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annotate scripts/sparse/private/__sprand_impl__.m @ 17338:1c89599167a6

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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 abf384f5d243
children e3ac73be7894
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
14138
72c96de7a403 maint: update copyright notices for 2012
John W. Eaton <jwe@octave.org>
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1 ## Copyright (C) 2004-2012 Paul Kienzle
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2 ## Copyright (C) 2012 Jordi Gutiérrez Hermoso
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3 ##
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4 ## This file is part of Octave.
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5 ##
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6 ## Octave is free software; you can redistribute it and/or modify it
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7 ## under the terms of the GNU General Public License as published by
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8 ## the Free Software Foundation; either version 3 of the License, or (at
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9 ## your option) any later version.
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10 ##
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11 ## Octave is distributed in the hope that it will be useful, but
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12 ## WITHOUT ANY WARRANTY; without even the implied warranty of
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13 ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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14 ## General Public License for more details.
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15 ##
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16 ## You should have received a copy of the GNU General Public License
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17 ## along with Octave; see the file COPYING. If not, see
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18 ## <http://www.gnu.org/licenses/>.
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19 ##
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20 ## Original version by Paul Kienzle distributed as free software in the
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21 ## public domain.
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22
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23 ## -*- texinfo -*-
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24 ## @deftypefn {Function File} {} __sprand_impl__ (@var{s}, @var{randfun})
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92095e0ba372 Fix the copyright and docstring of __sprand_impl__
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25 ## @deftypefnx {Function File} {} __sprand_impl__ (@var{m}, @var{n}, @var{d}, @var{funname}, @var{randfun})
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26 ## Undocumented internal function.
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27 ## @end deftypefn
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28
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29 ## Actual implementation of sprand and sprandn happens here.
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30
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31 function S = __sprand_impl__ (varargin)
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32
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33 if (nargin == 2)
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34 m = varargin{1};
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35 randfun = varargin{2};
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36 [i, j] = find (m);
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37 [nr, nc] = size (m);
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38 S = sparse (i, j, randfun (size (i)), nr, nc);
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39 return;
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40 endif
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41
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5d3a684236b0 maint: Use Octave coding conventions for cuddling parentheses in scripts directory
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42 [m, n, d, funname, randfun] = deal (varargin{:});
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43
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44 if (!(isscalar (m) && m == fix (m) && m > 0))
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45 error ("%s: M must be an integer greater than 0", funname);
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46 endif
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47
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48 if (!(isscalar (n) && n == fix (n) && n > 0))
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49 error ("%s: N must be an integer greater than 0", funname);
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50 endif
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51
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52 if (d < 0 || d > 1)
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53 error ("%s: density D must be between 0 and 1", funname);
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54 endif
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55
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56 mn = m*n;
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57 k = round (d*mn);
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58 if (mn > sizemax ())
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59 ## randperm will overflow, so use alternative methods
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60
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61 idx = unique (fix (rand (min (k*1.01, k+10), 1) * mn)) + 1;
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62
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63 ## idx contains random numbers in [1,mn]
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64 ## generate 1% or 10 more random values than necessary in order to
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65 ## reduce the probability that there are less than k distinct
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66 ## values; maybe a better strategy could be used but I don't think
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67 ## it's worth the price
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68
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69 ## actual number of entries in S
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70 k = min (length (idx), k);
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71 j = floor ((idx(1:k) - 1) / m);
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David Bateman <dbateman@free.fr>
parents: 14868
diff changeset
72 i = idx(1:k) - j * m;
8fce0ed4894a Specialize is_empty and numel methods for sparse matrices (debian bug #706376)
David Bateman <dbateman@free.fr>
parents: 14868
diff changeset
73 else
8fce0ed4894a Specialize is_empty and numel methods for sparse matrices (debian bug #706376)
David Bateman <dbateman@free.fr>
parents: 14868
diff changeset
74 idx = randperm (mn, k);
8fce0ed4894a Specialize is_empty and numel methods for sparse matrices (debian bug #706376)
David Bateman <dbateman@free.fr>
parents: 14868
diff changeset
75 [i, j] = ind2sub ([m, n], idx);
8fce0ed4894a Specialize is_empty and numel methods for sparse matrices (debian bug #706376)
David Bateman <dbateman@free.fr>
parents: 14868
diff changeset
76 endif
8fce0ed4894a Specialize is_empty and numel methods for sparse matrices (debian bug #706376)
David Bateman <dbateman@free.fr>
parents: 14868
diff changeset
77
13197
6db186dfdeaa Refactor sprandn/sprand code, move common code to common function (bug #34352)
Jordi Gutiérrez Hermoso <jordigh@octave.org>
parents:
diff changeset
78 S = sparse (i, j, randfun (k, 1), m, n);
6db186dfdeaa Refactor sprandn/sprand code, move common code to common function (bug #34352)
Jordi Gutiérrez Hermoso <jordigh@octave.org>
parents:
diff changeset
79
14868
5d3a684236b0 maint: Use Octave coding conventions for cuddling parentheses in scripts directory
Rik <octave@nomad.inbox5.com>
parents: 14138
diff changeset
80 endfunction
17338
1c89599167a6 maint: End m-files with 1 blank line.
Rik <rik@octave.org>
parents: 17176
diff changeset
81