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annotate scripts/plot/draw/ezpolar.m @ 19840:c5270263d466 gui-release

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close gui-release branch
author John W. Eaton <jwe@octave.org>
date Fri, 30 Jan 2015 17:41:50 -0500
parents 446c46af4b42
children 4197fc428c7d
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d63878346099 maint: Update copyright notices for release.
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1 ## Copyright (C) 2007-2013 David Bateman
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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} {} ezpolar (@var{f})
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21 ## @deftypefnx {Function File} {} ezpolar (@dots{}, @var{dom})
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22 ## @deftypefnx {Function File} {} ezpolar (@dots{}, @var{n})
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23 ## @deftypefnx {Function File} {} ezpolar (@var{hax}, @dots{})
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24 ## @deftypefnx {Function File} {@var{h} =} ezpolar (@dots{})
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25 ##
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26 ## Plot a 2-D function in polar coordinates.
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27 ##
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28 ## The function @var{f} is a string, inline function, or function handle with
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29 ## a single argument. The expected form of the function is
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30 ## @code{@var{rho} = @var{f}(@var{theta})}.
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31 ## By default the plot is over the domain @code{0 <= @var{theta} <= 2*pi}
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32 ## with 500 points.
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33 ##
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34 ## If @var{dom} is a two element vector, it represents the minimum and maximum
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35 ## values of @var{theta}.
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36 ##
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37 ## @var{n} is a scalar defining the number of points to use in plotting
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38 ## the function.
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39 ##
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40 ## If the first argument @var{hax} is an axes handle, then plot into this axis,
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41 ## rather than the current axes returned by @code{gca}.
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42 ##
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43 ## The optional return value @var{h} is a graphics handle to the created plot.
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44 ##
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45 ## Example:
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46 ##
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47 ## @example
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48 ## ezpolar (@@(t) sin (5/4 * t), [0, 8*pi]);
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49 ## @end example
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50 ##
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51 ## @seealso{polar, ezplot}
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52 ## @end deftypefn
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53
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54 function h = ezpolar (varargin)
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55
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56 [htmp, needusage] = __ezplot__ ("polar", varargin{:});
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57
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58 if (needusage)
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59 print_usage ();
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60 endif
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61
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62 if (nargout > 0)
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63 h = htmp;
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64 endif
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65
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66 endfunction
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67
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68
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69 %!demo
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70 %! clf;
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71 %! ezpolar (@(t) sin (5/4 * t), [0, 8*pi]);
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