d by the user via parameter
<code>scale</code>, in which case the argument should be the vector
\((a_1, \ldots, a_K)\); alternatively, if
<code>scale = "estimate"</code>, then <code>ebnm</code> sets the grid via function
<code><a href="ebnm_scale_unimix.html">ebnm_scale_unimix</a></code>.
Note that <code>ebnm</code> sets the grid differently from
function <code><a href="https://rdrr.io/pkg/ashr/man/ash.html" class="external-link">ash</a></code>. To use the <code>ash</code> grid, set
<code>scale = "estimate"