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bool&nbsp;</td><td class="memItemRight" valign="bottom"><b>GetXYZLine</b> (const char *buf, const char *pattern, const char *format, int components, double *x, double *y, double *z)</td></tr>

<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="f587252de32e4b39777888983d170452"></a><!-- doxytag: member="vtElevationGrid::_AllocateArray" ref="f587252de32e4b39777888983d170452" args="()" -->
bool&nbsp;</td><td class="memItemRight" valign="bottom"><b>_AllocateArray</b> ()</td></tr>

<tr><td colspan="2"><br><h2>Protected Attributes</h2></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="734049127f060bb18bb8b9457f9e1f6f"></a><!-- doxytag: member="vtElevationGrid::m_bFloatMode" ref="734049127f060bb18bb8b9457f9e1f6f" args="" -->
bool&nbsp;</td><td class="memItemRight" valign="bottom"><b>m_bFloatMode</b></td></tr>

<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="5c81694038fd96dd80b83c8246680b3e"></a><!-- doxytag: member="vtElevationGrid::m_pData" ref="5c81694038fd96dd80b83c8246680b3e" args="" -->
short *&nbsp;</td><td class="memItemRight" valign="bottom"><b>m_pData</b></td></tr>

<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="b8080fcf8afe35cc4486effbbce1e506"></a><!-- doxytag: member="vtElevationGrid::m_pFData" ref="b8080fcf8afe35cc4486effbbce1e506" args="" -->
float *&nbsp;</td><td class="memItemRight" valign="bottom"><b>m_pFData</b></td></tr>

<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="12b585ad8f63f5cc8d6e4ebfb86c1805"></a><!-- doxytag: member="vtElevationGrid::m_fVMeters" ref="12b585ad8f63f5cc8d6e4ebfb86c1805" args="" -->
float&nbsp;</td><td class="memItemRight" valign="bottom"><b>m_fVMeters</b></td></tr>

<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="62957d7eeedda1ab0e4600fa6ecb2434"></a><!-- doxytag: member="vtElevationGrid::m_fVerticalScale" ref="62957d7eeedda1ab0e4600fa6ecb2434" args="" -->
float&nbsp;</td><td class="memItemRight" valign="bottom"><b>m_fVerticalScale</b></td></tr>

<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="765f4955f420cb3f725b01d25f5e5787"></a><!-- doxytag: member="vtElevationGrid::m_Corners" ref="765f4955f420cb3f725b01d25f5e5787" args="[4]" -->
<a class="el" href="classDPoint2.html">DPoint2</a>&nbsp;</td><td class="memItemRight" valign="bottom"><b>m_Corners</b> [4]</td></tr>

<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="c204c9122c1379abccb727d91179cc25"></a><!-- doxytag: member="vtElevationGrid::m_proj" ref="c204c9122c1379abccb727d91179cc25" args="" -->
<a class="el" href="classvtProjection.html">vtProjection</a>&nbsp;</td><td class="memItemRight" valign="bottom"><b>m_proj</b></td></tr>

<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="4e093686f70cc57035e5595b32465b13"></a><!-- doxytag: member="vtElevationGrid::m_strOriginalDEMName" ref="4e093686f70cc57035e5595b32465b13" args="" -->
<a class="el" href="classvtString.html">vtString</a>&nbsp;</td><td class="memItemRight" valign="bottom"><b>m_strOriginalDEMName</b></td></tr>

<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="01ce8be4934d9d6c6061a33f692e5cde"></a><!-- doxytag: member="vtElevationGrid::m_strError" ref="01ce8be4934d9d6c6061a33f692e5cde" args="" -->
<a class="el" href="classvtString.html">vtString</a>&nbsp;</td><td class="memItemRight" valign="bottom"><b>m_strError</b></td></tr>

