Mercurial > hg > octave-lyh
annotate scripts/testfun/demo.m @ 14846:460a3c6d8bf1
maint: Use Octave coding convention for cuddled parenthis in function calls with empty argument lists.
Example: func() => func ()
* dynamic.txi, func.txi, oop.txi, var.txi, embedded.cc, fortdemo.cc,
funcdemo.cc, paramdemo.cc, stringdemo.cc, unwinddemo.cc, Array.cc, Array.h,
CColVector.cc, CDiagMatrix.h, CMatrix.cc, CNDArray.cc, CRowVector.cc,
CSparse.cc, CmplxGEPBAL.cc, EIG.cc, MSparse.cc, MatrixType.cc,
Sparse-op-defs.h, Sparse-perm-op-defs.h, Sparse.cc, Sparse.h,
SparseCmplxCHOL.cc, SparseCmplxCHOL.h, SparseCmplxLU.cc, SparseCmplxQR.cc,
SparseCmplxQR.h, SparseQR.cc, SparseQR.h, SparsedbleCHOL.cc, SparsedbleCHOL.h,
SparsedbleLU.cc, SparsedbleLU.h, base-lu.cc, cmd-hist.cc, dColVector.cc,
dDiagMatrix.h, dMatrix.cc, dNDArray.cc, dRowVector.cc, dSparse.cc, dbleCHOL.cc,
dbleGEPBAL.cc, dim-vector.cc, eigs-base.cc, f2c-main.c, fCColVector.cc,
fCDiagMatrix.h, fCMatrix.cc, fCNDArray.cc, fCRowVector.cc, fCmplxGEPBAL.cc,
fColVector.cc, fDiagMatrix.h, fEIG.cc, fMatrix.cc, fNDArray.cc, fRowVector.cc,
file-ops.cc, file-stat.cc, floatCHOL.cc, floatGEPBAL.cc, idx-vector.h,
lo-specfun.cc, lo-sysdep.cc, mx-inlines.cc, oct-binmap.h, oct-convn.cc,
oct-md5.cc, oct-mem.h, oct-rand.cc, oct-syscalls.cc, randgamma.c, randmtzig.c,
sparse-base-chol.cc, sparse-base-chol.h, sparse-base-lu.cc, sparse-dmsolve.cc,
tempname.c, curl.m, divergence.m, randi.m, dlmwrite.m, edit.m, getappdata.m,
what.m, getarchdir.m, install.m, installed_packages.m, repackage.m,
unload_packages.m, colorbar.m, figure.m, isosurface.m, legend.m, loglog.m,
plot.m, plot3.m, plotyy.m, polar.m, __errplot__.m, __ghostscript__.m,
__marching_cube__.m, __plt__.m, __scatter__.m, semilogx.m, semilogy.m,
trimesh.m, trisurf.m, demo.m, test.m, datetick.m, __delaunayn__.cc,
__dsearchn__.cc, __fltk_uigetfile__.cc, __glpk__.cc, __init_fltk__.cc,
__lin_interpn__.cc, __magick_read__.cc, __pchip_deriv__.cc, balance.cc,
bsxfun.cc, ccolamd.cc, cellfun.cc, chol.cc, daspk.cc, dasrt.cc, dassl.cc,
dmperm.cc, eig.cc, eigs.cc, fftw.cc, filter.cc, find.cc, kron.cc, lookup.cc,
lsode.cc, matrix_type.cc, md5sum.cc, mgorth.cc, qr.cc, quad.cc, rand.cc,
regexp.cc, symbfact.cc, tril.cc, urlwrite.cc, op-bm-bm.cc, op-cdm-cdm.cc,
op-cell.cc, op-chm.cc, op-cm-cm.cc, op-cm-scm.cc, op-cm-sm.cc, op-cs-scm.cc,
op-cs-sm.cc, op-dm-dm.cc, op-dm-scm.cc, op-dm-sm.cc, op-fcdm-fcdm.cc,
op-fcm-fcm.cc, op-fdm-fdm.cc, op-fm-fm.cc, op-int.h, op-m-m.cc, op-m-scm.cc,
op-m-sm.cc, op-pm-pm.cc, op-pm-scm.cc, op-pm-sm.cc, op-range.cc, op-s-scm.cc,
op-s-sm.cc, op-sbm-sbm.cc, op-scm-cm.cc, op-scm-cs.cc, op-scm-m.cc,
op-scm-s.cc, op-scm-scm.cc, op-scm-sm.cc, op-sm-cm.cc, op-sm-cs.cc, op-sm-m.cc,
op-sm-s.cc, op-sm-scm.cc, op-sm-sm.cc, op-str-str.cc, op-struct.cc, bitfcns.cc,
data.cc, debug.cc, dynamic-ld.cc, error.cc, gl-render.cc, graphics.cc,
graphics.in.h, load-path.cc, ls-hdf5.cc, ls-mat5.cc, ls-mat5.h,
ls-oct-ascii.cc, ls-oct-ascii.h, mex.cc, mk-errno-list, oct-map.cc, oct-obj.h,
oct-parse.yy, octave-config.in.cc, ov-base-int.cc, ov-base-mat.cc, ov-base.cc,
ov-bool-mat.cc, ov-bool-sparse.cc, ov-bool.cc, ov-cell.cc, ov-class.cc,
ov-class.h, ov-cx-mat.cc, ov-cx-sparse.cc, ov-fcn-handle.cc, ov-flt-cx-mat.cc,
ov-flt-re-mat.cc, ov-intx.h, ov-range.h, ov-re-mat.cc, ov-re-sparse.cc,
ov-str-mat.cc, ov-struct.cc, ov-usr-fcn.h, ov.h, pr-output.cc, pt-id.cc,
pt-id.h, pt-mat.cc, pt-select.cc, sparse.cc, symtab.cc, symtab.h, syscalls.cc,
toplev.cc, txt-eng-ft.cc, variables.cc, zfstream.cc, zfstream.h, Dork.m,
getStash.m, myStash.m, Gork.m, Pork.m, myStash.m, getStash.m, myStash.m,
getStash.m, myStash.m, fntests.m: Use Octave coding convention for
cuddled parenthis in function calls with empty argument lists.
| author | Rik <octave@nomad.inbox5.com> |
|---|---|
| date | Sun, 08 Jul 2012 11:28:50 -0700 |
| parents | f3d52523cde1 |
| children | 5d3a684236b0 |
| rev | line source |
|---|---|
|
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1 ## Copyright (C) 2000-2012 Paul Kienzle |
| 5589 | 2 ## |
| 7016 | 3 ## This file is part of Octave. |
| 5589 | 4 ## |
| 7016 | 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. | |
| 5589 | 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 |
| 17 ## <http://www.gnu.org/licenses/>. | |
| 5589 | 18 |
| 19 ## -*- texinfo -*- | |
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20 ## @deftypefn {Command} {} demo @var{name} |
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21 ## @deftypefnx {Command} {} demo @var{name} @var{n} |
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22 ## @deftypefnx {Function File} {} demo ("@var{name}") |
