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annotate m-toolbox/html_help/help/ug/rational_content.html @ 40:977eb37f31cb database-connection-manager

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User friendlier errors from utils.mysql.connect
author Daniele Nicolodi <nicolodi@science.unitn.it>
date Mon, 05 Dec 2011 18:04:03 +0100
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1
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2 <p>
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3 Transfer functions can be expressed as a quocient of polynomials as in the following expression
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4 </p>
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5 <br>
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6 <div align="center">
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7 <img src="images/rational_tf_eqn.png" alt="Pole/zero model TF" border="3">
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8 </div>
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9 <br>
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10 <p>
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11 The constructor can be used in different ways
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12 </p>
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13 <h2>From coefficients</a></h2>
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14 <p>
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15 The standard way is to input the coefficients of your filter. The constructor
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16 accepts as a optional properties the name
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17 </p>
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18 <br>
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19 <div class="fragment"><pre>
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20 >> rat = rational([1 3 5 7],[5 10 0.01],'filter_name')
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21 ---- rational 1 ----
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22 model: filter_name
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23 num: [1 3 5 7]
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24 den: [5 10 0.01]
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25 iunits: []
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26 ounits: []
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27 --------------------
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28 </pre></div>
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29 <br>
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30 <h2>From partial XML file</a></h2>
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31 You can input a XML file containing a transfer function model into the constructor
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32 <br>
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33 <div class="fragment"><pre>
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34 >> rat = rational('datafile.xml')
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35 </pre></div>
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36 <br>
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37 <h2>From mat file</a></h2>
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38 You can input a mat file containing a transfer function model into the constructor
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39 <br>
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40 <div class="fragment"><pre>
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41 >> rat = rational('datafile.mat')
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42 </pre></div>
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43 <br>
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44 <h2>From plist</a></h2>
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45 All the properties of the filter can be specified in a plist and then passed to the constructor:
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46 <br>
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47 <div class="fragment"><pre>
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48 >> pl = plist('iunits','m','ounits','V','num',[1 3 10],'den',[4 6],...
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49 'name','filter_mame');
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50 >> par = parfrac(pl)
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51 ---- rational 1 ----
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52 model: filter_mame
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53 num: [1 3 10]
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54 den: [4 6]
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55 iunits: [m]
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56 ounits: [V]
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57 --------------------
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58 </pre></div>
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59 <br>
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60 <h2>From repository</a></h2>
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61 Rational transfer function can be obtained from the <a href="repo.html"> repository </a> with the following syntax.
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62 <br>
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63 <div class="fragment"><pre>
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64 >> rat = rational('Hostname','localhost','Database','ltpda',...
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65 'ID',[],'CID',[],'Binary',yes)
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66 </pre></div>
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67 <br>