Mercurial > octave
annotate scripts/plot/draw/fplot.m @ 26376:00f796120a6d stable
maint: Update copyright dates in all source files.
author | John W. Eaton <jwe@octave.org> |
---|---|
date | Wed, 02 Jan 2019 16:32:43 -0500 |
parents | af655eb15cdc |
children | 98afb8bbd1f6 |
rev | line source |
---|---|
26376
00f796120a6d
maint: Update copyright dates in all source files.
John W. Eaton <jwe@octave.org>
parents:
26154
diff
changeset
|
1 ## Copyright (C) 2005-2019 Paul Kienzle |
5820 | 2 ## |
3 ## This file is part of Octave. | |
4 ## | |
24534
194eb4bd202b
maint: Update punctuation for GPL v3 license text.
Rik <rik@octave.org>
parents:
24494
diff
changeset
|
5 ## Octave is free software: you can redistribute it and/or modify it |
5820 | 6 ## under the terms of the GNU General Public License as published by |
24534
194eb4bd202b
maint: Update punctuation for GPL v3 license text.
Rik <rik@octave.org>
parents:
24494
diff
changeset
|
7 ## the Free Software Foundation, either version 3 of the License, or |
22755
3a2b891d0b33
maint: Standardize Copyright formatting.
Rik <rik@octave.org>
parents:
22323
diff
changeset
|
8 ## (at your option) any later version. |
5820 | 9 ## |
10 ## Octave is distributed in the hope that it will be useful, but | |
11 ## WITHOUT ANY WARRANTY; without even the implied warranty of | |
22755
3a2b891d0b33
maint: Standardize Copyright formatting.
Rik <rik@octave.org>
parents:
22323
diff
changeset
|
12 ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
3a2b891d0b33
maint: Standardize Copyright formatting.
Rik <rik@octave.org>
parents:
22323
diff
changeset
|
13 ## GNU General Public License for more details. |
5820 | 14 ## |
15 ## You should have received a copy of the GNU General Public License | |
7016 | 16 ## along with Octave; see the file COPYING. If not, see |
24534
194eb4bd202b
maint: Update punctuation for GPL v3 license text.
Rik <rik@octave.org>
parents:
24494
diff
changeset
|
17 ## <https://www.gnu.org/licenses/>. |
5820 | 18 |
19 ## -*- texinfo -*- | |
26154
af655eb15cdc
fplot.m: Add 1-input calling form, support for specifying PROP/VAL pairs.
Rik <rik@octave.org>
parents:
26150
diff
changeset
|
20 ## @deftypefn {} {} fplot (@var{fn}) |
af655eb15cdc
fplot.m: Add 1-input calling form, support for specifying PROP/VAL pairs.
Rik <rik@octave.org>
parents:
26150
diff
changeset
|
21 ## @deftypefnx {} {} fplot (@var{fn}, @var{limits}) |
20852
516bb87ea72e
2015 Code Sprint: remove class of function from docstring for all m-files.
Rik <rik@octave.org>
parents:
20715
diff
changeset
|
22 ## @deftypefnx {} {} fplot (@dots{}, @var{tol}) |
516bb87ea72e
2015 Code Sprint: remove class of function from docstring for all m-files.
Rik <rik@octave.org>
parents:
20715
diff
changeset
|
23 ## @deftypefnx {} {} fplot (@dots{}, @var{n}) |
516bb87ea72e
2015 Code Sprint: remove class of function from docstring for all m-files.
Rik <rik@octave.org>
parents:
20715
diff
changeset
|
24 ## @deftypefnx {} {} fplot (@dots{}, @var{fmt}) |
26154
af655eb15cdc
fplot.m: Add 1-input calling form, support for specifying PROP/VAL pairs.
Rik <rik@octave.org>
parents:
26150
diff
changeset
|
25 ## @deftypefnx {} {} fplot (@dots{}, @var{property}, @var{value}, @dots{}) |
af655eb15cdc
fplot.m: Add 1-input calling form, support for specifying PROP/VAL pairs.
Rik <rik@octave.org>
parents:
26150
diff
changeset
|
26 ## @deftypefnx {} {} fplot (@var{hax}, @dots{}) |
20852
516bb87ea72e
2015 Code Sprint: remove class of function from docstring for all m-files.
Rik <rik@octave.org>
parents:
20715
diff
changeset
|
27 ## @deftypefnx {} {[@var{x}, @var{y}] =} fplot (@dots{}) |
16950
b34202b24212
fplot.m: Overhaul function for Matlab compatibility and performance (bug #38961).
Rik <rik@octave.org>
parents:
16775
diff
changeset
|
28 ## Plot a function @var{fn} within the range defined by @var{limits}. |
b34202b24212
fplot.m: Overhaul function for Matlab compatibility and performance (bug #38961).
Rik <rik@octave.org>
parents:
16775
diff
changeset
|
29 ## |
17479 | 30 ## @var{fn} is a function handle, inline function, or string containing the |
31 ## name of the function to evaluate. | |
32 ## | |
33 ## The limits of the plot are of the form @w{@code{[@var{xlo}, @var{xhi}]}} or | |
26154
af655eb15cdc
fplot.m: Add 1-input calling form, support for specifying PROP/VAL pairs.
Rik <rik@octave.org>
parents:
26150
diff
changeset
|
34 ## @w{@code{[@var{xlo}, @var{xhi}, @var{ylo}, @var{yhi}]}}. If no limits |
af655eb15cdc
fplot.m: Add 1-input calling form, support for specifying PROP/VAL pairs.
Rik <rik@octave.org>
parents:
26150
diff
changeset
|
35 ## are specified the default is @code{[-5, 5]}. |
17479 | 36 ## |
16950
b34202b24212
fplot.m: Overhaul function for Matlab compatibility and performance (bug #38961).
Rik <rik@octave.org>
parents:
16775
diff
changeset
|
37 ## The next three arguments are all optional and any number of them may be |
b34202b24212
fplot.m: Overhaul function for Matlab compatibility and performance (bug #38961).
Rik <rik@octave.org>
parents:
16775
diff
changeset
|
38 ## given in any order. |
17479 | 39 ## |
16950
b34202b24212
fplot.m: Overhaul function for Matlab compatibility and performance (bug #38961).
Rik <rik@octave.org>
parents:
16775
diff
changeset
|
40 ## @var{tol} is the relative tolerance to use for the plot and defaults |
b34202b24212
fplot.m: Overhaul function for Matlab compatibility and performance (bug #38961).
Rik <rik@octave.org>
parents:
16775
diff
changeset
|
41 ## to 2e-3 (.2%). |
17479 | 42 ## |
43 ## @var{n} is the minimum number of points to use. When @var{n} is specified, | |
24493
dc6404ab6947
doc: Small tweaks to fplot and surfnorm docstrings (bug #52761).
