�� directory (e.g. dist.net1.RData). These extra
distance matrices are needed to perform block Kriging using
<code><a href="predict.SSN2.html">predict.ssn_lm</a></code>.</p>
<p>If <code>only_predpts = TRUE</code>, the downstream
hydrologic distances will not be calculated between observed sites
themselves. Pairwise distances will only be calculated for observed
and prediction locations and. Pairwise distances between prediction
locations will also be calculated if <code>among_predpts = TRUE</code>.</p>
    