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Daniele Nicolodi <nicolodi@science.unitn.it> |
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Mon, 05 Dec 2011 16:20:06 +0100 (2011-12-05) |
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<h1 class="title"><a name="f3-12899" id="f3-12899"></a>Constructor examples of the PZMODEL class</h1>
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<table border="0" summary="Simple list" class="simplelist_nottable_last">
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<a href="pzmodel_model.html">General information about PZMODEL objects</a>
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<td>
<a href="constructor_examples_pzmodel.html#empty">Construct empty PZMODEL object</a>
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<td>
<a href="constructor_examples_pzmodel.html#xml_file">Construct a PZMODEL object by loading the object from a file</a>
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<td>
<a href="constructor_examples_pzmodel.html#gain_poles_zeros">Construct a PZMODEL object from gain, poles and zeros</a>
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<td>
<a href="constructor_examples_pzmodel.html#exist_model">Construct a PZMODEL object from an existing model</a>
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<a href="constructor_examples_pzmodel.html#plist">Construct a PZMODEL object from a parameter list (PLIST) object</a>
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<h2 class="title"><a href="pzmodel_model.html">General information about pole/zero models</a></h2>
<h2 class="title">
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<a href="gui_pzmodel.html">For help in designing a PZMODEL object, see also the PZMODEL Helper GUI documentation</a></h2>
<hr>
<h2 class="title"><a name="empty"></a>Construct empty PZMODEL object</h2>
<p>The following example creates an empty pzmodel object</p>
<div class="fragment"><pre class="programlisting">
pzm = pzmodel()
---- pzmodel 1 ----
model: None
gain : 0
pole 001: pole(NaN)
zero 001: zero(NaN)
-------------------
</pre></div>
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<h2 class="title"><a name="xml_file"></a>Construct a PZMODEL object by loading the object from a file</h2>
<p>The following example creates a new pzmodel object by loading the pzmodel object from disk.</p>
<div class="fragment"><pre class="programlisting">
p = pzmodel(<span class="string">'pzmodel.mat'</span>)
p = pzmodel(<span class="string">'pzmodel.xml'</span>)
</pre></div>
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<hr>
<h2 class="title"><a name="gain_poles_zeros"></a>Construct a PZMODEL object from gain, poles and zeros</h2>
<p>The following code fragment creates a pole/zero model consisting of 2 poles and 2 zeros with a gain factor of 10:</p>
<div class="fragment"><pre class="programlisting">
gain = 10;
poles = [pole(1,2) pole(40)];
zeros = [zero(10,3) zero(100)];
pzm = pzmodel(gain, poles, zeros)
---- pzmodel 1 ----
model: None
gain : 10
pole 001: pole(1,2)
pole 002: pole(40)
zero 001: zero(10,3)
zero 002: zero(100)
-------------------
</pre></div>
<p>It is possible to give the model direct a name.</p>
<div class="fragment"><pre class="programlisting">
gain = 10;
poles = [pole(1,2) pole(40)];
zeros = [zero(10,3) zero(100)];
pzm = pzmodel(gain, poles, zeros, <span class="string">'my model name'</span>)
---- pzmodel 1 ----
model: <span class="string">my model name</span>
gain : 10
pole 001: pole(1,2)
pole 002: pole(40)
zero 001: zero(10,3)
zero 002: zero(100)
-------------------
</pre></div>
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<hr>
<h2 class="title"><a name="exist_model"></a>Construct a PZMODEL object from an existing model</h2>
<p>The pzmodel constructor also accepts as an input existing models in a LISO file format</p>
<div class="fragment"><pre class="programlisting">
pzm = pzmodel(<span class="string">'foo.fil'</span>)
</pre></div>
<!-- --------------- NEXT EXAMPLE --------------- -->
<hr>
<h2 class="title"><a name="plist"></a>Construct a PZMODEL object from a parameter list (PLIST) object</h2>
<p>Construct a PZMODEL from its definion.
<table border="0" summary="Simple list" class="simplelist_nottable_last" width="50%">
<tr valign="top">
<td width="25%">
<p>'gain'</p>
</td>
<td width="75%">
<p>Model gain [default: 1]</p>
</td>
</tr>
<tr valign="top">
<td width="25%">
<p>'poles'</p>
</td>
<td width="75%">
<p>Vector of pole objects [default: empty pole]</p>
</td>
</tr>
<tr valign="top">
<td width="25%">
<p>'zeros'</p>
</td>
<td width="75%">
<p>Vector of zero objects [default: empty zero]</p>
</td>
</tr>
<tr valign="top">
<td width="25%">
<p>'name'</p>
</td>
<td width="75%">
<p>Name of model [default: 'None']</p>
</td>
</tr>
</table>
</p>
<div class="fragment"><pre class="programlisting">
poles = [pole(0.1) pole(1,100)];
zeros = [zero(10,3) zero(100)];
pl = plist('name', 'my filter', 'poles', poles, 'zeros', zeros, 'gain', 10);
pzm = pzmodel(pl)
---- pzmodel 1 ----
model: my filter
gain : 10
pole 001: pole(0.1)
pole 002: pole(1,100)
zero 001: zero(10,3)
zero 002: zero(100)
-------------------
</pre></div>
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