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<b>PlotMM</b>::<a class="el" href="class_plot_m_m_1_1_double_int_map.html">DoubleIntMap</a></div>
<h1>PlotMM::DoubleIntMap Class Reference</h1><!-- doxytag: class="PlotMM::DoubleIntMap" --><a href="class_plot_m_m_1_1_double_int_map-members.html">List of all members.</a><hr><a name="_details"></a><h2>Detailed Description</h2>
Map a double interval into an integer interval.
<p>
The <a class="el" href="class_plot_m_m_1_1_double_int_map.html">DoubleIntMap</a> class maps an interval of type double into an interval of type int. It consists of two intervals D = [d1, d2] (double) and I = [i1, i2] (int), which are specified with the <a class="el" href="class_plot_m_m_1_1_double_int_map.html#_plot_m_m_1_1_double_int_mapa6">DoubleIntMap::set_dbl_range</a> and <a class="el" href="class_plot_m_m_1_1_double_int_map.html#_plot_m_m_1_1_double_int_mapa5">DoubleIntMap::set_int_range</a> members. The point d1 is mapped to the point i1, and d2 is mapped to i2. Any point inside or outside D can be mapped to a point inside or outside I using <a class="el" href="class_plot_m_m_1_1_double_int_map.html#_plot_m_m_1_1_double_int_mapa7">DoubleIntMap::transform</a> or <a class="el" href="class_plot_m_m_1_1_double_int_map.html#_plot_m_m_1_1_double_int_mapa9">DoubleIntMap::lim_transform</a> or vice versa using Plot::inv_transform. D can be scaled linearly or logarithmically, as specified with <a class="el" href="class_plot_m_m_1_1_double_int_map.html#_plot_m_m_1_1_double_int_mapa6">DoubleIntMap::set_dbl_range</a>.<p>
<b>Usage</b> <div class="fragment"><pre class="fragment"> * #include <plotmm/doubleintmap.h>
*
* DoubleIntMap map;
* int ival;
* double dval;
*
* // Assign an interval of type double with linear mapping
* map.set_dbl_range(0.0, 3.1415);
*
* // Assign an integer interval
* map.set_int_range(0,100);
*
* // obtain integer value corresponding to 1.0
* ival = map.transform(1.0);
*
* // obtain double value corresponding to 77
* dval = map.inv_transform(77);
* </pre></div>
<p>
<table border="0" cellpadding="0" cellspacing="0">
<tr><td></td></tr>
<tr><td colspan="2"><br><h2>Public Member Functions</h2></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="class_plot_m_m_1_1_double_int_map.html#_plot_m_m_1_1_double_int_mapa0">DoubleIntMap</a> ()</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="class_plot_m_m_1_1_double_int_map.html#_plot_m_m_1_1_double_int_mapa1">DoubleIntMap</a> (int i1, int i2, double d1, double d2, bool lg=false)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="class_plot_m_m_1_1_double_int_map.html#_plot_m_m_1_1_double_int_mapa2">~DoubleIntMap</a> ()</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">bool </td><td class="memItemRight" valign="bottom"><a class="el" href="class_plot_m_m_1_1_double_int_map.html#_plot_m_m_1_1_double_int_mapa3">contains</a> (double x) const </td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">bool </td><td class="memItemRight" valign="bottom"><a class="el" href="class_plot_m_m_1_1_double_int_map.html#_plot_m_m_1_1_double_int_mapa4">contains</a> (int x) const </td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="class_plot_m_m_1_1_double_int_map.html#_plot_m_m_1_1_double_int_mapa5">set_int_range</a> (int i1, int i2)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="class_plot_m_m_1_1_double_int_map.html#_plot_m_m_1_1_double_int_mapa6">set_dbl_range</a> (double d1, double d2, bool lg=false)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="class_plot_m_m_1_1_double_int_map.html#_plot_m_m_1_1_double_int_mapa7">transform</a> (double x) const </td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">double </td><td class="memItemRight" valign="bottom"><a class="el" href="class_plot_m_m_1_1_double_int_map.html#_plot_m_m_1_1_double_int_mapa8">inv_transform</a> (int i) const </td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="class_plot_m_m_1_1_double_int_map.html#_plot_m_m_1_1_double_int_mapa9">lim_transform</a> (double x) const </td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">double </td><td class="memItemRight" valign="bottom"><a class="el" href="class_plot_m_m_1_1_double_int_map.html#_plot_m_m_1_1_double_int_mapa10">x_transform</a> (double x) const </td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">double </td><td class="memItemRight" valign="bottom"><a class="el" href="class_plot_m_m_1_1_double_int_map.html#_plot_m_m_1_1_double_int_mapa11">d1</a> () const </td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">double </td><td class="memItemRight" valign="bottom"><a class="el" href="class_plot_m_m_1_1_double_int_map.html#_plot_m_m_1_1_double_int_mapa12">d2</a> () const </td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="class_plot_m_m_1_1_double_int_map.html#_plot_m_m_1_1_double_int_mapa13">i1</a> () const </td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="class_plot_m_m_1_1_double_int_map.html#_plot_m_m_1_1_double_int_mapa14">i2</a> () const </td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">bool </td><td class="memItemRight" valign="bottom"><a class="el" href="class_plot_m_m_1_1_double_int_map.html#_plot_m_m_1_1_double_int_mapa15">logarithmic</a> () const </td></tr>
<tr><td colspan="2"><br><h2>Static Public Attributes</h2></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="_plot_m_m_1_1_double_int_maps0"></a><!-- doxytag: member="PlotMM::DoubleIntMap::LogMin" ref="_plot_m_m_1_1_double_int_maps0" args="" -->
static const double </td><td class="memItemRight" valign="bottom"><b>LogMin</b> = 1.0e-150</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="_plot_m_m_1_1_double_int_maps1"></a><!-- doxytag: member="PlotMM::DoubleIntMap::LogMax" ref="_plot_m_m_1_1_double_int_maps1" args="" -->
static const double </td><td class="memItemRight" valign="bottom"><b>LogMax</b> = 1.0e150</td></tr>
</table>
<hr><h2>Constructor & Destructor Documentation</h2>
<a class="anchor" name="_plot_m_m_1_1_double_int_mapa0"></a><!-- doxytag: member="PlotMM::DoubleIntMap::DoubleIntMap" ref="_plot_m_m_1_1_double_int_mapa0" args="()" --><p>
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<td class="md" nowrap valign="top">DoubleIntMap::DoubleIntMap </td>
<td class="md" valign="top">( </td>
<td class="mdname1" valign="top" nowrap> </td>
<td class="md" valign="top"> ) </td>
<td class="md" nowrap></td>
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</td>
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<p>
Constructor.
<p>
The double and integer intervals are both set to [0,1]. </td>
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<a class="anchor" name="_plot_m_m_1_1_double_int_mapa1"></a><!-- doxytag: member="PlotMM::DoubleIntMap::DoubleIntMap" ref="_plot_m_m_1_1_double_int_mapa1" args="(int i1, int i2, double d1, double d2, bool lg=false)" --><p>
<table class="mdTable" cellpadding="2" cellspacing="0">
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<td class="md" nowrap valign="top">DoubleIntMap::DoubleIntMap </td>
<td class="md" valign="top">( </td>
<td class="md" nowrap valign="top">int </td>
<td class="mdname" nowrap> <em>i1</em>, </td>
</tr>
<tr>
<td class="md" nowrap align="right"></td>
<td class="md"></td>
<td class="md" nowrap>int </td>
<td class="mdname" nowrap> <em>i2</em>, </td>
</tr>
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<td class="md" nowrap align="right"></td>
<td class="md"></td>
<td class="md" nowrap>double </td>
<td class="mdname" nowrap> <em>d1</em>, </td>
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<td class="md" nowrap align="right"></td>
<td class="md"></td>
<td class="md" nowrap>double </td>
<td class="mdname" nowrap> <em>d2</em>, </td>
</tr>
<tr>
<td class="md" nowrap align="right"></td>
<td class="md"></td>
<td class="md" nowrap>bool </td>
<td class="mdname" nowrap> <em>logarithmic</em> = <code>false</code></td>
</tr>
<tr>
<td class="md"></td>
<td class="md">) </td>
<td class="md" colspan="2"></td>
</tr>
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</td>
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</td>
<td>
<p>
Constructor.