Rik <rik@octave.org>
parents:
24431
diff
changeset
|
44 ## the maximum stepsize will be @code{(@var{xhi} - @var{xlo}) / @var{n}}. More |
17479 | 45 ## than @var{n} points may still be used in order to meet the relative |
46 ## tolerance requirement. | |
47 ## | |
16950
b34202b24212
fplot.m: Overhaul function for Matlab compatibility and performance (bug #38961).
Rik <rik@octave.org>
parents:
16775
diff
changeset
|
48 ## The @var{fmt} argument specifies the linestyle to be used by the plot |
b34202b24212
fplot.m: Overhaul function for Matlab compatibility and performance (bug #38961).
Rik <rik@octave.org>
parents:
16775
diff
changeset
|
49 ## command. |
b34202b24212
fplot.m: Overhaul function for Matlab compatibility and performance (bug #38961).
Rik <rik@octave.org>
parents:
16775
diff
changeset
|
50 ## |
26154
af655eb15cdc
fplot.m: Add 1-input calling form, support for specifying PROP/VAL pairs.
Rik <rik@octave.org>
parents:
26150
diff
changeset
|
51 ## Multiple property-value pairs may also be specified, but they must appear |
af655eb15cdc
fplot.m: Add 1-input calling form, support for specifying PROP/VAL pairs.
Rik <rik@octave.org>
parents:
26150
diff
changeset
|
52 ## in pairs. These arguments are applied to the line objects drawn by |
af655eb15cdc
fplot.m: Add 1-input calling form, support for specifying PROP/VAL pairs.
Rik <rik@octave.org>
parents:
26150
diff
changeset
|
53 ## @code{plot}. |
af655eb15cdc
fplot.m: Add 1-input calling form, support for specifying PROP/VAL pairs.
Rik <rik@octave.org>
parents:
26150
diff
changeset
|
54 ## |
24431
0c6cedafc71e
doc: Use 'axes' rather than 'axis' appropriately in docstrings.
Rik <rik@octave.org>
parents:
23219
diff
changeset
|
55 ## If the first argument @var{hax} is an axes handle, then plot into this axes, |
17159
d74e2b5bdeb5
fplot.m: Accept an axis handle as first input.
Rik <rik@octave.org>
parents:
17122
diff
changeset
|
56 ## rather than the current axes returned by @code{gca}. |
d74e2b5bdeb5
fplot.m: Accept an axis handle as first input.
Rik <rik@octave.org>
parents:
17122
diff
changeset
|
57 ## |
26154
af655eb15cdc
fplot.m: Add 1-input calling form, support for specifying PROP/VAL pairs.
Rik <rik@octave.org>
parents:
26150
diff
changeset
|
58 ## With no output arguments, the results are immediately plotted. With two |
af655eb15cdc
fplot.m: Add 1-input calling form, support for specifying PROP/VAL pairs.
Rik <rik@octave.org>
parents:
26150
diff
changeset
|
59 ## output arguments, the 2-D plot data is returned. The data can subsequently |
16951
a7c9be4a2c0f
fplot.m: Fix bad texinfo in docstring for changeset b34202b24212.
Rik <rik@octave.org>
parents:
16950
diff
changeset
|
60 ## be plotted manually with @code{plot (@var{x}, @var{y})}. |
16950
b34202b24212
fplot.m: Overhaul function for Matlab compatibility and performance (bug #38961).
Rik <rik@octave.org>
parents:
16775
diff
changeset
|
61 ## |
b34202b24212
fplot.m: Overhaul function for Matlab compatibility and performance (bug #38961).
Rik <rik@octave.org>
parents:
16775
diff
changeset
|
62 ## Example: |
5820 | 63 ## |
64 ## @example | |
9051
1bf0ce0930be
Grammar check TexInfo in all .m files
Rik <rdrider0-list@yahoo.com>
parents:
9040
diff
changeset
|
65 ## @group |
16951
a7c9be4a2c0f
fplot.m: Fix bad texinfo in docstring for changeset b34202b24212.
Rik <rik@octave.org>
parents:
16950
diff
changeset
|
66 ## fplot (@@cos, [0, 2*pi]) |
14327
4d917a6a858b
doc: Use Octave coding conventions in @example blocks of docstrings.
Rik <octave@nomad.inbox5.com>
parents:
14138
diff
changeset
|
67 ## fplot ("[cos(x), sin(x)]", [0, 2*pi]) |
9051
1bf0ce0930be
Grammar check TexInfo in all .m files
Rik <rdrider0-list@yahoo.com>
parents:
9040
diff
changeset
|
68 ## @end group |
5820 | 69 ## @end example |
16950
b34202b24212
fplot.m: Overhaul function for Matlab compatibility and performance (bug #38961).
Rik <rik@octave.org>
parents:
16775
diff
changeset
|
70 ## |
20205
59911f536b07
fplot.m: Document requirement of accepting vector inputs (bug #42050).
Rik <rik@octave.org>
parents:
19833
diff
changeset
|
71 ## Programming Notes: |
59911f536b07
fplot.m: Document requirement of accepting vector inputs (bug #42050).
Rik <rik@octave.org>
parents:
19833
diff
changeset
|
72 ## |
59911f536b07
fplot.m: Document requirement of accepting vector inputs (bug #42050).
Rik <rik@octave.org>
parents:
19833
diff
changeset
|
73 ## @code{fplot} works best with continuous functions. Functions with |
17122
eaab03308c0b
doc: Rewrite docstrings for most plot functions.
Rik <rik@octave.org>
parents:
17026
diff
changeset
|
74 ## discontinuities are unlikely to plot well. This restriction may be removed |
eaab03308c0b
doc: Rewrite docstrings for most plot functions.
Rik <rik@octave.org>
parents:
17026
diff
changeset
|
75 ## in the future. |
20205
59911f536b07
fplot.m: Document requirement of accepting vector inputs (bug #42050).
Rik <rik@octave.org>
parents:
19833
diff
changeset
|
76 ## |
24415
3cd47be4fcbe
fplot.m: Fix handling of non-vectorized input functions (bug #52673).
Rik <rik@octave.org>
parents:
23220
diff
changeset
|
77 ## @code{fplot} performance is better when the function accepts and returns a |
3cd47be4fcbe
fplot.m: Fix handling of non-vectorized input functions (bug #52673).
Rik <rik@octave.org>
parents:
23220
diff
changeset
|
78 ## vector argument. Consider this when writing user-defined functions and use |
3cd47be4fcbe
fplot.m: Fix handling of non-vectorized input functions (bug #52673).
Rik <rik@octave.org>
parents:
23220
diff
changeset
|
79 ## element-by-element operators such as @code{.*}, @code{./}, etc. See the |
3cd47be4fcbe
fplot.m: Fix handling of non-vectorized input functions (bug #52673).
