Mercurial > hg > octave-lyh
annotate scripts/plot/ezplot.m @ 14493:351ca094580b
Add terminating semicolon.
* __go_draw_axes__.m (no_super_sub_scripts): Add terminating semicolon
missing since changeset 0b94080d2b0f.
| author | Ben Abbott <bpabbott@mac.com> |
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| date | Sat, 24 Mar 2012 20:32:24 -0400 |
| parents | ce2b59a6d0e5 |
| children | 78f57b14535c |
| rev | line source |
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maint: update copyright notices for 2012
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1 ## Copyright (C) 2008-2012 David Bateman |
| 8046 | 2 ## |
| 3 ## This file is part of Octave. | |
| 4 ## | |
| 5 ## Octave is free software; you can redistribute it and/or modify it | |
| 6 ## under the terms of the GNU General Public License as published by | |
| 7 ## the Free Software Foundation; either version 3 of the License, or (at | |
| 8 ## your option) any later version. | |
| 9 ## | |
| 10 ## Octave is distributed in the hope that it will be useful, but | |
| 11 ## WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 12 ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 13 ## General Public License for more details. | |
| 14 ## | |
| 15 ## You should have received a copy of the GNU General Public License | |
| 16 ## along with Octave; see the file COPYING. If not, see | |
| 17 ## <http://www.gnu.org/licenses/>. | |
| 18 | |
| 19 ## -*- texinfo -*- | |
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20 ## @deftypefn {Function File} {} ezplot (@var{f}) |
| 8046 | 21 ## @deftypefnx {Function File} {} ezplot (@var{fx}, @var{fy}) |
| 22 ## @deftypefnx {Function File} {} ezplot (@dots{}, @var{dom}) | |
| 23 ## @deftypefnx {Function File} {} ezplot (@dots{}, @var{n}) | |
| 24 ## @deftypefnx {Function File} {} ezplot (@var{h}, @dots{}) | |
| 25 ## @deftypefnx {Function File} {@var{h} =} ezplot (@dots{}) | |
| 26 ## | |
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27 ## Plot the curve defined by @var{f} in two dimensions. The function |
| 8046 | 28 ## @var{f} may be a string, inline function or function handle and can |
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29 ## have either one or two variables. If @var{f} has one variable, then |
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30 ## the function is plotted over the domain @code{-2*pi < @var{x} < 2*pi} |
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31 ## with 500 points. |
| 8046 | 32 ## |
| 33 ## If @var{f} has two variables then @code{@var{f}(@var{x},@var{y}) = 0} | |
| 34 ## is calculated over the meshed domain @code{-2*pi < @var{x} | @var{y} | |
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35 ## < 2*pi} with 60 by 60 in the mesh. For example: |
| 8046 | 36 ## |
| 37 ## @example | |
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38 ## ezplot (@@(@var{x}, @var{y}) @var{x}.^2 - @var{y}.^2 - 1) |
| 8046 | 39 ## @end example |
| 40 ## | |
| 41 ## If two functions are passed as strings, inline functions or function | |
| 42 ## handles, then the parametric function | |
| 43 ## | |
| 44 ## @example | |
| 45 ## @group | |
| 46 ## @var{x} = @var{fx} (@var{t}) | |
| 47 ## @var{y} = @var{fy} (@var{t}) | |
| 48 ## @end group | |
| 49 ## @end example | |
| 50 ## | |
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51 ## @noindent |
| 8046 | 52 ## is plotted over the domain @code{-2*pi < @var{t} < 2*pi} with 500 |
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53 ## points. |
| 8046 | 54 ## |
| 55 ## If @var{dom} is a two element vector, it represents the minimum and maximum | |
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56 ## value of @var{x}, @var{y} and @var{t}. If it is a four element |
| 8046 | 57 ## vector, then the minimum and maximum values of @var{x} and @var{t} |
| 58 ## are determined by the first two elements and the minimum and maximum | |
| 59 ## of @var{y} by the second pair of elements. | |
| 60 ## | |
| 61 ## @var{n} is a scalar defining the number of points to use in plotting | |
| 62 ## the function. | |
| 63 ## | |
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64 ## The optional return value @var{h} is a graphics handle to the created plot. |
| 8046 | 65 ## |
| 66 ## @seealso{plot, ezplot3} | |
| 67 ## @end deftypefn | |
| 68 | |
| 69 function retval = ezplot (varargin) | |
| 70 | |
| 71 [h, needusage] = __ezplot__ ("plot", varargin{:}); | |
| 72 | |
| 73 if (needusage) | |
| 74 print_usage (); | |
| 75 endif | |
| 76 | |
| 77 if (nargout > 0) | |
| 78 retval = h; | |
| 79 endif | |
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80 |
| 8046 | 81 endfunction |
| 82 | |
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83 |
| 8046 | 84 %!demo |
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85 %! clf; |
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86 %! ezplot (@cos, @sin); |
| 8046 | 87 |
| 88 %!demo | |
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89 %! clf; |
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90 %! ezplot ('1/x'); |
| 8046 | 91 |
| 92 %!demo | |
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93 %! clf; |
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94 %! ezplot (inline ('x^2 - y^2 = 1')); |
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95 |