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FORTRAN.internal.html
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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"><html xmlns="http://www.w3.org/1999/xhtml"><head><title>R: FORTRAN subroutines used in fields functions</title>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<link rel="stylesheet" type="text/css" href="R.css" />
</head><body>
<table width="100%" summary="page for fields exported FORTRAN {fields}"><tr><td>fields exported FORTRAN {fields}</td><td style="text-align: right;">R Documentation</td></tr></table>
<h2>
FORTRAN subroutines used in fields functions
</h2>
<h3>Description</h3>
<p>These functions implement cubic smoothing splines and also provide some basic
computations for radial basis functions. All are called using the <code>.FORTRAN</code>
interface.
</p>
<h3>Details</h3>
<p>For these low level FORTRAN subroutines refer to the R functions for the calling
sequence and to the src subdirectory of the fields pacakage for the source code.
</p>
<dl>
<dt>css</dt><dd><p>Cubic smoothing spline see <code>sreg</code> and <code>splint</code></p>
</dd>
<dt>ddfind</dt><dd><p>Finds nearest neighbor points within a fixed distance. See <code>fields.rdist.near</code></p>
</dd>
<dt>dmaket</dt><dd><p>Creates matrix of all polynomial terms up to fixed order. See <code>fields.mkpoly</code></p>
</dd>
<dt>evlpoly</dt><dd><p>evaluates a univariate polynomial. See codefields.evlpoly</p>
</dd>
<dt>evlpoly2</dt><dd><p> evaluates a multivariate polynomial. See codefields.evlpoly2</p>
</dd>
<dt>inpoly</dt><dd><p>Determine which 2-d locations are within a polynomial. see <code>in.poly</code></p>
</dd>
<dt>igpoly</dt><dd><p>Determine which 2-d grid points locations are within a polynomial. see <code>in.poly.grid</code></p>
</dd>
<dt>multeb</dt><dd><p>Multiply an exponential cross covariance matrix by another matrix. See <code>exp.cov</code></p>
</dd>
<dt>multrb</dt><dd><p>Multiply an radial basis function matrix by another matrix. See <code>rad.cov</code></p>
</dd>
<dt>radbas</dt><dd><p>Evaluates radial basis functions. See <code>rdist.R</code></p>
</dd>
<dt>rcss</dt><dd><p>Robust cubic smoothing spline. See <code>qsreg</code></p>
</dd>
</dl>
<hr /><div style="text-align: center;">[Package <em>fields</em> version 9.9 <a href="00Index.html">Index</a>]</div>
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