Rik <rik@octave.org>
parents:
23220
diff
changeset
|
80 ## function @code{vectorize} for potentially converting inline or anonymous |
3cd47be4fcbe
fplot.m: Fix handling of non-vectorized input functions (bug #52673).
Rik <rik@octave.org>
parents:
23220
diff
changeset
|
81 ## functions to vectorized versions. |
20715
5b7643257978
Remove trailing whitespace at end of lines.
Rik <rik@octave.org>
parents:
20205
diff
changeset
|
82 ## |
20205
59911f536b07
fplot.m: Document requirement of accepting vector inputs (bug #42050).
Rik <rik@octave.org>
parents:
19833
diff
changeset
|
83 ## @seealso{ezplot, plot, vectorize} |
5820 | 84 ## @end deftypefn |
85 | |
17159
d74e2b5bdeb5
fplot.m: Accept an axis handle as first input.
Rik <rik@octave.org>
parents:
17122
diff
changeset
|
86 function [X, Y] = fplot (varargin) |
d74e2b5bdeb5
fplot.m: Accept an axis handle as first input.
Rik <rik@octave.org>
parents:
17122
diff
changeset
|
87 |
d74e2b5bdeb5
fplot.m: Accept an axis handle as first input.
Rik <rik@octave.org>
parents:
17122
diff
changeset
|
88 [hax, varargin, nargin] = __plt_get_axis_arg__ ("fplot", varargin{:}); |
5820 | 89 |
26154
af655eb15cdc
fplot.m: Add 1-input calling form, support for specifying PROP/VAL pairs.
Rik <rik@octave.org>
parents:
26150
diff
changeset
|
90 if (nargin < 1 || nargin > 5) |
16950
b34202b24212
fplot.m: Overhaul function for Matlab compatibility and performance (bug #38961).
Rik <rik@octave.org>
parents:
16775
diff
changeset
|
91 print_usage (); |
6781 | 92 endif |
93 | |
17159
d74e2b5bdeb5
fplot.m: Accept an axis handle as first input.
Rik <rik@octave.org>
parents:
17122
diff
changeset
|
94 fn = varargin{1}; |
6699 | 95 if (strcmp (typeinfo (fn), "inline function")) |
96 fn = vectorize (fn); | |
97 nam = formula (fn); | |
25803
23483673ba43
Use is_function_handle instead of isa (x, "function_handle").
Rik <rik@octave.org>
parents:
25054
diff
changeset
|
98 elseif (is_function_handle (fn)) |
6699 | 99 nam = func2str (fn); |
5820 | 100 elseif (all (isalnum (fn))) |
6781 | 101 nam = fn; |
10400
b14fd5116c29
Ensure that 'limits' is a 2 or 4 vector, and that 'fn' is a function
Soren Hauberg <hauberg@gmail.com>
parents:
9051
diff
changeset
|
102 elseif (ischar (fn)) |
16338
8aeb5d5c3747
fplot.m: Overhaul code to use modern coding practices.
Rik <rik@octave.org>
parents:
14868
diff
changeset
|
103 fn = vectorize (inline (fn)); |
8aeb5d5c3747
fplot.m: Overhaul code to use modern coding practices.
Rik <rik@octave.org>
parents:
14868
diff
changeset
|
104 nam = formula (fn); |
5820 | 105 else |
16338
8aeb5d5c3747
fplot.m: Overhaul code to use modern coding practices.
Rik <rik@octave.org>
parents:
14868
diff
changeset
|
106 error ("fplot: FN must be a function handle, inline function, or string"); |
6781 | 107 endif |
108 | |
26154
af655eb15cdc
fplot.m: Add 1-input calling form, support for specifying PROP/VAL pairs.
Rik <rik@octave.org>
parents:
26150
diff
changeset
|
109 if (nargin > 1 && isnumeric (varargin{2})) |
af655eb15cdc
fplot.m: Add 1-input calling form, support for specifying PROP/VAL pairs.
Rik <rik@octave.org>
parents:
26150
diff
changeset
|
110 limits = varargin{2}; |
af655eb15cdc
fplot.m: Add 1-input calling form, support for specifying PROP/VAL pairs.
Rik <rik@octave.org>
parents:
26150
diff
changeset
|
111 if (iscomplex (limits) || (numel (limits) != 2 && numel (limits) != 4)) |
af655eb15cdc
fplot.m: Add 1-input calling form, support for specifying PROP/VAL pairs.
Rik <rik@octave.org>
parents:
26150
diff
changeset
|
112 error ("fplot: LIMITS must be a real vector with 2 or 4 elements"); |
af655eb15cdc
fplot.m: Add 1-input calling form, support for specifying PROP/VAL pairs.
Rik <rik@octave.org>
parents:
26150
diff
changeset
|
113 endif |
af655eb15cdc
fplot.m: Add 1-input calling form, support for specifying PROP/VAL pairs.
Rik <rik@octave.org>
parents:
26150
diff
changeset
|
114 i = 3; |
af655eb15cdc
fplot.m: Add 1-input calling form, support for specifying PROP/VAL pairs.
Rik <rik@octave.org>
parents:
26150
diff
changeset
|
115 else |
af655eb15cdc
fplot.m: Add 1-input calling form, support for specifying PROP/VAL pairs.
Rik <rik@octave.org>
parents:
26150
diff
changeset
|
116 limits = [-5, 5]; |
af655eb15cdc
fplot.m: Add 1-input calling form, support for specifying PROP/VAL pairs.
Rik <rik@octave.org>
parents:
26150
diff
changeset
|
117 i = 2; |
16950
b34202b24212
fplot.m: Overhaul function for Matlab compatibility and performance (bug #38961).
Rik <rik@octave.org>
parents:
16775
diff
changeset
|
118 endif |
b34202b24212
fplot.m: Overhaul function for Matlab compatibility and performance (bug #38961).
Rik <rik@octave.org>
parents:
16775
diff
changeset
|
119 |
b34202b24212
fplot.m: Overhaul function for Matlab compatibility and performance (bug #38961).
Rik <rik@octave.org>
parents:
16775
diff
changeset
|
120 n = 5; |
b34202b24212
fplot.m: Overhaul function for Matlab compatibility and performance (bug #38961).
Rik <rik@octave.org>
parents:
16775
diff
changeset
|
121 tol = 2e-3; |
26154
af655eb15cdc
fplot.m: Add 1-input calling form, support for specifying PROP/VAL pairs.
Rik <rik@octave.org>
parents:
26150
diff
changeset
|
122 fmt = {}; |
af655eb15cdc
fplot.m: Add 1-input calling form, support for specifying PROP/VAL pairs.
