   <div id="details">
    <h2>Details</h2>
    <p><code>interp</code> methods are interfaces to the fortran routine <code>interp_data_grid</code>
   (in <code>grid_module.f90</code>).</p>
<p><code>predict.locpol.bin</code> is an interface to the fortran routine
<code>predict_lp</code> (in <code>lp_module.f90</code>).</p>
    </div>
    <div id="note">
    <h2>Note</h2>
    <p>Linear extrapolation is performed from the end nodes of the grid.</p>
<p>WARNING: May fail with missing values (especially if <code>o