<p>
Constructs a <a class="el" href="class_plot_m_m_1_1_double_int_map.html">DoubleIntMap</a> instance with initial integer and double intervals<p>
<dl compact><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td valign="top"></td><td valign="top"><em>i1</em> </td><td>first border of integer interval </td></tr>
<tr><td valign="top"></td><td valign="top"><em>i2</em> </td><td>second border of integer interval </td></tr>
<tr><td valign="top"></td><td valign="top"><em>d1</em> </td><td>first border of double interval </td></tr>
<tr><td valign="top"></td><td valign="top"><em>d2</em> </td><td>second border of double interval </td></tr>
<tr><td valign="top"></td><td valign="top"><em>logarithmic</em> </td><td>logarithmic mapping, true or false.</td></tr>
</table>
</dl>
</td>
</tr>
</table>
<a class="anchor" name="_plot_m_m_1_1_double_int_mapa2"></a><!-- doxytag: member="PlotMM::DoubleIntMap::~DoubleIntMap" ref="_plot_m_m_1_1_double_int_mapa2" args="()" --><p>
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<td class="md" nowrap valign="top">DoubleIntMap::~DoubleIntMap </td>
<td class="md" valign="top">( </td>
<td class="mdname1" valign="top" nowrap> </td>
<td class="md" valign="top"> ) </td>
<td class="md" nowrap></td>
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</td>
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</td>
<td>
<p>
Destructor.
<p>
</td>
</tr>
</table>
<hr><h2>Member Function Documentation</h2>
<a class="anchor" name="_plot_m_m_1_1_double_int_mapa4"></a><!-- doxytag: member="PlotMM::DoubleIntMap::contains" ref="_plot_m_m_1_1_double_int_mapa4" args="(int x) const " --><p>
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<td class="md" nowrap valign="top">bool DoubleIntMap::contains </td>
<td class="md" valign="top">( </td>
<td class="md" nowrap valign="top">int </td>
<td class="mdname1" valign="top" nowrap> <em>x</em> </td>
<td class="md" valign="top"> ) </td>
<td class="md" nowrap> const</td>
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<p>
<dl compact><dt><b>Returns:</b></dt><dd>true if a value x lies inside or at the border of the map's integer range </dd></dl>
<dl compact><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td valign="top"></td><td valign="top"><em>x</em> </td><td>value</td></tr>
</table>
</dl>
</td>
</tr>
</table>
<a class="anchor" name="_plot_m_m_1_1_double_int_mapa3"></a><!-- doxytag: member="PlotMM::DoubleIntMap::contains" ref="_plot_m_m_1_1_double_int_mapa3" args="(double x) const " --><p>
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<td class="md" nowrap valign="top">bool DoubleIntMap::contains </td>
<td class="md" valign="top">( </td>
<td class="md" nowrap valign="top">double </td>
<td class="mdname1" valign="top" nowrap> <em>x</em> </td>
<td class="md" valign="top"> ) </td>
<td class="md" nowrap> const</td>
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</td>
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<p>
<dl compact><dt><b>Returns:</b></dt><dd>true if a value x lies inside or at the border of the map's double range. </dd></dl>
<dl compact><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td valign="top"></td><td valign="top"><em>x</em> </td><td>value</td></tr>
</table>
</dl>
</td>
</tr>
</table>
<a class="anchor" name="_plot_m_m_1_1_double_int_mapa11"></a><!-- doxytag: member="PlotMM::DoubleIntMap::d1" ref="_plot_m_m_1_1_double_int_mapa11" args="() const " --><p>
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<td class="md" nowrap valign="top">double PlotMM::DoubleIntMap::d1 </td>
<td class="md" valign="top">( </td>
<td class="mdname1" valign="top" nowrap> </td>
<td class="md" valign="top"> ) </td>
<td class="md" nowrap> const</td>
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<table cellspacing="5" cellpadding="0" border="0">
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</td>
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<p>
<dl compact><dt><b>Returns:</b></dt><dd>the first border of the double interval</dd></dl>
