"examples"><div class='input'><span class='kw'>if</span> <span class='op'>(</span><span class='cn'>FALSE</span><span class='op'>)</span> <span class='op'>{</span>
<span class='va'>data_dir</span> <span class='op'>&lt;-</span> <span class='fu'><a href='https://rdrr.io/r/base/system.file.html'>system.file</a></span><span class='op'>(</span><span class='st'>"extdata"</span>, package <span class='op'>=</span> <span class='st'>"stplanr"</span><span class='op'>)</span>
<span class='fu'><a href='https://rdrr.io/r/