anchor" href="#arg-iterations"></a></dt>
<dd><p>number of iterations.  Set this to 1 to perform just
one iteration, using the radii as described at <code>xr,yr</code> above.</p></dd>


<dt id="arg-trim">trim<a class="anchor" aria-label="anchor" href="#arg-trim"></a></dt>
<dd><p>a number between 0 and 1, indicating the quantile of data weight
to be used as a criterion for blanking out the gridded value (using
<code>NA</code>).  If 0, the whole <code>zg</code> grid is returned.  If &gt;0, any spots
on the gri