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author Daniele Nicolodi <nicolodi@science.unitn.it>
date Wed, 23 Nov 2011 19:22:13 +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>Building Statespace models (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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18 <body>
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19 <a name="top_of_page" id="top_of_page"></a>
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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 "ssm_introduction.html"><img src="b_prev.gif" border="0" align=
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30 "bottom" alt="Introduction to Statespace Models with LTPDA"></a>&nbsp;&nbsp;&nbsp;<a href=
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31 "ssm_build_description.html"><img src="b_next.gif" border="0" align=
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32 "bottom" alt="Building from scratch"></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>Building Statespace models</h1>
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37 <hr>
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38
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39 <p>
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40 <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
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41 <HTML>
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42 <HEAD>
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43 <META HTTP-EQUIV="CONTENT-TYPE" CONTENT="text/html; charset=windows-1252">
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44 <TITLE></TITLE>
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45 <META NAME="GENERATOR" CONTENT="OpenOffice.org 3.1 (Win32)">
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46 <META NAME="CREATED" CONTENT="0;0">
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47 <META NAME="CHANGEDBY" CONTENT="Adrien G">
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48 <META NAME="CHANGED" CONTENT="20090827;17393200">
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49 </HEAD>
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50 <BODY LANG="en-US" DIR="LTR">
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51 <H2>How to build a ssm object.
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52 </H2>
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53 <UL>
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54 <LI><P><FONT COLOR="#000000">The empty constructor creates an empty
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55 statespace model</FONT></P>
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56 <DIV CLASS="fragment"><PRE><FONT COLOR="#000000"><FONT FACE="Courier New, monospace"><FONT SIZE=2>&gt;&gt; </FONT></FONT></FONT>s = ssm()</PRE></DIV>
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57 </UL>
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58 <UL>
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59 <LI><P><FONT COLOR="#000000">Models can be built out of built-in
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60 models (mfiles stored in a folder), out of a description with a
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61 plist, from a repository or a xml file, but also out of a pzmodel, a
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62 rational or a miir model. Conversion out of a parFrac object is not
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63 implemented yet.</FONT></P>
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64 <DIV CLASS="fragment"><PRE><FONT COLOR="#000000"><FONT FACE="Courier New, monospace"><FONT SIZE=2>&gt;&gt; </FONT></FONT></FONT>s = ssm(&lt;pzmodel&gt;)<BR><FONT COLOR="#000000"><FONT FACE="Courier New, monospace"><FONT SIZE=2>&gt;&gt; </FONT></FONT></FONT>s = ssm(&lt;miir&gt;)<BR><FONT COLOR="#000000"><FONT FACE="Courier New, monospace"><FONT SIZE=2>&gt;&gt; </FONT></FONT></FONT>s = ssm(&lt;rational&gt;)</PRE></DIV>
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65 </UL>
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66 <UL>
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67 <LI><P><FONT COLOR="#000000">This creates a new statespace model by
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68 loading the object from disk, either out of an xml file or a .mat
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69 file. The latter is not recommended as Matlab data format poses some
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70 new retro-compatibility issues at each new release.</FONT></P>
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71 <DIV CLASS="fragment"><PRE><FONT SIZE=2><FONT FACE="Courier New, monospace"><FONT COLOR="#000000">&gt;&gt; s = ssm(</FONT><FONT COLOR="#a020f0">'a1.xml'</FONT><FONT COLOR="#000000">)<BR></FONT></FONT></FONT><FONT COLOR="#000000"><FONT FACE="Courier New, monospace"><FONT SIZE=2>&gt;&gt; s = ssm(</FONT></FONT></FONT><FONT COLOR="#a020f0"><FONT FACE="Courier New, monospace"><FONT SIZE=2>'a1.mat'</FONT></FONT></FONT><FONT COLOR="#000000"><FONT FACE="Courier New, monospace"><FONT SIZE=2>)</FONT></FONT></FONT></PRE></DIV>
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72 </UL>
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73 <UL>
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74 <LI><P><FONT COLOR="#000000">For internal use (see built-in models),
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75 a structure constructor is available. This is constructor should not
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76 be used &ndash; except inside a built-in model &ndash; as it does
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77 not increment history, making it impossible to rebuild the object.</FONT></P>
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78 <DIV CLASS="fragment"><PRE><FONT COLOR="#000000"><FONT FACE="Courier New, monospace"><FONT SIZE=2>&gt;&gt; </FONT></FONT></FONT>s = ssm(&lt;struct&gt;)</PRE></DIV>
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79 </UL>
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80 <UL>
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81 <LI><P><FONT COLOR="#000000">There are dedicated help pages on how
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82 to build a model out of a built-in object or a plist description.</FONT></P>
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83 <DIV CLASS="fragment"><PRE><FONT COLOR="#000000">&gt;&gt; system = ssm(plist(<FONT COLOR="#a020f0">'built-in'</FONT>, <FONT COLOR="#a020f0">'&lt;model name&gt;'</FONT>))<BR></FONT><FONT COLOR="#000000">&gt;&gt; system = ssm(plist(</FONT><FONT COLOR="#a020f0">'built-in'</FONT><FONT COLOR="#000000">, </FONT><FONT COLOR="#000000">&lt;model number&gt;))</FONT>
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84 &gt;&gt; system = ssm(plist(<FONT COLOR="#a020f0">'amats'</FONT>, &lt;a matrices&gt; ... ))</PRE></DIV>
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85 </UL>
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86 </BODY>
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87 </HTML>
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88 </p>
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89
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90 <br>
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91 <br>
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92 <table class="nav" summary="Navigation aid" border="0" width=
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93 "100%" cellpadding="0" cellspacing="0">
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94 <tr valign="top">
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95 <td align="left" width="20"><a href="ssm_introduction.html"><img src=
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96 "b_prev.gif" border="0" align="bottom" alt=
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97 "Introduction to Statespace Models with LTPDA"></a>&nbsp;</td>
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98
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99 <td align="left">Introduction to Statespace Models with LTPDA</td>
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100
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101 <td>&nbsp;</td>
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102
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103 <td align="right">Building from scratch</td>
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104
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105 <td align="right" width="20"><a href=
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106 "ssm_build_description.html"><img src="b_next.gif" border="0" align=
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107 "bottom" alt="Building from scratch"></a></td>
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108 </tr>
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109 </table><br>
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110
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111 <p class="copy">&copy;LTP Team</p>
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112 </body>
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113 </html>