an class='fu'><a href='https://rdrr.io/r/base/c.html'>c</a></span>(<span class='fl'>4</span>,<span class='fl'>4</span>,<span class='fl'>4</span>,<span class='fl'>5</span>)))
<span class='no'>mask</span> <span class='kw'>&lt;-</span> <span class='kw pkg'>oro.nifti</span><span class='kw ns'>::</span><span class='fu'><a href='https://rdrr.io/pkg/oro.nifti/man/nifti.html'>nifti</a></span>(<span class='kw'>img</span> <span class='kw'>=</span> <span class='fu'><a href='https://rdrr.io/r/base/array.html'>array</a>