span class="r-pr">#&gt;</span> size        : 10, 10, 3  (nrow, ncol, nlyr)</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> resolution  : 0.1, 0.1  (x, y)</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> extent      : 0, 1, 0, 1  (xmin, xmax, ymin, ymax)</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> coord. ref. : Undefined Cartesian SRS </span>
<span class="r-out co"><span class="r-pr">#&gt;</span> source(s)   : memory</span>
<span class="r-out co"><span class="r-pr