</td>
</tr>
</table>
<a class="anchor" name="_plot_m_m_1_1_double_int_mapa12"></a><!-- doxytag: member="PlotMM::DoubleIntMap::d2" ref="_plot_m_m_1_1_double_int_mapa12" args="() const " --><p>
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<td class="md" nowrap valign="top">double PlotMM::DoubleIntMap::d2 </td>
<td class="md" valign="top">( </td>
<td class="mdname1" valign="top" nowrap> </td>
<td class="md" valign="top"> ) </td>
<td class="md" nowrap> const</td>
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</td>
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<p>
<dl compact><dt><b>Returns:</b></dt><dd>the second border of the double interval</dd></dl>
</td>
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<a class="anchor" name="_plot_m_m_1_1_double_int_mapa13"></a><!-- doxytag: member="PlotMM::DoubleIntMap::i1" ref="_plot_m_m_1_1_double_int_mapa13" args="() const " --><p>
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<td class="md" nowrap valign="top">int PlotMM::DoubleIntMap::i1 </td>
<td class="md" valign="top">( </td>
<td class="mdname1" valign="top" nowrap> </td>
<td class="md" valign="top"> ) </td>
<td class="md" nowrap> const</td>
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<table cellspacing="5" cellpadding="0" border="0">
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<td>
</td>
<td>
<p>
<dl compact><dt><b>Returns:</b></dt><dd>the second border of the integer interval</dd></dl>
</td>
</tr>
</table>
<a class="anchor" name="_plot_m_m_1_1_double_int_mapa14"></a><!-- doxytag: member="PlotMM::DoubleIntMap::i2" ref="_plot_m_m_1_1_double_int_mapa14" args="() const " --><p>
<table class="mdTable" cellpadding="2" cellspacing="0">
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<td class="md" nowrap valign="top">int PlotMM::DoubleIntMap::i2 </td>
<td class="md" valign="top">( </td>
<td class="mdname1" valign="top" nowrap> </td>
<td class="md" valign="top"> ) </td>
<td class="md" nowrap> const</td>
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</td>
<td>
<p>
<dl compact><dt><b>Returns:</b></dt><dd>the second border of the integer interval</dd></dl>
</td>
</tr>
</table>
<a class="anchor" name="_plot_m_m_1_1_double_int_mapa8"></a><!-- doxytag: member="PlotMM::DoubleIntMap::inv_transform" ref="_plot_m_m_1_1_double_int_mapa8" args="(int i) const " --><p>
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<td class="md" nowrap valign="top">double DoubleIntMap::inv_transform </td>
<td class="md" valign="top">( </td>
<td class="md" nowrap valign="top">int </td>
<td class="mdname1" valign="top" nowrap> <em>y</em> </td>
<td class="md" valign="top"> ) </td>
<td class="md" nowrap> const</td>
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</td>
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<table cellspacing="5" cellpadding="0" border="0">
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</td>
<td>
<p>
Transform an integer value into a double value.
<p>
<dl compact><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td valign="top"></td><td valign="top"><em>y</em> </td><td>integer value to be transformed </td></tr>
</table>
</dl>
<dl compact><dt><b>Returns:</b></dt><dd><dl>
<dt>linear mapping:</dt>
<dd>d1 + (d2 - d1) / (i2 - i1) * (y - i1) </dd>
<dt>logarithmic mapping:</dt>
<dd>d1 + (d2 - d1) / log(i2 / i1) * log(y / i1) </dd>
</dl>
</dd></dl>
</td>
</tr>
</table>
<a class="anchor" name="_plot_m_m_1_1_double_int_mapa9"></a><!-- doxytag: member="PlotMM::DoubleIntMap::lim_transform" ref="_plot_m_m_1_1_double_int_mapa9" args="(double x) const " --><p>
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<td class="md" nowrap valign="top">int DoubleIntMap::lim_transform </td>
<td class="md" valign="top">( </td>
<td class="md" nowrap valign="top">double </td>
<td class="mdname1" valign="top" nowrap> <em>x</em> </td>
<td class="md" valign="top"> ) </td>
<td class="md" nowrap> const</td>
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</td>
<td>
<p>
Transform and limit.
