User Macro Document - Krig2D

<table cellspacing="0" cellpadding="0"> <tr height="150"> <td align="left"><img src="../../../../img/logo.gif" alt="IAC logo"></img></td> <td width="100%" rowspan="2" align="left" valign="center"> <table cellspacing="0" cellpadding="0"> <tr> <td> <table class="navigate_doc" width="100%" border="0" align="center"> <tr bgcolor="c6c6e0" align="center"> <th nowrap width="1%" height="32">P0173</th> <th nowrap width="98%">Krig</th> <th nowrap width="1%">9th November 2001</th> </tr> <tr> <td align="left" colspan="3"> <p><b>Authors:</b> Mark Lambert, Roger Fleuty, Ian Curington, AVS Inc.; Ma YingLiang, MVC; Andrew Dodd, IAC <b>Version:</b> 1.1 <b>Path:</b> iac_proj/krig/</p> <a href="../../filters.shtml" target="_top"><img src="../../../../img/filter.gif" width="44" height="30" border="0" alt="Filters"></a> <a href="interp2D.shtml" target="_top"> <img src="../../../../img/doc_umac.gif" border="0" width="30" height="30" alt="User Macro Document - Interp2D"></a> <a href="krig2D.shtml" target="_top"> <img src="../../../../img/doc_umac.gif" border="0" width="30" height="30" alt="User Macro Document - Krig2D"></a> <a href="krig3D.shtml" target="_top"> <img src="../../../../img/doc_umac.gif" border="0" width="30" height="30" alt="User Macro Document - Krig3D"></a> <a href="source/filters/krig/krig.tar.gz"> <img src="../../../../img/targz.gif" border="0" width="52" height="30" alt="Archive - krig.tar.gz"></a> <a href="source/filters/krig/krig.tar.Z"> <img src="../../../../img/tarz.gif" border="0" width="52" height="30" alt="Archive - krig.tar.Z"></a> <a href="source/filters/krig/krig.zip"> <img src="../../../../img/zip.gif" border="0" width="52" height="30" alt="Archive - krig.zip"></a> <img src="../../../../img/note.gif" width="15" height="30" alt="Windows Only"> </td> </tr> </table> <br> </td> </tr> <tr> <td>  <h1> Krig2D</h1> <h3> Synopsis</h3> <p>Advanced interpolation modules using polynomial and statistically based kriging methods in 2D.</p> <p> <h4>Input Ports</h4> <table class="parameters"> <tr> <td width="100"><b>Name</b></td> <td width="150"><b>Type</b></td> <td width="425"><b>Description</b></td> </tr> <tr> <td colspan="4"><hr></td> </tr> <tr> <td width="100"><i>in_fld</i></td> <td width="80">Mesh+Node_Data</td> <td width="425">2D scatter points</td> </tr> <tr> <td colspan="4"><hr></td> </tr> </table> <h4>Parameters</h4> <table class="parameters"> <tr> <td width="100"><b>Name</b></td> <td width="80"><b>Type</b></td> <td width="425"><b>Description</b></td> </tr> <tr> <td colspan="4"><hr></td> </tr> <tr> <td width="100"><i>nx</i></td> <td width="80">int</td> <td width="425">number of grid nodes in x direction</td> </tr> <tr> <td width="100"><i>ny</i></td> <td width="80">int</td> <td width="425">number of grid nodes in y direction</td> </tr> <tr> <td width="100"><i>radius</i></td> <td width="80">float</td> <td width="425">search radius</td> </tr> <tr> <td colspan="4"><hr></td> </tr> </table> <h4>Output Ports</h4> <table class="parameters"> <tr> <td width="100"><b>Name</b></td> <td width="80"><b>Type</b></td> <td width="425"><b>Description</b></td> </tr> <tr> <td colspan="4"><hr></td> </tr> <tr> <td width="100"><i>zest</i></td> <td width="80">float[][]</td> <td width="425">estmated values at grid nodes</td> </tr> <tr> <td width="100"><i>zstd</i></td> <td width="80">float[][]</td> <td width="425">standard deviation at grid nodes</td> </tr> <tr> <td colspan="4"><hr></td> </tr> </table> </p> <h3> Description</h3> The Krig set of modules perform scatter to grid interpolation. They are based on the Toolmaster interpolation system, using both simple and Kriging methods. As these routines are already part of the AVS/Express runtime environment, these modules provide high-level Field wrappers around these interpolation functions. Three macro modules are provided in this Krig library: <p><br><b><i>Krig2D</i></b> - Interpolation from 2D scatter points and data values to a Kriging 2D grid. <p>Estimates the value of a bivariate random function at all grid nodes belonging to a 2D regular grid using the method of Kriging. A theoretical semi-variogram function "gam" is used in the computation of a random function estimate and corresponding standard deviation values.