statistics/tests/t_test.m, scripts/statistics/tests/t_test_2.m, scripts/statistics/tests/t_test_regression.m, scripts/statistics/tests/u_test.m, scripts/statistics/tests/var_test.m, scripts/statistics/tests/welch_test.m, scripts/statistics/tests/wilcoxon_test.m, scripts/statistics/tests/z_test.m, scripts/statistics/tests/z_test_2.m, scripts/strings/strcat.m, scripts/strings/strjoin.m, scripts/strings/strsplit.m, scripts/testfun/__have_feature__.m, scripts/testfun/__printf_assert__.m, scripts/testfun/__prog_output_assert__.m, scripts/testfun/__run_test_suite__.m, scripts/time/clock.m, scripts/time/datenum.m, scripts/ui/errordlg.m, scripts/ui/private/message_dialog.m: End m-files with 1 blank line.
author Rik <rik@octave.org>
date Wed, 28 Aug 2013 08:33:02 -0700
parents 72c96de7a403
children
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rev   line source
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72c96de7a403 maint: update copyright notices for 2012
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1 ## Copyright (C) 1995-2012 Kurt Hornik
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2 ##
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3 ## This file is part of Octave.
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4 ##
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5 ## Octave is free software; you can redistribute it and/or modify it
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6 ## under the terms of the GNU General Public License as published by
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7 ## the Free Software Foundation; either version 3 of the License, or (at
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8 ## your option) any later version.
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9 ##
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10 ## Octave is distributed in the hope that it will be useful, but
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11 ## WITHOUT ANY WARRANTY; without even the implied warranty of
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12 ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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13 ## General Public License for more details.
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14 ##
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15 ## You should have received a copy of the GNU General Public License
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16 ## along with Octave; see the file COPYING. If not, see
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17 ## <http://www.gnu.org/licenses/>.
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18
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19 ## -*- texinfo -*-
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20 ## @deftypefn {Function File} {} studentize (@var{x})
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21 ## @deftypefnx {Function File} {} studentize (@var{x}, @var{dim})
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22 ## If @var{x} is a vector, subtract its mean and divide by its standard
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23 ## deviation.
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24 ##
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25 ## If @var{x} is a matrix, do the above along the first non-singleton
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26 ## dimension.
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27 ## If the optional argument @var{dim} is given, operate along this dimension.
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28 ## @seealso{center}
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29 ## @end deftypefn
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30
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31 ## Author: KH <Kurt.Hornik@wu-wien.ac.at>
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32 ## Description: Subtract mean and divide by standard deviation
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33
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34 function t = studentize (x, dim)
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35 persistent warned = false;
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36 if (! warned)
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37 warned = true;
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38 warning ("Octave:deprecated-function",
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39 "studentize is obsolete and will be removed from a future version of Octave; please use zscore instead");
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40 endif
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41
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42 if (nargin != 1 && nargin != 2)
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43 print_usage ();
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44 endif
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45
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46 if (! isnumeric(x))
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47 error ("studentize: X must be a numeric vector or matrix");
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48 endif
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49
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50 if (isinteger (x))
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51 x = double (x);
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52 endif
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53
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54 nd = ndims (x);
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55 sz = size (x);
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56 if (nargin != 2)
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57 ## Find the first non-singleton dimension.
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58 dim = find (sz > 1, 1);
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59 if (isempty (dim))
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60 dim = 1;
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61 endif
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62 else
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63 if (!(isscalar (dim) && dim == fix (dim))
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64 || !(1 <= dim && dim <= nd))
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65 error ("studentize: DIM must be an integer and a valid dimension");
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66 endif
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67 endif
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68
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69 c = sz(dim);
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70 if (c == 0)
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71 t = x;
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72 else
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73 idx = ones (1, nd);
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74 idx(dim) = c;
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75 t = x - repmat (mean (x, dim), idx);
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76 t = t ./ repmat (max (cat (dim, std(t, [], dim), ! any (t, dim)), [], dim), idx);
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77 endif
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78
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79 endfunction
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80
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81
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82 %!assert(studentize ([1,2,3]), [-1,0,1])
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83 %!assert(studentize (int8 ([1,2,3])), [-1,0,1])
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84 #%!assert(studentize (ones (3,2,0,2)), zeros (3,2,0,2))
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85 %!assert(studentize ([2,0,-2;0,2,0;-2,-2,2]), [1,0,-1;0,1,0;-1,-1,1])
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86
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87 %% Test input validation
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88 %!error studentize ()
e151e23f73bc Overhaul base statistics functions and documentation of same.
Rik <octave@nomad.inbox5.com>
parents: 11149
diff changeset
89 %!error studentize (1, 2, 3)
e151e23f73bc Overhaul base statistics functions and documentation of same.
Rik <octave@nomad.inbox5.com>
parents: 11149
diff changeset
90 %!error studentize ([true true])
e151e23f73bc Overhaul base statistics functions and documentation of same.
Rik <octave@nomad.inbox5.com>
parents: 11149
diff changeset
91 %!error studentize (1, ones(2,2))
e151e23f73bc Overhaul base statistics functions and documentation of same.
Rik <octave@nomad.inbox5.com>
parents: 11149
diff changeset
92 %!error studentize (1, 1.5)
e151e23f73bc Overhaul base statistics functions and documentation of same.
Rik <octave@nomad.inbox5.com>
parents: 11149
diff changeset
93 %!error studentize (1, 0)
e151e23f73bc Overhaul base statistics functions and documentation of same.
Rik <octave@nomad.inbox5.com>
parents: 11149
diff changeset
94 %!error studentize (1, 3)
e151e23f73bc Overhaul base statistics functions and documentation of same.
Rik <octave@nomad.inbox5.com>
parents: 11149
diff changeset
95