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annotate m-toolbox/html_help/help/ug/builtin_models_ao_content.html @ 39:11e3ed9d2115 database-connection-manager

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Implement databases listing in database connection dialog
author Daniele Nicolodi <nicolodi@science.unitn.it>
date Mon, 05 Dec 2011 16:20:06 +0100
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1 <p>
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2 <ul>
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3 <li><a href="#intro">Introduction</a></li>
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4 <li><a href="#available">Available models</a></li>
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5 <li><a href="#new">Adding new models</a></li>
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6 </ul>
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7 </p>
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8 <h2><a name="intro">Introduction</a></h2>
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9 <p>
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10 Built-in Analysis Object models provide a convenient way to add parametric
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11 contructors to the AO class. This is best explained with an example.
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12 </p>
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13 <p>
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14 One of the supplied built-in models is called 'whitenoise'. To see how to
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15 build this model, do
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16 </p>
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17 <div class="fragment"><pre>
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18 >> help ao_model_whitenoise
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19 </pre></div>
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20 <p>
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21 All AO model files are called <tt>ao_model_&lt;model_name&gt;</tt>.
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22 </p>
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23 <p>
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24 In this case, the help shows:
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25 </p>
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26 <div class="fragment"><pre>
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27 AO_MODEL_WHITENOISE constructs a known white-noise time-series
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28 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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29
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30 DESCRIPTION: AO_MODEL_WHITENOISE constructs a known white-noise time-series.
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31
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32 CALL: a = ao(plist('built-in', 'whitenoise'), pl);
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33
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34 INPUTS:
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35 pl - a parameter list of additional parameters (see below)
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36
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37 PARAMETERS:
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38 'sigma' - standard deviation of the noise. [default: 1]
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39 'nsecs' - number of seconds [s] of data. [default: 1]
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40 'fs' - sample rate [Hz] for the white noise. [default: 10]
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41
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42
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43 VERSION: $Id: builtin_models_ao_content.html,v 1.3 2011/04/04 10:39:35 hewitson Exp $
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44
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45 HISTORY: 29-10-08 M Hewitson
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46 Creation
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47
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48 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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49 </pre></div>
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50 <p>
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51 To build this model, use the following constructor:
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52 </p>
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53 <div class="fragment"><pre>
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54 a = ao(plist(<span class="string">'built-in'</span>, <span class="string">'whitenoise'</span>, <span class="string">'sigma'</span>, 2, <span class="string">'nsecs'</span>, 100, <span class="string">'fs'</span>, 10))
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55 ----------- ao 01: WN -----------
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56
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57 name: WN
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58 description:
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59 data: (0,0.260207192213954) (0.1,-1.01369469442225) (0.2,-2.1763634062959) (0.3,1.00632778971068) (0.4,0.523897003913847) ...
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60 -------- tsdata 01 ------------
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61
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62 fs: 10
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63 x: [1000 1], double
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64 y: [1000 1], double
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65 xunits: [s]
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66 yunits: [V]
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67 nsecs: 100
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68 t0: 1970-01-01 00:00:00.000
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69 -------------------------------
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70
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71 hist: ao / ao / $Id: builtin_models_ao_content.html,v 1.3 2011/04/04 10:39:35 hewitson Exp $-->$Id: builtin_models_ao_content.html,v 1.3 2011/04/04 10:39:35 hewitson Exp $
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72 mfilename:
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73 mdlfilename:
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74 ---------------------------------
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75 </pre></div>
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76 <p>
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77 The special thing about this model, is that it always generates noise from the same seed, thus providing a reproducible data series.
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78 </p>
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79
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80 <h2><a name="available">Available models</a></h2>
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81
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82 <p>
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83 To see a list of the currently available built-in models, you can use the <tt>ao</tt> class static
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84 method, <tt>getBuiltInModels</tt>:
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85 </p>
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86 <div class="fragment"><pre>
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87 >> ao.getBuiltInModels
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88 </pre></div>
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89 <p>
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90 This returns a cell-array with two columns: the first columns contains the model names; the second column descriptions of the models.
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91 </p>
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92 <p>
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93 You can also do
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94 </p>
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95 <div class="fragment"><pre>
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96 >> ao(plist(<span class="string">'built-in'</span>, <span class="string">''</span>))
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97 </pre></div>
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98
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99 <h2><a name="new">Adding new models</a></h2>
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100
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101 <p>
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102 The available AO models are determined by looking through a set of directories for all M-files with names like
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103 <tt>ao_model_&lt;model_name&gt;</tt>. The directories to be searched depend on the installed extension modules. For more details, see
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104 the section on <a href="extensions_intro.html">LTPDA Extension Modules</a>.
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105 </p>
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106 <p>
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107 It is recommended to use the above 'whitenoise' model as an example when building your own models.
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108 </p>
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109 <p>
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110 To inspect the code for this model, just edit it:
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111 </p>
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112 <div class="fragment"><pre>
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113 >> edit ao_model_whitenoise
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114 </pre></div>
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115