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23 ## @deftypefnx {Function File} {} demo ("@var{name}", @var{n}) |
| 5589 | 24 ## |
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25 ## Run example code block @var{n} associated with the function @var{name}. |
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26 ## If @var{n} is not specified, all examples are run. |
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27 ## |
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28 ## Examples are stored in the script file, or in a file with the same |
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29 ## name but no extension located on Octave's load path. To keep examples |
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30 ## separate from regular script code, all lines are prefixed by @code{%!}. Each |
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31 ## example must also be introduced by the keyword 'demo' flush left to the |
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32 ## prefix with no intervening spaces. The remainder of the example can |
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33 ## contain arbitrary Octave code. For example: |
| 5589 | 34 ## |
| 35 ## @example | |
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36 ## @group |
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37 ## %!demo |
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38 ## %! t = 0:0.01:2*pi; |
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39 ## %! x = sin (t); |
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40 ## %! plot (t, x); |
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41 ## %! %------------------------------------------------- |
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42 ## %! % the figure window shows one cycle of a sine wave |
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43 ## @end group |
| 5589 | 44 ## @end example |
| 45 ## | |
| 46 ## Note that the code is displayed before it is executed, so a simple | |
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47 ## comment at the end suffices for labeling what is being shown. It is |
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48 ## generally not necessary to use @code{disp} or @code{printf} within the demo. |
| 5589 | 49 ## |
| 50 ## Demos are run in a function environment with no access to external | |
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51 ## variables. This means that every demo must have separate initialization |
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52 ## code. Alternatively, all demos can be combined into a single large demo |
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53 ## with the code |
| 5589 | 54 ## |
| 55 ## @example | |
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56 ## %! input("Press <enter> to continue: ","s"); |
| 5589 | 57 ## @end example |
| 58 ## | |
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59 ## @noindent |
| 5589 | 60 ## between the sections, but this is discouraged. Other techniques |
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61 ## to avoid multiple initialization blocks include using multiple plots |
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62 ## with a new @code{figure} command between each plot, or using @code{subplot} |
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63 ## to put multiple plots in the same window. |
| 5589 | 64 ## |
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65 ## Also, because demo evaluates within a function context, you cannot |
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66 ## define new functions inside a demo. If you must have function blocks, |
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67 ## rather than just anonymous functions or inline functions, you will have to |
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68 ## use @code{eval(example("function",n))} to see them. Because eval only |
| 5589 | 69 ## evaluates one line, or one statement if the statement crosses |
| 70 ## multiple lines, you must wrap your demo in "if 1 <demo stuff> endif" | |
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71 ## with the 'if' on the same line as 'demo'. For example: |
| 5589 | 72 ## |
| 73 ## @example | |
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74 ## @group |
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75 ## %!demo if 1 |
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76 ## %! function y=f(x) |