Rik <rik@octave.org>
parents:
26150
diff
changeset
|
123 while (i <= numel (varargin)) |
16950
b34202b24212
fplot.m: Overhaul function for Matlab compatibility and performance (bug #38961).
Rik <rik@octave.org>
parents:
16775
diff
changeset
|
124 arg = varargin{i}; |
b34202b24212
fplot.m: Overhaul function for Matlab compatibility and performance (bug #38961).
Rik <rik@octave.org>
parents:
16775
diff
changeset
|
125 if (ischar (arg)) |
26154
af655eb15cdc
fplot.m: Add 1-input calling form, support for specifying PROP/VAL pairs.
Rik <rik@octave.org>
parents:
26150
diff
changeset
|
126 [~, valid_fmt] = __pltopt__ ("fplot", arg, false); |
af655eb15cdc
fplot.m: Add 1-input calling form, support for specifying PROP/VAL pairs.
Rik <rik@octave.org>
parents:
26150
diff
changeset
|
127 if (valid_fmt) |
af655eb15cdc
fplot.m: Add 1-input calling form, support for specifying PROP/VAL pairs.
Rik <rik@octave.org>
parents:
26150
diff
changeset
|
128 fmt(end+1) = arg; |
af655eb15cdc
fplot.m: Add 1-input calling form, support for specifying PROP/VAL pairs.
Rik <rik@octave.org>
parents:
26150
diff
changeset
|
129 else |
af655eb15cdc
fplot.m: Add 1-input calling form, support for specifying PROP/VAL pairs.
Rik <rik@octave.org>
parents:
26150
diff
changeset
|
130 if (i == numel (varargin)) |
af655eb15cdc
fplot.m: Add 1-input calling form, support for specifying PROP/VAL pairs.
Rik <rik@octave.org>
parents:
26150
diff
changeset
|
131 error ("fplot: bad input in position %d", i); |
af655eb15cdc
fplot.m: Add 1-input calling form, support for specifying PROP/VAL pairs.
Rik <rik@octave.org>
parents:
26150
diff
changeset
|
132 endif |
af655eb15cdc
fplot.m: Add 1-input calling form, support for specifying PROP/VAL pairs.
Rik <rik@octave.org>
parents:
26150
diff
changeset
|
133 fmt(end+(1:2)) = varargin([i, i+1]); |
af655eb15cdc
fplot.m: Add 1-input calling form, support for specifying PROP/VAL pairs.
Rik <rik@octave.org>
parents:
26150
diff
changeset
|
134 i++; # Skip PROPERTY. |
af655eb15cdc
fplot.m: Add 1-input calling form, support for specifying PROP/VAL pairs.
Rik <rik@octave.org>
parents:
26150
diff
changeset
|
135 endif |
16950
b34202b24212
fplot.m: Overhaul function for Matlab compatibility and performance (bug #38961).
Rik <rik@octave.org>
parents:
16775
diff
changeset
|
136 elseif (isnumeric (arg) && isscalar (arg) && arg > 0) |
b34202b24212
fplot.m: Overhaul function for Matlab compatibility and performance (bug #38961).
Rik <rik@octave.org>
parents:
16775
diff
changeset
|
137 if (arg == fix (arg)) |
b34202b24212
fplot.m: Overhaul function for Matlab compatibility and performance (bug #38961).
Rik <rik@octave.org>
parents:
16775
diff
changeset
|
138 n = arg; |
b34202b24212
fplot.m: Overhaul function for Matlab compatibility and performance (bug #38961).
Rik <rik@octave.org>
parents:
16775
diff
changeset
|
139 else |
b34202b24212
fplot.m: Overhaul function for Matlab compatibility and performance (bug #38961).
Rik <rik@octave.org>
parents:
16775
diff
changeset
|
140 tol = arg; |
b34202b24212
fplot.m: Overhaul function for Matlab compatibility and performance (bug #38961).
Rik <rik@octave.org>
parents:
16775
diff
changeset
|
141 endif |
b34202b24212
fplot.m: Overhaul function for Matlab compatibility and performance (bug #38961).
Rik <rik@octave.org>
parents:
16775
diff
changeset
|
142 else |
26154
af655eb15cdc
fplot.m: Add 1-input calling form, support for specifying PROP/VAL pairs.
Rik <rik@octave.org>
parents:
26150
diff
changeset
|
143 error ("fplot: bad input in position %d", i); |
16950
b34202b24212
fplot.m: Overhaul function for Matlab compatibility and performance (bug #38961).
Rik <rik@octave.org>
parents:
16775
diff
changeset
|
144 endif |
26154
af655eb15cdc
fplot.m: Add 1-input calling form, support for specifying PROP/VAL pairs.
Rik <rik@octave.org>
parents:
26150
diff
changeset
|
145 i++; |
af655eb15cdc
fplot.m: Add 1-input calling form, support for specifying PROP/VAL pairs.
Rik <rik@octave.org>
parents:
26150
diff
changeset
|
146 endwhile |
16950
b34202b24212
fplot.m: Overhaul function for Matlab compatibility and performance (bug #38961).
Rik <rik@octave.org>
parents:
16775
diff
changeset
|
147 |
19593
446c46af4b42
strip trailing whitespace from most source files
John W. Eaton <jwe@octave.org>
parents:
18629
diff
changeset
|
148 if (n != 5) |
446c46af4b42
strip trailing whitespace from most source files
John W. Eaton <jwe@octave.org>
parents:
18629
diff
changeset
|
149 ## n was specified |
16950
b34202b24212
fplot.m: Overhaul function for Matlab compatibility and performance (bug #38961).
Rik <rik@octave.org>
parents:
16775
diff
changeset
|
150 x0 = linspace (limits(1), limits(2), n/2 + 1)'; |
6781 | 151 else |
16950
b34202b24212
fplot.m: Overhaul function for Matlab compatibility and performance (bug #38961).
Rik <rik@octave.org>
parents:
16775
diff
changeset
|
152 x0 = linspace (limits(1), limits(2), 5)'; |
b34202b24212
fplot.m: Overhaul function for Matlab compatibility and performance (bug #38961).
Rik <rik@octave.org>
parents:
16775
diff
changeset
|
153 n = 8; |
5820 | 154 endif |
155 | |
26150
46757ec0bac2
fplot.m: Use try/catch to avoid errors with non-vectorized functions (bug #55134).
Rik <rik@octave.org>
parents:
25803
diff
changeset
|
156 try |
46757ec0bac2
fplot.m: Use try/catch to avoid errors with non-vectorized functions (bug #55134).
Rik <rik@octave.org>
parents:
25803
diff
changeset
|
157 y0 = feval (fn, x0); |
46757ec0bac2
fplot.m: Use try/catch to avoid errors with non-vectorized functions (bug #55134).
