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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"><html><head><meta http-equiv="Content-Type" content="text/html;charset=iso-8859-1"><title>Qwt User's Guide: QwtScaleMap Class Reference</title><link href="doxygen.css" rel="stylesheet" type="text/css"><link href="tabs.css" rel="stylesheet" type="text/css"></head><body><!-- Generated by Doxygen 1.4.6 --><div class="tabs"> <ul> <li><a href="index.html"><span>Main Page</span></a></li> <li id="current"><a href="classes.html"><span>Classes</span></a></li> <li><a href="files.html"><span>Files</span></a></li> <li><a href="pages.html"><span>Related Pages</span></a></li> </ul></div><div class="tabs"> <ul> <li><a href="classes.html"><span>Alphabetical List</span></a></li> <li><a href="annotated.html"><span>Class List</span></a></li> <li><a href="hierarchy.html"><span>Class Hierarchy</span></a></li> <li><a href="functions.html"><span>Class Members</span></a></li> </ul></div><h1>QwtScaleMap Class Reference</h1><!-- doxytag: class="QwtScaleMap" -->Collaboration diagram for QwtScaleMap:<p><center><img src="class_qwt_scale_map__coll__graph.png" border="0" usemap="#_qwt_scale_map__coll__map" alt="Collaboration graph"></center><map name="_qwt_scale_map__coll__map"><area href="class_qwt_scale_transformation.html" shape="rect" coords="7,8,175,32" alt=""></map><center><font size="2">[<a href="graph_legend.html">legend</a>]</font></center><a href="class_qwt_scale_map-members.html">List of all members.</a><hr><a name="_details"></a><h2>Detailed Description</h2>A scale map. <p><a class="el" href="class_qwt_scale_map.html">QwtScaleMap</a> offers transformations from a scale into a paint interval and vice versa. <p><p>Definition at line <a class="el" href="qwt__scale__map_8h-source.html#l00055">55</a> of file <a class="el" href="qwt__scale__map_8h-source.html">qwt_scale_map.h</a>.<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_qwt_scale_map.html#9576a2e19c0be1d036fee344ab68f542">QwtScaleMap</a> ()</td></tr><tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="579bc766106d98edd7153e62ea77a19b"></a><!-- doxytag: member="QwtScaleMap::QwtScaleMap" ref="579bc766106d98edd7153e62ea77a19b" args="(const QwtScaleMap &)" --> </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_scale_map.html#579bc766106d98edd7153e62ea77a19b">QwtScaleMap</a> (const <a class="el" href="class_qwt_scale_map.html">QwtScaleMap</a> &)</td></tr><tr><td class="memItemLeft" nowrap align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_scale_map.html#ecafd09423984a5e0ffa935d1b45110c">~QwtScaleMap</a> ()</td></tr><tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="3f55ef14f8874e626380fcf92b096791"></a><!-- doxytag: member="QwtScaleMap::operator=" ref="3f55ef14f8874e626380fcf92b096791" args="(const QwtScaleMap &)" --><a class="el" href="class_qwt_scale_map.html">QwtScaleMap</a> & </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_scale_map.html#3f55ef14f8874e626380fcf92b096791">operator=</a> (const <a class="el" href="class_qwt_scale_map.html">QwtScaleMap</a> &)</td></tr><tr><td class="memItemLeft" nowrap align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_scale_map.html#37edc7ef45ce0958927f17ca96f91dde">setTransformation</a> (<a class="el" href="class_qwt_scale_transformation.html">QwtScaleTransformation</a> *)</td></tr><tr><td class="memItemLeft" nowrap align="right" valign="top">const <a class="el" href="class_qwt_scale_transformation.html">QwtScaleTransformation</a> * </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_scale_map.html#67bd65d38340ccf2c7e7623cf9bbc0e5">transformation</a> () const </td></tr><tr><td class="memItemLeft" nowrap align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_scale_map.html#a9a63a0b2e4ff81b1df23d9f968cd5b8">setPaintInterval</a> (int p1, int p2)</td></tr><tr><td class="memItemLeft" nowrap align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_scale_map.html#1679ba72903986ff546c4c197e4680c0">setPaintXInterval</a> (double p1, double p2)</td></tr><tr><td class="memItemLeft" nowrap align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_scale_map.html#aa33bc8e1aed7aa17d345053194e7094">setScaleInterval</a> (double s1, double s2)</td></tr><tr><td class="memItemLeft" nowrap align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_scale_map.html#1ddda39f41e137560e625a8c66c1d2e1">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_qwt_scale_map.html#0df4d78da09fa88d1063554542c7fb03">invTransform</a> (double i) const </td></tr><tr><td class="memItemLeft" nowrap align="right" valign="top">double </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_scale_map.html#053cad00dd463f45c7e1591c9f2d8296">xTransform</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_qwt_scale_map.html#c1ca2f9b4643d27fde693cc98bca0cd7">p1</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_qwt_scale_map.html#cf404215292b10bd46b1089d2452b8e9">p2</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_qwt_scale_map.html#38b6a7040cd15a427f7631afa20cbad8">s1</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_qwt_scale_map.html#644fe199eecf30fcd1803be554cd21f7">s2</a> () const </td></tr><tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="f364d4fa10db6f5dbc93d6ce763e603f"></a><!