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Next: <a href="2D-Interpolation-Functions.html#g_t2D-Interpolation-Functions" accesskey="n" rel="next">2D Interpolation Functions</a>, Previous: <a href="1D-Interpolation-References-and-Further-Reading.html#g_t1D-Interpolation-References-and-Further-Reading" accesskey="p" rel="previous">1D Interpolation References and Further Reading</a>, Up: <a href="Interpolation.html#Interpolation" accesskey="u" rel="up">Interpolation</a> &nbsp; [<a href="Function-Index.html#Function-Index" title="Index" rel="index">Index</a>]</p>
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<a name="Introduction-to-2D-Interpolation"></a>
<h3 class="section">28.9 Introduction to 2D Interpolation</h3>

<p>Given a set of <em>x</em> coordinates <em>x_1,...,x_m</em> and a set of
<em>y</em> coordinates <em>y_1,...,y_n</em>, each in increasing order,
plus a set of function values <em>z_{ij}</em>
for each grid point <em>(x_i,y_j)</em>, the routines described in this
section compute a continuous interpolation function <em>z(x,y)</em> such
that <em>z(x_i,y_j) = z_{ij}</em>.
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