Rik <rik@octave.org>
parents:
25803
diff
changeset
|
158 if (isscalar (y0)) |
46757ec0bac2
fplot.m: Use try/catch to avoid errors with non-vectorized functions (bug #55134).
Rik <rik@octave.org>
parents:
25803
diff
changeset
|
159 warning ("fplot: FN is not a vectorized function which reduces performance"); |
46757ec0bac2
fplot.m: Use try/catch to avoid errors with non-vectorized functions (bug #55134).
Rik <rik@octave.org>
parents:
25803
diff
changeset
|
160 fn = @(x) arrayfun (fn, x); # Create a new fn that accepts vectors |
46757ec0bac2
fplot.m: Use try/catch to avoid errors with non-vectorized functions (bug #55134).
Rik <rik@octave.org>
parents:
25803
diff
changeset
|
161 y0 = feval (fn, x0); |
46757ec0bac2
fplot.m: Use try/catch to avoid errors with non-vectorized functions (bug #55134).
Rik <rik@octave.org>
parents:
25803
diff
changeset
|
162 endif |
46757ec0bac2
fplot.m: Use try/catch to avoid errors with non-vectorized functions (bug #55134).
Rik <rik@octave.org>
parents:
25803
diff
changeset
|
163 catch |
46757ec0bac2
fplot.m: Use try/catch to avoid errors with non-vectorized functions (bug #55134).
Rik <rik@octave.org>
parents:
25803
diff
changeset
|
164 ## feval failed, maybe it is because the function is not vectorized? |
24415
3cd47be4fcbe
fplot.m: Fix handling of non-vectorized input functions (bug #52673).
Rik <rik@octave.org>
parents:
23220
diff
changeset
|
165 fn = @(x) arrayfun (fn, x); # Create a new fn that accepts vectors |
3cd47be4fcbe
fplot.m: Fix handling of non-vectorized input functions (bug #52673).
Rik <rik@octave.org>
parents:
23220
diff
changeset
|
166 y0 = feval (fn, x0); |
26150
46757ec0bac2
fplot.m: Use try/catch to avoid errors with non-vectorized functions (bug #55134).
Rik <rik@octave.org>
parents:
25803
diff
changeset
|
167 warning ("fplot: FN is not a vectorized function which reduces performance"); |
46757ec0bac2
fplot.m: Use try/catch to avoid errors with non-vectorized functions (bug #55134).
Rik <rik@octave.org>
parents:
25803
diff
changeset
|
168 end_try_catch |
46757ec0bac2
fplot.m: Use try/catch to avoid errors with non-vectorized functions (bug #55134).
Rik <rik@octave.org>
parents:
25803
diff
changeset
|
169 |
46757ec0bac2
fplot.m: Use try/catch to avoid errors with non-vectorized functions (bug #55134).
Rik <rik@octave.org>
parents:
25803
diff
changeset
|
170 x = linspace (limits(1), limits(2), n)'; |
46757ec0bac2
fplot.m: Use try/catch to avoid errors with non-vectorized functions (bug #55134).
Rik <rik@octave.org>
parents:
25803
diff
changeset
|
171 y = feval (fn, x); |
24415
3cd47be4fcbe
fplot.m: Fix handling of non-vectorized input functions (bug #52673).
Rik <rik@octave.org>
parents:
23220
diff
changeset
|
172 |
21831
1077f09a0cfd
fplot.m: Handle input functions which do not respect input data orientation (bug #48034).
Rik <rik@octave.org>
parents:
20852
diff
changeset
|
173 if (rows (x0) == rows (y0)) |
1077f09a0cfd
fplot.m: Handle input functions which do not respect input data orientation (bug #48034).
Rik <rik@octave.org>
parents:
20852
diff
changeset
|
174 fcn_transpose = false; |
1077f09a0cfd
fplot.m: Handle input functions which do not respect input data orientation (bug #48034).
Rik <rik@octave.org>
parents:
20852
diff
changeset
|
175 elseif (rows (x0) == columns (y0)) |
1077f09a0cfd
fplot.m: Handle input functions which do not respect input data orientation (bug #48034).
Rik <rik@octave.org>
parents:
20852
diff
changeset
|
176 fcn_transpose = true; |
1077f09a0cfd
fplot.m: Handle input functions which do not respect input data orientation (bug #48034).
Rik <rik@octave.org>
parents:
20852
diff
changeset
|
177 y0 = y0.'; |
1077f09a0cfd
fplot.m: Handle input functions which do not respect input data orientation (bug #48034).
Rik <rik@octave.org>
parents:
20852
diff
changeset
|
178 y = y.'; |
1077f09a0cfd
fplot.m: Handle input functions which do not respect input data orientation (bug #48034).
Rik <rik@octave.org>
parents:
20852
diff
changeset
|
179 else |
1077f09a0cfd
fplot.m: Handle input functions which do not respect input data orientation (bug #48034).
Rik <rik@octave.org>
parents:
20852
diff
changeset
|
180 error ("fplot: invalid function FN (# of outputs not equal to inputs)"); |
8145
7ef5b1b4e029
fplot.m: call axis after plot
John W. Eaton <jwe@octave.org>
parents:
7280
diff
changeset
|
181 endif |
7ef5b1b4e029
fplot.m: call axis after plot
John W. Eaton <jwe@octave.org>
parents:
7280
diff
changeset
|
182 |
16950
b34202b24212
fplot.m: Overhaul function for Matlab compatibility and performance (bug #38961).
Rik <rik@octave.org>
parents:
16775
diff
changeset
|
183 err0 = Inf; |
b34202b24212
fplot.m: Overhaul function for Matlab compatibility and performance (bug #38961).
Rik <rik@octave.org>
parents:
16775
diff
changeset
|
184 |
21831
1077f09a0cfd
fplot.m: Handle input functions which do not respect input data orientation (bug #48034).
Rik <rik@octave.org>
parents:
20852
diff
changeset
|
185 ## FIXME: This algorithm should really use adaptive scaling as |
16950
b34202b24212
fplot.m: Overhaul function for Matlab compatibility and performance (bug #38961).
Rik <rik@octave.org>
parents:
16775
diff
changeset
|
186 ## the numerical quadrature algorithms do so that extra points are |
b34202b24212
fplot.m: Overhaul function for Matlab compatibility and performance (bug #38961).
Rik <rik@octave.org>
parents:
16775
diff
changeset
|
187 ## used where they are needed and not spread evenly over the entire |
17479 | 188 ## x-range. Try any function with a discontinuity, such as |
189 ## fplot (@tan, [-2, 2]) or fplot ("1./x", [-3, 2]), to see the | |
16950
b34202b24212
fplot.m: Overhaul function for Matlab compatibility and performance (bug #38961).
