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codesprint: demos for semilogx, semilogy, and loglog * semilogx.m, semilogy.m, loglog.m: New demos.
author John W. Eaton <jwe@octave.org>
date Sat, 03 Sep 2011 18:46:09 -0400
parents c792872f8942
children 2e2738837a24
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1 ## Copyright (C) 1993-2011 John W. Eaton
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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} {} semilogy (@var{y})
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21 ## @deftypefnx {Function File} {} semilogy (@var{x}, @var{y})
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22 ## @deftypefnx {Function File} {} semilogy (@var{x}, @var{y}, @var{property}, @var{value}, @dots{})
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23 ## @deftypefnx {Function File} {} semilogy (@var{x}, @var{y}, @var{fmt})
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24 ## @deftypefnx {Function File} {} semilogy (@var{h}, @dots{})
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25 ## @deftypefnx {Function File} {@var{h} =} semilogy (@dots{})
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26 ## Produce a two-dimensional plot using a logarithmic scale for the @var{y}
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27 ## axis. See the documentation of @code{plot} for a description of the
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28 ## arguments that @code{semilogy} will accept.
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29 ## @seealso{plot, semilogx, loglog}
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30 ## @end deftypefn
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32 ## Author: jwe
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33
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34 function retval = semilogy (varargin)
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36 [h, varargin, nargs] = __plt_get_axis_arg__ ("semilogy", varargin{:});
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37
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38 if (nargs < 1)
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39 print_usage();
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40 endif
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41
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42 oldh = gca ();
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43 unwind_protect
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44 axes (h);
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45 newplot ();
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47 set (h, "yscale", "log");
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48 if (any( strcmp (get (gca, "nextplot"), {"new", "replace"})))
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49 set (h, "yminortick", "on");
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50 endif
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51
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52 tmp = __plt__ ("semilogy", h, varargin{:});
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53
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54 if (nargout > 0)
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55 retval = tmp;
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56 endif
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58 unwind_protect_cleanup
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59 axes (oldh);
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60 end_unwind_protect
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62 endfunction
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7f127e079a7c codesprint: demos for semilogx, semilogy, and loglog
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64 %!demo
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65 %! x = 1:0.01:10;
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66 %! y = (x .* (1 + rand (size (x)))) .^ 2;
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67 %! semilogy (x, y);
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69 ## Remove from test statistics. No real tests possible.
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70 %!assert (1)