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77 ## %! y=x; |
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78 ## %! endfunction |
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79 ## %! f(3) |
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80 ## %! endif |
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81 ## @end group |
| 5589 | 82 ## @end example |
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83 ## |
| 5642 | 84 ## @seealso{test, example} |
| 5589 | 85 ## @end deftypefn |
| 86 | |
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87 ## FIXME: modify subplot so that gnuplot_has_multiplot == 0 causes it to |
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88 ## use the current figure window but pause if not plotting in the |
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89 ## first subplot. |
| 5589 | 90 |
| 6494 | 91 function demo (name, n) |
| 5589 | 92 |
| 93 if (nargin < 1 || nargin > 2) | |
| 6046 | 94 print_usage (); |
| 5589 | 95 endif |
| 96 | |
| 97 if (nargin < 2) | |
| 98 n = 0; | |
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99 elseif (ischar (n)) |
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100 n = str2double (n); |
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101 endif |
| 5589 | 102 |
| 6494 | 103 [code, idx] = test (name, "grabdemo"); |
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104 if (isempty (idx)) |
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105 warning ("no demo available for %s", name); |
| 5589 | 106 return; |
| 6494 | 107 elseif (n >= length (idx)) |
| 108 warning ("only %d demos available for %s", length (idx) - 1, name); | |
| 5589 | 109 return; |
| 110 endif | |
| 111 | |
| 112 if (n > 0) | |
| 113 doidx = n; | |
| 114 else | |
| 6494 | 115 doidx = 1:length(idx)-1; |
| 5589 | 116 endif |
| 6494 | 117 for i = 1:length (doidx) |
| 5589 | 118 ## Pause between demos |
| 119 if (i > 1) | |
| 6494 | 120 input ("Press <enter> to continue: ", "s"); |
| 5589 | 121 endif |
| 122 | |
| 123 ## Process each demo without failing | |
| 124 try | |
| 6494 | 125 block = code(idx(doidx(i)):idx(doidx(i)+1)-1); |
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126 ## FIXME: need to check for embedded test functions, which cause |
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127 ## segfaults, until issues with subfunctions in functions are resolved. |
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128 embed_func = regexp (block, '^\s*function ', 'once', 'lineanchors'); |
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129 if (isempty (embed_func)) |
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130 ## Use an environment without variables |
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131 eval (cstrcat ("function __demo__ ()\n", block, "\nendfunction")); |
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132 ## Display the code that will be executed before executing it |
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133 printf ("%s example %d:%s\n\n", name, doidx(i), block); |
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134 __demo__; |
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135 else |
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136 error (["Functions embedded in %!demo blocks are not allowed.\n", ... |
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137 "Use the %!function/%!endfunction syntax instead to define shared functions for testing.\n"]); |
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138 endif |
| 5589 | 139 catch |
| 140 ## Let the programmer know which demo failed. | |
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141 printf ("%s example %d: failed\n%s\n", name, doidx(i), lasterr ()); |
| 5589 | 142 end_try_catch |
| 143 clear __demo__; | |
| 144 endfor | |
| 145 | |
| 146 endfunction | |
| 147 | |
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148 |
| 5589 | 149 %!demo |
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150 %! t = 0:0.01:2*pi; |
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151 %! x = sin (t); |
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152 %! plot (t, x); |
| 5589 | 153 %! %------------------------------------------------- |
| 154 %! % the figure window shows one cycle of a sine wave | |
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155 |
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156 %!error demo () |
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157 %!error demo (1, 2, 3) |
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158 |