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annotate scripts/plot/semilogxerr.m @ 17530:0f45d9dd8107

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test: Fix 4 failing plot demos. * scripts/plot/legend.m: Demo #11, use 'h' for returned handle. * scripts/plot/plot.m: Fix typo "lenths" -> "lengths". * scripts/plot/ribbon.m: Remove unnecessary call to meshgrid now that sombrero returns meshgridded data. * scripts/plot/trimesh.m: Set colormap so plot is always reproducible.
author Rik <rik@octave.org>
date Tue, 01 Oct 2013 15:39:20 -0700
parents 68bcac3c043a
children
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72c96de7a403 maint: update copyright notices for 2012
John W. Eaton <jwe@octave.org>
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1 ## Copyright (C) 2000-2012 Teemu Ikonen
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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} {} semilogxerr (@var{args})
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21 ## @deftypefnx {Function File} {} semilogxerr (@var{hax}, @var{args})
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22 ## @deftypefnx {Function File} {@var{h} =} semilogxerr (@var{args})
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23 ## Produce 2-D plots using a logarithmic scale for the x-axis and
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24 ## errorbars at each data point.
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25 ##
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26 ## Many different combinations of arguments are possible. The most common
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27 ## form is
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28 ##
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29 ## @example
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30 ## semilogxerr (@var{x}, @var{y}, @var{ey}, @var{fmt})
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31 ## @end example
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32 ##
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33 ## @noindent
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34 ## which produces a semi-logarithmic plot of @var{y} versus @var{x}
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35 ## with errors in the @var{y}-scale defined by @var{ey} and the plot
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36 ## format defined by @var{fmt}. @xref{XREFerrorbar,,errorbar}, for available
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37 ## formats and additional information.
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38 ##
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39 ## If the first argument @var{hax} is an axes handle, then plot into this axis,
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40 ## rather than the current axes returned by @code{gca}.
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41 ##
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42 ## @seealso{errorbar, semilogyerr, loglogerr}
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43 ## @end deftypefn
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44
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45 ## Created: 20.2.2001
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46 ## Author: Teemu Ikonen <tpikonen@pcu.helsinki.fi>
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47 ## Keywords: errorbar, plotting
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48
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49 function h = semilogxerr (varargin)
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50
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51 [hax, varargin] = __plt_get_axis_arg__ ("semilogxerr", varargin{:});
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52
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53 oldfig = [];
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54 if (! isempty (hax))
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55 oldfig = get (0, "currentfigure");
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56 endif
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57 unwind_protect
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58 hax = newplot (hax);
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59
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60 set (hax, "xscale", "log");
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61 if (! ishold (hax))
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62 set (hax, "xminortick", "on");
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63 endif
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64
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65 htmp = __errcomm__ ("semilogxerr", hax, varargin{:});
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67 unwind_protect_cleanup
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68 if (! isempty (oldfig))
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69 set (0, "currentfigure", oldfig);
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70 endif
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71 end_unwind_protect
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73 if (nargout > 0)
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74 h = htmp;
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75 endif
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77 endfunction
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80 %!demo
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81 %! clf;
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82 %! x = exp (log (0.01):0.2:log (10));
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83 %! y = wblpdf (x, 2, 2);
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84 %! ey = 0.5*rand (size (y)) .* y;
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85 %! semilogxerr (x, y, ey, '#~x-');
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86 %! xlim (x([1, end]));
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87 %! title ({'semilogxerr(): semilogx() plot with errorbars', ...
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88 %! 'X-axis is logarithmic'});
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89