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author Daniele Nicolodi <nicolodi@science.unitn.it>
date Mon, 05 Dec 2011 16:20:06 +0100
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1 <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
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2 "http://www.w3.org/TR/1999/REC-html401-19991224/loose.dtd">
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3
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4 <html lang="en">
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5 <head>
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6 <meta name="generator" content=
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7 "HTML Tidy for Mac OS X (vers 1st December 2004), see www.w3.org">
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8 <meta http-equiv="Content-Type" content=
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9 "text/html; charset=us-ascii">
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10
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11 <title>Collection objects (LTPDA Toolbox)</title>
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12 <link rel="stylesheet" href="docstyle.css" type="text/css">
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13 <meta name="generator" content="DocBook XSL Stylesheets V1.52.2">
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14 <meta name="description" content=
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15 "Presents an overview of the features, system requirements, and starting the toolbox.">
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16 </head>
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17
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18 <body>
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19 <a name="top_of_page" id="top_of_page"></a>
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20
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21 <p style="font-size:1px;">&nbsp;</p>
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22
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23 <table class="nav" summary="Navigation aid" border="0" width=
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24 "100%" cellpadding="0" cellspacing="0">
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25 <tr>
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26 <td valign="baseline"><b>LTPDA Toolbox</b></td><td><a href="../helptoc.html">contents</a></td>
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27
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28 <td valign="baseline" align="right"><a href=
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29 "ao_plot.html"><img src="b_prev.gif" border="0" align=
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30 "bottom" alt="Plotting Analysis Objects"></a>&nbsp;&nbsp;&nbsp;<a href=
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31 "ltpda_units.html"><img src="b_next.gif" border="0" align=
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32 "bottom" alt="Units in LTPDA"></a></td>
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33 </tr>
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34 </table>
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35
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36 <h1 class="title"><a name="f3-12899" id="f3-12899"></a>Collection objects</h1>
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37 <hr>
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38
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39 <p>
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40 <p>
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41 Collection objects serve as merely a wrapper for a cell-array of LTPDA User Objects. The point of this is to provide
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42 a way to put together user objects of different classes in to a collection which can be saved/loaded/submitted/retrieved, etc.
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43 </p>
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44 <p>
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45 You can create a <tt>collection</tt> object like:
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46 <div class="fragment"><pre>
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47 >> c = collection
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48 ---- collection 1 ----
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49 name: none
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50 num objs: 0
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51 description:
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52 UUID: a339a156-956b-4657-96ef-9ea4feef8101
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53 ----------------------
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54
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55 </pre></div>
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56 You can then add objects to the collection by doing:
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57 <div class="fragment"><pre>
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58 >> c.addObjects(ao(1))
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59 M: running ao/ao
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60 M: constructing from values
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61 M: running collection/addObjects
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62 M: running ao/char
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63 ---- collection 1 ----
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64 name: none
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65 num objs: 1
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66 01: ao | None/cdata(Ndata=[1x1])
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67 description:
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68 UUID: c1f0200f-ad98-4fd6-beae-2dcdabb33515
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69 ----------------------
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70
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71 </pre></div>
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72 or
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73 <div class="fragment"><pre>
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74 >> c.addObjects(pzmodel(1, 10, 100), mfir())
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75 M: running collection/addObjects
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76 M: running ao/char
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77 ---- collection 1 ----
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78 name: none
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79 num objs: 3
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80 01: ao | None/cdata(Ndata=[1x1])
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81 02: pzmodel | pzmodel(None)
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82 03: mfir | none(fs=, ntaps=0.00, a=[])
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83 description:
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84 UUID: e7f02380-5650-4788-b819-f7fa7ee50a7d
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85 ----------------------
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86
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87 </pre></div>
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88 </p>
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89 <p>
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90 You can then extract objects from the collection using <tt>getObjectAtIndex</tt> or get an array of all
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91 objects of a particular class using <tt>getObjectsOfClass</tt>. Objects can be removed from the collection using
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92 <tt>removeObjectAtIndex</tt>.
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93 </p>
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94 <p>
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95 Since a <tt>collection</tt> object is an LTPDA User Object, it has history tracking capabilities. That means that everytime you
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96 add or remove an object to/from the collection, a history step is added. For example, the history of our collection above looks like:
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97 <img src="images/collection_history.png" alt="Collection history" border="3">
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98 </p>
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99 </p>
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100
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101 <br>
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102 <br>
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103 <table class="nav" summary="Navigation aid" border="0" width=
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104 "100%" cellpadding="0" cellspacing="0">
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105 <tr valign="top">
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106 <td align="left" width="20"><a href="ao_plot.html"><img src=
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107 "b_prev.gif" border="0" align="bottom" alt=
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108 "Plotting Analysis Objects"></a>&nbsp;</td>
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109
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110 <td align="left">Plotting Analysis Objects</td>
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111
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112 <td>&nbsp;</td>
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113
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114 <td align="right">Units in LTPDA</td>
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115
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116 <td align="right" width="20"><a href=
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117 "ltpda_units.html"><img src="b_next.gif" border="0" align=
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118 "bottom" alt="Units in LTPDA"></a></td>
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119 </tr>
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120 </table><br>
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121
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122 <p class="copy">&copy;LTP Team</p>
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123 </body>
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124 </html>