<p>
The function is similar to <a class="el" href="class_plot_m_m_1_1_double_int_map.html#_plot_m_m_1_1_double_int_mapa7">DoubleIntMap::transform</a>, but limits the input value to the nearest border of the map's double interval if it lies outside that interval.<p>
<dl compact><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td valign="top"></td><td valign="top"><em>x</em> </td><td>value to be transformed </td></tr>
</table>
</dl>
<dl compact><dt><b>Returns:</b></dt><dd>transformed value</dd></dl>
</td>
</tr>
</table>
<a class="anchor" name="_plot_m_m_1_1_double_int_mapa15"></a><!-- doxytag: member="PlotMM::DoubleIntMap::logarithmic" ref="_plot_m_m_1_1_double_int_mapa15" args="() const " --><p>
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<td class="md" nowrap valign="top">bool PlotMM::DoubleIntMap::logarithmic </td>
<td class="md" valign="top">( </td>
<td class="mdname1" valign="top" nowrap> </td>
<td class="md" valign="top"> ) </td>
<td class="md" nowrap> const</td>
</tr>
</table>
</td>
</tr>
</table>
<table cellspacing="5" cellpadding="0" border="0">
<tr>
<td>
</td>
<td>
<p>
<dl compact><dt><b>Returns:</b></dt><dd>TRUE if the double interval is scaled logarithmically</dd></dl>
</td>
</tr>
</table>
<a class="anchor" name="_plot_m_m_1_1_double_int_mapa6"></a><!-- doxytag: member="PlotMM::DoubleIntMap::set_dbl_range" ref="_plot_m_m_1_1_double_int_mapa6" args="(double d1, double d2, bool lg=false)" --><p>
<table class="mdTable" cellpadding="2" cellspacing="0">
<tr>
<td class="mdRow">
<table cellpadding="0" cellspacing="0" border="0">
<tr>
<td class="md" nowrap valign="top">void DoubleIntMap::set_dbl_range </td>
<td class="md" valign="top">( </td>
<td class="md" nowrap valign="top">double </td>
<td class="mdname" nowrap> <em>d1</em>, </td>
</tr>
<tr>
<td class="md" nowrap align="right"></td>
<td class="md"></td>
<td class="md" nowrap>double </td>
<td class="mdname" nowrap> <em>d2</em>, </td>
</tr>
<tr>
<td class="md" nowrap align="right"></td>
<td class="md"></td>
<td class="md" nowrap>bool </td>
<td class="mdname" nowrap> <em>lg</em> = <code>false</code></td>
</tr>
<tr>
<td class="md"></td>
<td class="md">) </td>
<td class="md" colspan="2"></td>
</tr>
</table>
</td>
</tr>
</table>
<table cellspacing="5" cellpadding="0" border="0">
<tr>
<td>
</td>
<td>
<p>
Specify the borders of the double interval.
<p>
<dl compact><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td valign="top"></td><td valign="top"><em>d1</em> </td><td>first border </td></tr>
<tr><td valign="top"></td><td valign="top"><em>d2</em> </td><td>second border </td></tr>
<tr><td valign="top"></td><td valign="top"><em>lg</em> </td><td>logarithmic (true) or linear (false) scaling</td></tr>
</table>
</dl>
</td>
</tr>
</table>
<a class="anchor" name="_plot_m_m_1_1_double_int_mapa5"></a><!-- doxytag: member="PlotMM::DoubleIntMap::set_int_range" ref="_plot_m_m_1_1_double_int_mapa5" args="(int i1, int i2)" --><p>
<table class="mdTable" cellpadding="2" cellspacing="0">
<tr>
<td class="mdRow">
<table cellpadding="0" cellspacing="0" border="0">
<tr>
<td class="md" nowrap valign="top">void DoubleIntMap::set_int_range </td>
<td class="md" valign="top">( </td>
<td class="md" nowrap valign="top">int </td>
<td class="mdname" nowrap> <em>i1</em>, </td>
</tr>
<tr>
<td class="md" nowrap align="right"></td>
<td class="md"></td>
<td class="md" nowrap>int </td>
<td class="mdname" nowrap> <em>i2</em></td>
</tr>
<tr>
<td class="md"></td>
<td class="md">) </td>
<td class="md" colspan="2"></td>
</tr>
</table>
</td>
</tr>
</table>
<table cellspacing="5" cellpadding="0" border="0">
<tr>
<td>
</td>
<td>
<p>
Specify the borders of the integer interval.