Rik <rik@octave.org>
parents:
16775
diff
changeset
|
190 ## problems with the current solution. |
b34202b24212
fplot.m: Overhaul function for Matlab compatibility and performance (bug #38961).
Rik <rik@octave.org>
parents:
16775
diff
changeset
|
191 |
b34202b24212
fplot.m: Overhaul function for Matlab compatibility and performance (bug #38961).
Rik <rik@octave.org>
parents:
16775
diff
changeset
|
192 while (n < 2^18) # Something is wrong if we need more than 250K points |
18629
6fdd3ab55b78
undo unintended changes to fplot in changeset 37c300acfcfd
John W. Eaton <jwe@octave.org>
parents:
18627
diff
changeset
|
193 yi = interp1 (x0, y0, x, "linear"); |
16950
b34202b24212
fplot.m: Overhaul function for Matlab compatibility and performance (bug #38961).
Rik <rik@octave.org>
parents:
16775
diff
changeset
|
194 ## relative error calculation using average of [yi,y] as reference |
b34202b24212
fplot.m: Overhaul function for Matlab compatibility and performance (bug #38961).
Rik <rik@octave.org>
parents:
16775
diff
changeset
|
195 ## since neither estimate is known a priori to be better than the other. |
24415
3cd47be4fcbe
fplot.m: Fix handling of non-vectorized input functions (bug #52673).
Rik <rik@octave.org>
parents:
23220
diff
changeset
|
196 err = 0.5 * max (abs ((yi - y) ./ (yi + y + eps))(:)); |
16950
b34202b24212
fplot.m: Overhaul function for Matlab compatibility and performance (bug #38961).
Rik <rik@octave.org>
parents:
16775
diff
changeset
|
197 if (err < tol || abs (err - err0) < tol/2) |
b34202b24212
fplot.m: Overhaul function for Matlab compatibility and performance (bug #38961).
Rik <rik@octave.org>
parents:
16775
diff
changeset
|
198 ## Either relative tolerance has been met OR |
b34202b24212
fplot.m: Overhaul function for Matlab compatibility and performance (bug #38961).
Rik <rik@octave.org>
parents:
16775
diff
changeset
|
199 ## algorithm has stopped making any reasonable progress per iteration. |
b34202b24212
fplot.m: Overhaul function for Matlab compatibility and performance (bug #38961).
Rik <rik@octave.org>
parents:
16775
diff
changeset
|
200 break; |
b34202b24212
fplot.m: Overhaul function for Matlab compatibility and performance (bug #38961).
Rik <rik@octave.org>
parents:
16775
diff
changeset
|
201 endif |
b34202b24212
fplot.m: Overhaul function for Matlab compatibility and performance (bug #38961).
Rik <rik@octave.org>
parents:
16775
diff
changeset
|
202 x0 = x; |
b34202b24212
fplot.m: Overhaul function for Matlab compatibility and performance (bug #38961).
Rik <rik@octave.org>
parents:
16775
diff
changeset
|
203 y0 = y; |
b34202b24212
fplot.m: Overhaul function for Matlab compatibility and performance (bug #38961).
Rik <rik@octave.org>
parents:
16775
diff
changeset
|
204 err0 = err; |
b34202b24212
fplot.m: Overhaul function for Matlab compatibility and performance (bug #38961).
Rik <rik@octave.org>
parents:
16775
diff
changeset
|
205 n = 2 * (n - 1) + 1; |
b34202b24212
fplot.m: Overhaul function for Matlab compatibility and performance (bug #38961).
Rik <rik@octave.org>
parents:
16775
diff
changeset
|
206 x = linspace (limits(1), limits(2), n)'; |
b34202b24212
fplot.m: Overhaul function for Matlab compatibility and performance (bug #38961).
Rik <rik@octave.org>
parents:
16775
diff
changeset
|
207 y = feval (fn, x); |
21831
1077f09a0cfd
fplot.m: Handle input functions which do not respect input data orientation (bug #48034).
Rik <rik@octave.org>
parents:
20852
diff
changeset
|
208 if (fcn_transpose) |
1077f09a0cfd
fplot.m: Handle input functions which do not respect input data orientation (bug #48034).
Rik <rik@octave.org>
parents:
20852
diff
changeset
|
209 y = y.'; |
1077f09a0cfd
fplot.m: Handle input functions which do not respect input data orientation (bug #48034).
Rik <rik@octave.org>
parents:
20852
diff
changeset
|
210 endif |
16950
b34202b24212
fplot.m: Overhaul function for Matlab compatibility and performance (bug #38961).
Rik <rik@octave.org>
parents:
16775
diff
changeset
|
211 endwhile |
b34202b24212
fplot.m: Overhaul function for Matlab compatibility and performance (bug #38961).
Rik <rik@octave.org>
parents:
16775
diff
changeset
|
212 |
b34202b24212
fplot.m: Overhaul function for Matlab compatibility and performance (bug #38961).
Rik <rik@octave.org>
parents:
16775
diff
changeset
|
213 if (nargout == 2) |
b34202b24212
fplot.m: Overhaul function for Matlab compatibility and performance (bug #38961).
Rik <rik@octave.org>
parents:
16775
diff
changeset
|
214 X = x; |
b34202b24212
fplot.m: Overhaul function for Matlab compatibility and performance (bug #38961).
Rik <rik@octave.org>
parents:
16775
diff
changeset
|
215 Y = y; |
6781 | 216 else |
17159
d74e2b5bdeb5
fplot.m: Accept an axis handle as first input.
Rik <rik@octave.org>
parents:
17122
diff
changeset
|
217 if (isempty (hax)) |
d74e2b5bdeb5
fplot.m: Accept an axis handle as first input.
Rik <rik@octave.org>
parents:
17122
diff
changeset
|
218 hax = gca (); |
d74e2b5bdeb5
fplot.m: Accept an axis handle as first input.
Rik <rik@octave.org>
parents:
17122
diff
changeset
|
219 endif |
26154
af655eb15cdc
fplot.m: Add 1-input calling form, support for specifying PROP/VAL pairs.
Rik <rik@octave.org>
parents:
26150
diff
changeset
|
220 plot (hax, x, y, fmt{:}); |
17159
d74e2b5bdeb5
fplot.m: Accept an axis handle as first input.
Rik <rik@octave.org>
parents:
17122
diff
changeset
|
221 axis (hax, limits); |
26154
af655eb15cdc
fplot.m: Add 1-input calling form, support for specifying PROP/VAL pairs.
Rik <rik@octave.org>
parents:
26150
diff
changeset
|
222 ## FIXME: If hold is on, then this erases the existing legend rather than |
af655eb15cdc
fplot.m: Add 1-input calling form, support for specifying PROP/VAL pairs.
Rik <rik@octave.org>
parents:
26150
diff
changeset
|
223 ## adding to it. |
16950
b34202b24212
fplot.m: Overhaul function for Matlab compatibility and performance (bug #38961).
