Mercurial > hg > octave-lyh
annotate scripts/statistics/distributions/kolmogorov_smirnov_cdf.m @ 16447:e3b33a7530bc
improve encapsulation of history window object
* history-dockwidget.h, history-dockwidget.cc
(history_dock_widget::history_dock_widget): Set status tip here.
Connect history_dock_widget::information signal to
main_window::report_status_message.
Connect history_dock_widget::command_double_clicked signal to
main_window::handle_command_double_clicked.
(history_dock_widget::connect_visibility_changed,
history_dock_widget::focus, history_dock_widget::handle_visibility):
New functions.
* main-window.h, main-window.cc (main_window::history_window): Rename
from _history_dock_widget. Don't use a pointer. Change all uses.
(main_window::main_window): Initialize it here.
(main_window::~main_window): Don't delete _history_dock_widget.
(main_window::focus_history_window_signal): New signal.
(main_window::focus_history_window): Rename from
main_window::focus_command_history. Emit focus_history_window_signal
instead of performing actions here.
(main_window::handle_command_history_visible): Delete.
(main_window::connect_visibility_changed): Call
history_window.connect_visibility_changed instead of performing
actions here.
(main_window::construct): Don't create _history_dock_widget. Adapt
signal/slot connections for new history_window object.
| author | John W. Eaton <jwe@octave.org> |
|---|---|
| date | Sat, 06 Apr 2013 16:46:14 -0400 |
| parents | f3d52523cde1 |
| children |
| rev | line source |
|---|---|
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1 ## Copyright (C) 2012 Rik Wehbring |
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2 ## Copyright (C) 1995-2012 Kurt Hornik |
| 3426 | 3 ## |
| 3922 | 4 ## This file is part of Octave. |
| 5 ## | |
| 6 ## Octave is free software; you can redistribute it and/or modify it | |
| 7 ## under the terms of the GNU General Public License as published by | |
| 7016 | 8 ## the Free Software Foundation; either version 3 of the License, or (at |
| 9 ## your option) any later version. | |
| 3426 | 10 ## |
| 3922 | 11 ## Octave is distributed in the hope that it will be useful, but |
| 3191 | 12 ## WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 3426 | 14 ## General Public License for more details. |
| 15 ## | |
| 3191 | 16 ## You should have received a copy of the GNU General Public License |
| 7016 | 17 ## along with Octave; see the file COPYING. If not, see |
| 18 ## <http://www.gnu.org/licenses/>. | |
| 3191 | 19 |
| 3456 | 20 ## -*- texinfo -*- |
| 21 ## @deftypefn {Function File} {} kolmogorov_smirnov_cdf (@var{x}, @var{tol}) | |
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22 ## Return the cumulative distribution function (CDF) at @var{x} of the |
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23 ## Kolmogorov-Smirnov distribution, |
| 3456 | 24 ## @tex |
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25 ## $$ Q(x) = \sum_{k=-\infty}^\infty (-1)^k \exp (-2 k^2 x^2) $$ |
| 3456 | 26 ## @end tex |
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27 ## @ifnottex |
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28 ## |
| 3456 | 29 ## @example |
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30 ## @group |
| 3456 | 31 ## Inf |
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32 ## Q(x) = SUM (-1)^k exp (-2 k^2 x^2) |
| 3456 | 33 ## k = -Inf |
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34 ## @end group |
| 3456 | 35 ## @end example |
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36 ## |
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37 ## @end ifnottex |
| 3456 | 38 ## @noindent |
| 39 ## for @var{x} > 0. | |
| 40 ## | |
| 41 ## The optional parameter @var{tol} specifies the precision up to which | |
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42 ## the series should be evaluated; the default is @var{tol} = @code{eps}. |
| 3456 | 43 ## @end deftypefn |
| 3426 | 44 |
| 5428 | 45 ## Author: KH <Kurt.Hornik@wu-wien.ac.at> |
| 3456 | 46 ## Description: CDF of the Kolmogorov-Smirnov distribution |
| 3191 | 47 |
| 48 function cdf = kolmogorov_smirnov_cdf (x, tol) | |
| 3426 | 49 |
| 3191 | 50 if (nargin < 1 || nargin > 2) |
| 6046 | 51 print_usage (); |
| 3191 | 52 endif |
| 53 | |
| 54 if (nargin == 1) | |
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55 if (isa (x, "single")) |
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56 tol = eps ("single"); |
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57 else |
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58 tol = eps; |
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59 endif |
| 3426 | 60 else |
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61 if (! (isscalar (tol) && (tol > 0))) |
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62 error ("kolmogorov_smirnov_cdf: TOL must be a positive scalar"); |
| 3191 | 63 endif |
| 64 endif | |
| 65 | |
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66 if (numel (x) == 0) |
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67 error ("kolmogorov_smirnov_cdf: X must not be empty"); |
| 3191 | 68 endif |
| 69 | |
| 4859 | 70 cdf = zeros (size (x)); |
| 71 | |
| 3191 | 72 ind = find (x > 0); |
| 73 if (length (ind) > 0) | |
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74 if (columns (ind) < rows (ind)) |
| 4859 | 75 y = x(ind.'); |
| 76 else | |
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77 y = x(ind); |
| 4859 | 78 endif |
| 3457 | 79 K = ceil (sqrt (- log (tol) / 2) / min (y)); |
| 3191 | 80 k = (1:K)'; |
| 3457 | 81 A = exp (- 2 * k.^2 * y.^2); |
| 3191 | 82 odd = find (rem (k, 2) == 1); |
| 3457 | 83 A(odd,:) = -A(odd,:); |
| 3191 | 84 cdf(ind) = 1 + 2 * sum (A); |
| 85 endif | |
| 86 | |
| 87 endfunction | |
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88 |
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89 |
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90 %% Test input validation |
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91 %!error kolmogorov_smirnov_cdf () |
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92 %!error kolmogorov_smirnov_cdf (1,2,3) |
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93 %!error kolmogorov_smirnov_cdf (1, ones (2)) |
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94 %!error kolmogorov_smirnov_cdf ([], 1) |
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95 |