-- doxytag: member="QwtScaleMap::pDist" ref="f364d4fa10db6f5dbc93d6ce763e603f" args="() const " -->double </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_scale_map.html#f364d4fa10db6f5dbc93d6ce763e603f">pDist</a> () const </td></tr><tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="df621246cfa7313280a35a44063972f3"></a><!-- doxytag: member="QwtScaleMap::sDist" ref="df621246cfa7313280a35a44063972f3" args="() const " -->double </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_scale_map.html#df621246cfa7313280a35a44063972f3">sDist</a> () const </td></tr><tr><td colspan="2"><br><h2>Public Attributes</h2></td></tr><tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="dacf5fdb36940d39929993083f6cb64b"></a><!-- doxytag: member="QwtScaleMap::LogMin" ref="dacf5fdb36940d39929993083f6cb64b" args="" -->QT_STATIC_CONST double </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_scale_map.html#dacf5fdb36940d39929993083f6cb64b">LogMin</a> = 1.0e-150</td></tr><tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="0f06d4698bcb8af2200e37609b4b88c4"></a><!-- doxytag: member="QwtScaleMap::LogMax" ref="0f06d4698bcb8af2200e37609b4b88c4" args="" -->QT_STATIC_CONST double </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_scale_map.html#0f06d4698bcb8af2200e37609b4b88c4">LogMax</a> = 1.0e150</td></tr></table><hr><h2>Constructor & Destructor Documentation</h2><a class="anchor" name="9576a2e19c0be1d036fee344ab68f542"></a><!-- doxytag: member="QwtScaleMap::QwtScaleMap" ref="9576a2e19c0be1d036fee344ab68f542" args="()" --><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">QwtScaleMap::QwtScaleMap </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> </tr> </table> </td> </tr></table><table cellspacing="5" cellpadding="0" border="0"> <tr> <td> </td> <td><p>Constructor. <p>The scale and paint device intervals are both set to [0,1]. <p>Definition at line <a class="el" href="qwt__scale__map_8cpp-source.html#l00084">84</a> of file <a class="el" href="qwt__scale__map_8cpp-source.html">qwt_scale_map.cpp</a>. </td> </tr></table><a class="anchor" name="ecafd09423984a5e0ffa935d1b45110c"></a><!-- doxytag: member="QwtScaleMap::~QwtScaleMap" ref="ecafd09423984a5e0ffa935d1b45110c" args="()" --><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">QwtScaleMap::~QwtScaleMap </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> </tr> </table> </td> </tr></table><table cellspacing="5" cellpadding="0" border="0"> <tr> <td> </td> <td><p>Destructor <p>Definition at line <a class="el" href="qwt__scale__map_8cpp-source.html#l00108">108</a> of file <a class="el" href="qwt__scale__map_8cpp-source.html">qwt_scale_map.cpp</a>. </td> </tr></table><hr><h2>Member Function Documentation</h2><a class="anchor" name="0df4d78da09fa88d1063554542c7fb03"></a><!-- doxytag: member="QwtScaleMap::invTransform" ref="0df4d78da09fa88d1063554542c7fb03" args="(double i) 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 QwtScaleMap::invTransform </td> <td class="md" valign="top">( </td> <td class="md" nowrap valign="top">double </td> <td class="mdname1" valign="top" nowrap> <em>i</em> </td> <td class="md" valign="top"> ) </td> <td class="md" nowrap> const<code> [inline]</code></td> </tr> </table> </td> </tr></table><table cellspacing="5" cellpadding="0" border="0"> <tr> <td> </td> <td><p>Transform an paint device value into a value in the interval of the scale. <p><p>Definition at line <a class="el" href="qwt__scale__map_8h-source.html#l00163">163</a> of file <a class="el" href="qwt__scale__map_8h-source.html">qwt_scale_map.h</a>.<p>References <a class="el" href="qwt__scale__map_8cpp-source.html#l00070">QwtScaleTransformation::invXForm()</a>.<p>Referenced by <a class="el" href="qwt__painter_8cpp-source.html#l00637">QwtPainter::drawColorBar()</a>, <a class="el" href="qwt__plot__picker_8cpp-source.html#l00332">QwtPlotPicker::invTransform()</a>, and <a class="el" href="qwt__plot__item_8cpp-source.html#l00526">QwtPlotItem::invTransform()</a>. </td> </tr></table><a class="anchor" name="c1ca2f9b4643d27fde693cc98bca0cd7"></a><!-- doxytag: member="QwtScaleMap::p1" ref="c1ca2f9b4643d27fde693cc98bca0cd7" args="() 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 QwtScaleMap::p1 </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<code> [inline]</code></td> </tr> </table> </td> </tr></table><table 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