Rik <rik@octave.org>
parents:
16775
diff
changeset
|
224 if (isvector (y)) |
17159
d74e2b5bdeb5
fplot.m: Accept an axis handle as first input.
Rik <rik@octave.org>
parents:
17122
diff
changeset
|
225 legend (hax, nam); |
16950
b34202b24212
fplot.m: Overhaul function for Matlab compatibility and performance (bug #38961).
Rik <rik@octave.org>
parents:
16775
diff
changeset
|
226 else |
b34202b24212
fplot.m: Overhaul function for Matlab compatibility and performance (bug #38961).
Rik <rik@octave.org>
parents:
16775
diff
changeset
|
227 for i = 1:columns (y) |
b34202b24212
fplot.m: Overhaul function for Matlab compatibility and performance (bug #38961).
Rik <rik@octave.org>
parents:
16775
diff
changeset
|
228 nams{i} = sprintf ("%s(:,%i)", nam, i); |
b34202b24212
fplot.m: Overhaul function for Matlab compatibility and performance (bug #38961).
Rik <rik@octave.org>
parents:
16775
diff
changeset
|
229 endfor |
17159
d74e2b5bdeb5
fplot.m: Accept an axis handle as first input.
Rik <rik@octave.org>
parents:
17122
diff
changeset
|
230 legend (hax, nams{:}); |
16950
b34202b24212
fplot.m: Overhaul function for Matlab compatibility and performance (bug #38961).
Rik <rik@octave.org>
parents:
16775
diff
changeset
|
231 endif |
6781 | 232 endif |
16338
8aeb5d5c3747
fplot.m: Overhaul code to use modern coding practices.
Rik <rik@octave.org>
parents:
14868
diff
changeset
|
233 |
5820 | 234 endfunction |
7245 | 235 |
236 | |
237 %!demo | |
14237
11949c9795a0
Revamp %!demos in m-files to use Octave coding conventions on spacing, etc.
Rik <octave@nomad.inbox5.com>
parents:
14138
diff
changeset
|
238 %! clf; |
16950
b34202b24212
fplot.m: Overhaul function for Matlab compatibility and performance (bug #38961).
Rik <rik@octave.org>
parents:
16775
diff
changeset
|
239 %! fplot (@cos, [0, 2*pi]); |
22302
1c4cd12987f5
Use Octave syntax in graphics demos.
Rik <rik@octave.org>
parents:
21831
diff
changeset
|
240 %! title ("fplot() single function"); |
14237
11949c9795a0
Revamp %!demos in m-files to use Octave coding conventions on spacing, etc.
Rik <octave@nomad.inbox5.com>
parents:
14138
diff
changeset
|
241 |
11949c9795a0
Revamp %!demos in m-files to use Octave coding conventions on spacing, etc.
Rik <octave@nomad.inbox5.com>
parents:
14138
diff
changeset
|
242 %!demo |
11949c9795a0
Revamp %!demos in m-files to use Octave coding conventions on spacing, etc.
Rik <octave@nomad.inbox5.com>
parents:
14138
diff
changeset
|
243 %! clf; |
22302
1c4cd12987f5
Use Octave syntax in graphics demos.
Rik <rik@octave.org>
parents:
21831
diff
changeset
|
244 %! fplot ("[cos(x), sin(x)]", [0, 2*pi]); |
1c4cd12987f5
Use Octave syntax in graphics demos.
Rik <rik@octave.org>
parents:
21831
diff
changeset
|
245 %! title ("fplot() multiple functions"); |
14237
11949c9795a0
Revamp %!demos in m-files to use Octave coding conventions on spacing, etc.
Rik <octave@nomad.inbox5.com>
parents:
14138
diff
changeset
|
246 |
16950
b34202b24212
fplot.m: Overhaul function for Matlab compatibility and performance (bug #38961).
Rik <rik@octave.org>
parents:
16775
diff
changeset
|
247 %!demo |
b34202b24212
fplot.m: Overhaul function for Matlab compatibility and performance (bug #38961).
Rik <rik@octave.org>
parents:
16775
diff
changeset
|
248 %! clf; |
17026
be52288f827b
Tweak some plotting demos for messages and spelling.
Rik <rik@octave.org>
parents:
16951
diff
changeset
|
249 %! fh = @(x) sin (pi*x) ./ (pi*x); |
16950
b34202b24212
fplot.m: Overhaul function for Matlab compatibility and performance (bug #38961).
Rik <rik@octave.org>
parents:
16775
diff
changeset
|
250 %! fplot (fh, [-5, 5]); |
22302
1c4cd12987f5
Use Octave syntax in graphics demos.
Rik <rik@octave.org>
parents:
21831
diff
changeset
|
251 %! title ("fplot() sinc function (possible division by 0, near 0)"); |
16950
b34202b24212
fplot.m: Overhaul function for Matlab compatibility and performance (bug #38961).
Rik <rik@octave.org>
parents:
16775
diff
changeset
|
252 |
b34202b24212
fplot.m: Overhaul function for Matlab compatibility and performance (bug #38961).
Rik <rik@octave.org>
parents:
16775
diff
changeset
|
253 %!test |
21831
1077f09a0cfd
fplot.m: Handle input functions which do not respect input data orientation (bug #48034).
Rik <rik@octave.org>
parents:
20852
diff
changeset
|
254 %! ## Multi-valued function |
16950
b34202b24212
fplot.m: Overhaul function for Matlab compatibility and performance (bug #38961).
Rik <rik@octave.org>
parents:
16775
diff
changeset
|
255 %! [x, y] = fplot ("[cos(x), sin(x)]", [0, 2*pi]); |
b34202b24212
fplot.m: Overhaul function for Matlab compatibility and performance (bug #38961).
Rik <rik@octave.org>
parents:
16775
diff
changeset
|
256 %! assert (columns (y) == 2); |
b34202b24212
fplot.m: Overhaul function for Matlab compatibility and performance (bug #38961).
Rik <rik@octave.org>
parents:
16775
diff
changeset
|
257 %! assert (rows (x) == rows (y)); |
b34202b24212
fplot.m: Overhaul function for Matlab compatibility and performance (bug #38961).
Rik <rik@octave.org>
parents:
16775
diff
changeset
|
258 %! assert (y, [cos(x), sin(x)], -2e-3); |
b34202b24212
fplot.m: Overhaul function for Matlab compatibility and performance (bug #38961).
Rik <rik@octave.org>
parents:
16775
diff
changeset
|
259 |
21831
1077f09a0cfd
fplot.m: Handle input functions which do not respect input data orientation (bug #48034).
Rik <rik@octave.org>
parents:
20852
diff
changeset
|
260 %!test |
1077f09a0cfd
fplot.m: Handle input functions which do not respect input data orientation (bug #48034).