<p>
<dl compact><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td valign="top"></td><td valign="top"><em>i1</em> </td><td>first border </td></tr>
<tr><td valign="top"></td><td valign="top"><em>i2</em> </td><td>second border</td></tr>
</table>
</dl>
</td>
</tr>
</table>
<a class="anchor" name="_plot_m_m_1_1_double_int_mapa7"></a><!-- doxytag: member="PlotMM::DoubleIntMap::transform" ref="_plot_m_m_1_1_double_int_mapa7" args="(double x) const " --><p>
<table class="mdTable" cellpadding="2" cellspacing="0">
<tr>
<td class="mdRow">
<table cellpadding="0" cellspacing="0" border="0">
<tr>
<td class="md" nowrap valign="top">int PlotMM::DoubleIntMap::transform </td>
<td class="md" valign="top">( </td>
<td class="md" nowrap valign="top">double </td>
<td class="mdname1" valign="top" nowrap> <em>x</em> </td>
<td class="md" valign="top"> ) </td>
<td class="md" nowrap> const</td>
</tr>
</table>
</td>
</tr>
</table>
<table cellspacing="5" cellpadding="0" border="0">
<tr>
<td>
</td>
<td>
<p>
Transform a point in double interval into an point in the integer interval<p>
<dl compact><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td valign="top"></td><td valign="top"><em>x</em> </td><td>value </td></tr>
</table>
</dl>
<dl compact><dt><b>Returns:</b></dt><dd><dl>
<dt>linear mapping: </dt>
<dd>rint(i1 + (i2 - i1) / (d2 - d1) * (x - d1)) </dd>
<dt>logarithmic mapping: </dt>
<dd>rint(i1 + (i2 - i1) / log(d2 / d1) * log(x / d1)) </dd>
</dl>
</dd></dl>
<dl compact><dt><b>Warning:</b></dt><dd>The specified point is allowed to lie outside the intervals. If you want to limit the returned value, use <a class="el" href="class_plot_m_m_1_1_double_int_map.html#_plot_m_m_1_1_double_int_mapa9">DoubleIntMap::lim_transform</a>.</dd></dl>
</td>
</tr>
</table>
<a class="anchor" name="_plot_m_m_1_1_double_int_mapa10"></a><!-- doxytag: member="PlotMM::DoubleIntMap::x_transform" ref="_plot_m_m_1_1_double_int_mapa10" args="(double x) const " --><p>
<table class="mdTable" cellpadding="2" cellspacing="0">
<tr>
<td class="mdRow">
<table cellpadding="0" cellspacing="0" border="0">
<tr>
<td class="md" nowrap valign="top">double DoubleIntMap::x_transform </td>
<td class="md" valign="top">( </td>
<td class="md" nowrap valign="top">double </td>
<td class="mdname1" valign="top" nowrap> <em>x</em> </td>
<td class="md" valign="top"> ) </td>
<td class="md" nowrap> const</td>
</tr>
</table>
</td>
</tr>
</table>
<table cellspacing="5" cellpadding="0" border="0">
<tr>
<td>
</td>
<td>
<p>
Exact transformation.
<p>
This function is similar to <a class="el" href="class_plot_m_m_1_1_double_int_map.html#_plot_m_m_1_1_double_int_mapa7">DoubleIntMap::transform</a>, but makes the integer interval appear to be double. <dl compact><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td valign="top"></td><td valign="top"><em>x</em> </td><td>value to be transformed </td></tr>
</table>
</dl>
<dl compact><dt><b>Returns:</b></dt><dd><dl>
<dt>linear mapping:</dt>
<dd>i1 + (i2 - i1) / (d2 - d1) * (x - d1) </dd>
<dt>logarithmic mapping:</dt>
<dd>i1 + (i2 - i1) / log(d2 / d1) * log(x / d1) </dd>
</dl>
</dd></dl>
</td>
</tr>
</table>
<hr size="1"><address style="align: right;"><small>Generated on Thu Nov 10 15:26:22 2005 for PlotMM by
<a href="http://www.doxygen.org/index.html">
<img src="doxygen.png" alt="doxygen" align="middle" border="0"></a> 1.4.4 </small></address>
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