</p> <h3> Inputs</h3> <p><b><i>in_fld</i></b></p> <p>2D scatter points which combine a mesh and some node data. A Node_Data object represents the values of some dataset at the node points of a field, while the Mesh represents the locations of that field's nodes in space. </p> <h3> Outputs</h3> <p><b><i>zest</i></b></p> <p>2D float array. This array contains the estimated values at the grid nodes. </p> <p><b><i>zstd</i></b></p> <p>2D float array. This array contains the standard deviations t the grid nodes. </p> <h3> Utility Macros</h3> <p> The Krig2D macro uses the XuKrigging2D low-level module. This modules uses the XuKriging2DCalc and other functions of the the Toolmaster agX library. </p> <h3> Files</h3> <p><i>iac_proj/krig/krigmods.v</i> contains the V definition of the agxint,XuKrigging2D and XuKrigging3D modules.</p> <p><i>iac_proj/krig/krigmacs.v</i> contains the V definitions of the Krig2D,Interp2D and Krig macros.</p> <p><i>iac_proj/krig/krigapps.v</i> contains the V definition of the KrigApps example application.</p> <h3> Other Notes</h3>  See the documentation for <b><i>XuKriging2DCalc,  XuKriging3DCalc,  XuGriddingLocalFitCalc </i></b>in the Toolmaster agX Reference Manual. <h3> Authors</h3> <p> <pre> Mark Lambert, Roger Fleuty, Ian Curington </pre> <pre> Advanced Visual Systems, Inc. </pre> </p> <h3> Modifications</h3> <p> <pre> Ma YingLiang, Manchester Visualization Centre Andrew Dodd, International AVS Centre </pre> </p> <h3> Contact</h3> <p> <pre> International AVS Centre Manchester Visualization Centre Manchester Computing University of Manchester Oxford Road Manchester United Kingdom M13 9PL </pre> </p>  </td> </tr> </table> </td> </tr> <tr height="100%"> <td class="sideLink" width="25%" align="left" valign="top" nowrap="nowrap"> <p><a href="../../../../general/index.shtml" target="_top">General Information</a></p> <p><a href="../../../../repository/index.shtml" target="_top">Repositories</a></p> <p class="sideLinkLevel2"><a href="../../../new/index.shtml" target="_top">  New Releases</a></p> <p class="sideLinkLevel2"><a href="../../../download/index.shtml" target="_top">  Download</a></p> <p class="sideLinkLevel2"><a href="../../../submit/index.shtml" target="_top">  Submit</a></p> <p class="sideLinkLevel2"><a href="../../../pfiles/index.shtml" target="_top">  Project Files</a></p> <p class="sideLinkLevel2"><a href="../../../avs5/index.shtml" target="_top">  AVS5</a></p> <p class="sideLinkLevel2"><a href="../../../express/index.shtml" target="_top">  AVS/Express</a></p> <p class="sideLinkLevel3"><a href="../../atoz.shtml" target="_top">    A to Z</a></p> <p class="sideLinkLevel3"><a href="../../number.shtml" target="_top">    Project #</a></p> <p></p> <p class="sideLinkLevel3"><a href="../../data_io.shtml" target="_top">    Data IO</a></p> <p class="sideLinkLevel3"><a href="../../filters.shtml" target="_top">    Filters</a></p> <p class="sideLinkLevel3"><a href="../../mappers.shtml" target="_top">    Mappers</a></p> <p class="sideLinkLevel3"><a href="../../misc.shtml" target="_top">    Miscellaneous</a></p> <p class="sideLinkLevel3"><a href="../../special.shtml" target="_top">    Special Projects</a></p> <p class="sideLinkLevel2"><a href="../../../pog/index.shtml" target="_top">  Project Guidelines</a></p> <p><a href="../../../../usergroup/index.shtml" target="_top">User Group</a></p> <p><a href="../../../../training/index.shtml" target="_top">Training Materials</a></p> </td> </tr> </table> <table width="100%" border="0" cellspacing="0" cellpadding="0" bgcolor="c6c6e0"> <tr> <td><img src="../../../../img/foot1.gif" alt="IAC" width="155" height="25"></td> <td width="100%"> Last Updated:  26th November 2002 </td> </tr> </table>