/function.html'>return</a></span><span class='op'>(</span><span class='va'>out</span><span class='op'>)</span>
<span class='op'>}</span><span class='op'>)</span><span class='op'>)</span>

<span class='co'>## create splines</span>
<span class='kw'><a href='https://rdrr.io/r/base/library.html'>library</a></span><span class='op'>(</span><span class='va'>splines</span><span class='op'>)</span>
<span class='va'>time_splines</span> <span class='op'>&lt;-</span> <span class='fu'><a href='https://rdrr.io/r/splines/