Rik <rik@octave.org>
parents:
20852
diff
changeset
|
261 %! ## Function requiring transpose |
1077f09a0cfd
fplot.m: Handle input functions which do not respect input data orientation (bug #48034).
Rik <rik@octave.org>
parents:
20852
diff
changeset
|
262 %! fn = @(x) 2 * x(:).'; |
1077f09a0cfd
fplot.m: Handle input functions which do not respect input data orientation (bug #48034).
Rik <rik@octave.org>
parents:
20852
diff
changeset
|
263 %! [x, y] = fplot (fn, [-1, 1]); |
1077f09a0cfd
fplot.m: Handle input functions which do not respect input data orientation (bug #48034).
Rik <rik@octave.org>
parents:
20852
diff
changeset
|
264 %! assert (columns (y) == 1); |
1077f09a0cfd
fplot.m: Handle input functions which do not respect input data orientation (bug #48034).
Rik <rik@octave.org>
parents:
20852
diff
changeset
|
265 %! assert (rows (x) == rows (y)); |
1077f09a0cfd
fplot.m: Handle input functions which do not respect input data orientation (bug #48034).
Rik <rik@octave.org>
parents:
20852
diff
changeset
|
266 %! assert (y, 2*x); |
1077f09a0cfd
fplot.m: Handle input functions which do not respect input data orientation (bug #48034).
Rik <rik@octave.org>
parents:
20852
diff
changeset
|
267 |
1077f09a0cfd
fplot.m: Handle input functions which do not respect input data orientation (bug #48034).
Rik <rik@octave.org>
parents:
20852
diff
changeset
|
268 %!test |
1077f09a0cfd
fplot.m: Handle input functions which do not respect input data orientation (bug #48034).
Rik <rik@octave.org>
parents:
20852
diff
changeset
|
269 %! ## Constant value function |
24415
3cd47be4fcbe
fplot.m: Fix handling of non-vectorized input functions (bug #52673).
Rik <rik@octave.org>
parents:
23220
diff
changeset
|
270 %! fn = @(x) 0; |
21831
1077f09a0cfd
fplot.m: Handle input functions which do not respect input data orientation (bug #48034).
Rik <rik@octave.org>
parents:
20852
diff
changeset
|
271 %! [x, y] = fplot (fn, [-1, 1]); |
1077f09a0cfd
fplot.m: Handle input functions which do not respect input data orientation (bug #48034).
Rik <rik@octave.org>
parents:
20852
diff
changeset
|
272 %! assert (columns (y) == 1); |
1077f09a0cfd
fplot.m: Handle input functions which do not respect input data orientation (bug #48034).
Rik <rik@octave.org>
parents:
20852
diff
changeset
|
273 %! assert (rows (x) == rows (y)); |
24415
3cd47be4fcbe
fplot.m: Fix handling of non-vectorized input functions (bug #52673).
Rik <rik@octave.org>
parents:
23220
diff
changeset
|
274 %! assert (y, repmat ([0], size (x))); |
21831
1077f09a0cfd
fplot.m: Handle input functions which do not respect input data orientation (bug #48034).
Rik <rik@octave.org>
parents:
20852
diff
changeset
|
275 |
19833
9fc020886ae9
maint: Clean up m-files to follow Octave coding conventions.
Rik <rik@octave.org>
parents:
19697
diff
changeset
|
276 ## Test input validation |
26154
af655eb15cdc
fplot.m: Add 1-input calling form, support for specifying PROP/VAL pairs.
Rik <rik@octave.org>
parents:
26150
diff
changeset
|
277 %!error fplot () |
16950
b34202b24212
fplot.m: Overhaul function for Matlab compatibility and performance (bug #38961).
Rik <rik@octave.org>
parents:
16775
diff
changeset
|
278 %!error fplot (1,2,3,4,5,6) |
b34202b24212
fplot.m: Overhaul function for Matlab compatibility and performance (bug #38961).
Rik <rik@octave.org>
parents:
16775
diff
changeset
|
279 %!error <FN must be a function handle> fplot (1, [0 1]) |
16775
5ec3f4aea91c
fplot.m: Fix bug when FN is a constant function (bug #39287)
Rik <rik@octave.org>
parents:
16338
diff
changeset
|
280 %!error <LIMITS must be a real vector> fplot (@cos, [i, 2*i]) |
5ec3f4aea91c
fplot.m: Fix bug when FN is a constant function (bug #39287)
Rik <rik@octave.org>
parents:
16338
diff
changeset
|
281 %!error <LIMITS must be a real vector with 2 or 4> fplot (@cos, [1]) |
5ec3f4aea91c
fplot.m: Fix bug when FN is a constant function (bug #39287)
Rik <rik@octave.org>
parents:
16338
diff
changeset
|
282 %!error <LIMITS must be a real vector with 2 or 4> fplot (@cos, [1 2 3]) |
26154
af655eb15cdc
fplot.m: Add 1-input calling form, support for specifying PROP/VAL pairs.
Rik <rik@octave.org>
parents:
26150
diff
changeset
|
283 %!error <bad input in position 2> fplot (@cos, "linewidth") |
af655eb15cdc
fplot.m: Add 1-input calling form, support for specifying PROP/VAL pairs.
Rik <rik@octave.org>
parents:
26150
diff
changeset
|
284 %!error <bad input in position 3> fplot (@cos, [-1,1], {1}) |
af655eb15cdc
fplot.m: Add 1-input calling form, support for specifying PROP/VAL pairs.
Rik <rik@octave.org>
parents:
26150
diff
changeset
|
285 %!warning <FN is not a vectorized function> |
af655eb15cdc
fplot.m: Add 1-input calling form, support for specifying PROP/VAL pairs.
Rik <rik@octave.org>
parents:
26150
diff
changeset
|
286 %! fn = @(x) 0; |
af655eb15cdc
fplot.m: Add 1-input calling form, support for specifying PROP/VAL pairs.
Rik <rik@octave.org>
parents:
26150
diff
changeset
|
287 %! [x,y] = fplot (fn, [-1,1]); |
21831
1077f09a0cfd
fplot.m: Handle input functions which do not respect input data orientation (bug #48034).
Rik <rik@octave.org>
parents:
20852
diff
changeset
|
288 %!error <invalid function FN> |
1077f09a0cfd
fplot.m: Handle input functions which do not respect input data orientation (bug #48034).
Rik <rik@octave.org>
parents:
20852
diff
changeset
|
289 %! fn = @(x) [x;x]; |
1077f09a0cfd
fplot.m: Handle input functions which do not respect input data orientation (bug #48034).
Rik <rik@octave.org>
parents:
20852
diff
changeset
|
290 %! fplot (fn, [-1,1]); |