g
unit, and each column correspond to a different management zone.
It should have the same number of planning units and zones
as those in the argument to <code>x</code>. Additionally, any planning units
missing cost (<code>NA</code>) values for a particular zone should also have a
missing (<code>NA</code>) values in the argument to <code>solution</code>.</p></dd>


<dt><code>x</code> has <code><a href="https://rspatial.github.io/terra/reference/rast.html" class="external-link">terra::rast()</a></code> plann