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<b>QuantLib</b>::<a class="el" href="class_quant_lib_1_1_piecewise_constant_parameter.html">PiecewiseConstantParameter</a></div>
<h1>PiecewiseConstantParameter Class Reference</h1><!-- doxytag: class="QuantLib::PiecewiseConstantParameter" --><!-- doxytag: inherits="QuantLib::Parameter" --><code>#include <ql/ShortRateModels/parameter.hpp></code>
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Inheritance diagram for PiecewiseConstantParameter:<p><center><img src="class_quant_lib_1_1_piecewise_constant_parameter__inherit__graph.png" border="0" usemap="#_piecewise_constant_parameter__inherit__map" alt="Inheritance graph"></center>
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Piecewise-constant parameter.
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<img class="formulaInl" alt="$ a(t) = a_i if t_{i-1} \geq t < t_i $" src="form_220.png">. This kind of parameter is usually used to enhance the fitting of a model
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<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="ad3f274435bbd6fa07fb2c90f2bebd2e"></a><!-- doxytag: member="QuantLib::PiecewiseConstantParameter::PiecewiseConstantParameter" ref="ad3f274435bbd6fa07fb2c90f2bebd2e" args="(const std::vector< Time > &times)" -->
</td><td class="memItemRight" valign="bottom"><b>PiecewiseConstantParameter</b> (const std::vector< <a class="el" href="group__types.html#g14fb8fca43a68f4168654e1f9f7e22f7">Time</a> > &times)</td></tr>
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