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<hr><a name="_details"></a><h2>Detailed Description</h2>
The vtElevationGrid class represents a generic grid of elevation data. It supports reading and writing the data from many file formats, testing the height at any given point, reprojecting the grid between coordinate systems, and many other operations.<p>
Height elements ("heixels") can be either integer (2 bytes) or floating point (4 bytes). Heixel values are always in meters. Areas of unknown elevation are represented by the value INVALID_ELEVATION.<p>
To load a grid from a file, first create an empty grid, then call the appropriated Load method. 
<p>
<hr><h2>Constructor &amp; Destructor Documentation</h2>
<a class="anchor" name="5a54995d450690c188150499bf4836d2"></a><!-- doxytag: member="vtElevationGrid::vtElevationGrid" ref="5a54995d450690c188150499bf4836d2" args="()" --><p>
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          <td class="md" nowrap valign="top">vtElevationGrid::vtElevationGrid           </td>
          <td class="md" valign="top">(&nbsp;</td>
          <td class="mdname1" valign="top" nowrap>          </td>
          <td class="md" valign="top">&nbsp;)&nbsp;</td>
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<p>
Constructor: Creates an empty grid.     </td>
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<a class="anchor" name="31be07f36df2a633044cfa568a28691d"></a><!-- doxytag: member="vtElevationGrid::vtElevationGrid" ref="31be07f36df2a633044cfa568a28691d" args="(const vtElevationGrid &amp;rhs)" --><p>
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          <td class="md" nowrap valign="top">vtElevationGrid::vtElevationGrid           </td>
          <td class="md" valign="top">(&nbsp;</td>
          <td class="md" nowrap valign="top">const <a class="el" href="classvtElevationGrid.html">vtElevationGrid</a> &amp;&nbsp;</td>
          <td class="mdname1" valign="top" nowrap> <em>rhs</em>          </td>
          <td class="md" valign="top">&nbsp;)&nbsp;</td>
          <td class="md" nowrap></td>
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Copy constructor.     </td>
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<a class="anchor" name="4813553debec097090c3ea30ccfe1e51"></a><!-- doxytag: member="vtElevationGrid::vtElevationGrid" ref="4813553debec097090c3ea30ccfe1e51" args="(const DRECT &amp;area, int iColumns, int iRows, bool bFloat, const vtProjection &amp;proj)" --><p>
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          <td class="md" nowrap valign="top">vtElevationGrid::vtElevationGrid           </td>
          <td class="md" valign="top">(&nbsp;</td>
          <td class="md" nowrap valign="top">const <a class="el" href="classDRECT.html">DRECT</a> &amp;&nbsp;</td>
          <td class="mdname" nowrap> <em>area</em>, </td>
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          <td class="md" nowrap align="right"></td>
          <td class="md"></td>
          <td class="md" nowrap>int&nbsp;</td>
          <td class="mdname" nowrap> <em>iColumns</em>, </td>
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          <td class="md" nowrap align="right"></td>
          <td class="md"></td>
          <td class="md" nowrap>int&nbsp;</td>
          <td class="mdname" nowrap> <em>iRows</em>, </td>
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          <td class="md" nowrap align="right"></td>
          <td class="md"></td>
          <td class="md" nowrap>bool&nbsp;</td>
          <td class="mdname" nowrap> <em>bFloat</em>, </td>
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          <td class="md" nowrap align="right"></td>
          <td class="md"></td>
          <td class="md" nowrap>const <a class="el" href="classvtProjection.html">vtProjection</a> &amp;&nbsp;</td>
          <td class="mdname" nowrap> <em>proj</em></td>
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          <td class="md"></td>
          <td class="md">)&nbsp;</td>
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<p>
Constructor: Creates a grid of given size.<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>area</em>&nbsp;</td><td>the coordinate extents of the grid (rectangular area) </td></tr>
    <tr><td valign="top"></td><td valign="top"><em>iColumns</em>&nbsp;</td><td>number of columns in the grid (east-west) </td></tr>
    <tr><td valign="top"></td><td valign="top"><em>iRows</em>&nbsp;</td><td>number of rows (north-south) </td></tr>
    <tr><td valign="top"></td><td valign="top"><em>bFloat</em>&nbsp;</td><td>data size: <code>true</code> to use floating-point, <code>false</code> for shorts. </td></tr>
    <tr><td valign="top"></td><td valign="top"><em>proj</em>&nbsp;</td><td>the geographical projection to use.</td></tr>
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</dl>
The grid will initially have no data in it (all values are INVALID_ELEVATION).     </td>
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<a class="anchor" name="ba35d5e6e2cf9926826bc7b59124cbca"></a><!-- doxytag: member="vtElevationGrid::~vtElevationGrid" ref="ba35d5e6e2cf9926826bc7b59124cbca" args="()" --><p>
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          <td class="md" nowrap valign="top">vtElevationGrid::~vtElevationGrid           </td>
          <td class="md" valign="top">(&nbsp;</td>
          <td class="mdname1" valign="top" nowrap>          </td>
          <td class="md" valign="top">&nbsp;)&nbsp;</td>
          <td class="md" nowrap><code> [virtual]</code></td>
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<p>
Destructor     </td>
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<hr><h2>Member Function Documentation</h2>
<a class="anchor" name="db494c2b7d195d355579cd499c14e33f"></a><!-- doxytag: member="vtElevationGrid::ComputeCornersFromExtents" ref="db494c2b7d195d355579cd499c14e33f" args="()" --><p>
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          <td class="md" nowrap valign="top">void vtElevationGrid::ComputeCornersFromExtents           </td>
          <td class="md" valign="top">(&nbsp;</td>
          <td class="mdname1" valign="top" nowrap>          </td>
          <td class="md" valign="top">&nbsp;)&nbsp;</td>
          <td class="md" nowrap><code> [protected]</code></td>
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<p>
For a grid whose absolute extents are known, use those extents to imply the 4 corners coordinates.     </td>
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