>points</code> input. Projection and unit conversion is attempted.
See the function documentation for details. See the documentation of the
<a href="https://cran.r-project.org/package=RANN" class="external-link">nn2 function from the
RANN package</a> for more information on how the search works.</p>
<p>NOTE: If you have a small area in which you need flowline indexes,
<code><a href="../reference/get_flowline_index.html">get_flowline_index()</a></code> has an option to download flowlines in
the bounding box 