diff --git a/404.html b/404.html
index 06c966b..10acf78 100644
--- a/404.html
+++ b/404.html
@@ -32,7 +32,7 @@
       </button>
       <span class="navbar-brand">
         <a class="navbar-link" href="index.html">od</a>
-        <span class="version label label-default" data-toggle="tooltip" data-placement="bottom" title="">0.5.0</span>
+        <span class="version label label-default" data-toggle="tooltip" data-placement="bottom" title="">0.5.1</span>
       </span>
     </div>
 
@@ -86,7 +86,7 @@ <h1>Page not found (404)</h1>
 
       <footer><div class="copyright">
   <p></p>
-<p>Developed by Robin Lovelace.</p>
+<p>Developed by Robin Lovelace, Malcolm Morgan.</p>
 </div>
 
 <div class="pkgdown">
diff --git a/CODE_OF_CONDUCT.html b/CODE_OF_CONDUCT.html
index 9c16cef..88d0f5a 100644
--- a/CODE_OF_CONDUCT.html
+++ b/CODE_OF_CONDUCT.html
@@ -17,7 +17,7 @@
       </button>
       <span class="navbar-brand">
         <a class="navbar-link" href="index.html">od</a>
-        <span class="version label label-default" data-toggle="tooltip" data-placement="bottom" title="">0.5.0</span>
+        <span class="version label label-default" data-toggle="tooltip" data-placement="bottom" title="">0.5.1</span>
       </span>
     </div>
 
@@ -128,7 +128,7 @@ <h2 id="attribution">Attribution<a class="anchor" aria-label="anchor" href="#att
 
 
       <footer><div class="copyright">
-  <p></p><p>Developed by Robin Lovelace.</p>
+  <p></p><p>Developed by Robin Lovelace, Malcolm Morgan.</p>
 </div>
 
 <div class="pkgdown">
diff --git a/CONTRIBUTING.html b/CONTRIBUTING.html
index 876e421..58a2e46 100644
--- a/CONTRIBUTING.html
+++ b/CONTRIBUTING.html
@@ -17,7 +17,7 @@
       </button>
       <span class="navbar-brand">
         <a class="navbar-link" href="index.html">od</a>
-        <span class="version label label-default" data-toggle="tooltip" data-placement="bottom" title="">0.5.0</span>
+        <span class="version label label-default" data-toggle="tooltip" data-placement="bottom" title="">0.5.1</span>
       </span>
     </div>
 
@@ -91,7 +91,7 @@ <h2 id="code-of-conduct">Code of Conduct<a class="anchor" aria-label="anchor" hr
 
 
       <footer><div class="copyright">
-  <p></p><p>Developed by Robin Lovelace.</p>
+  <p></p><p>Developed by Robin Lovelace, Malcolm Morgan.</p>
 </div>
 
 <div class="pkgdown">
diff --git a/LICENSE.html b/LICENSE.html
index 29a3e46..4573cbb 100644
--- a/LICENSE.html
+++ b/LICENSE.html
@@ -17,7 +17,7 @@
       </button>
       <span class="navbar-brand">
         <a class="navbar-link" href="index.html">od</a>
-        <span class="version label label-default" data-toggle="tooltip" data-placement="bottom" title="">0.5.0</span>
+        <span class="version label label-default" data-toggle="tooltip" data-placement="bottom" title="">0.5.1</span>
       </span>
     </div>
 
@@ -257,7 +257,7 @@ <h2 id="how-to-apply-these-terms-to-your-new-programs">How to Apply These Terms
 
 
       <footer><div class="copyright">
-  <p></p><p>Developed by Robin Lovelace.</p>
+  <p></p><p>Developed by Robin Lovelace, Malcolm Morgan.</p>
 </div>
 
 <div class="pkgdown">
diff --git a/SUPPORT.html b/SUPPORT.html
index 021d934..84f6422 100644
--- a/SUPPORT.html
+++ b/SUPPORT.html
@@ -17,7 +17,7 @@
       </button>
       <span class="navbar-brand">
         <a class="navbar-link" href="index.html">od</a>
-        <span class="version label label-default" data-toggle="tooltip" data-placement="bottom" title="">0.5.0</span>
+        <span class="version label label-default" data-toggle="tooltip" data-placement="bottom" title="">0.5.1</span>
       </span>
     </div>
 
@@ -81,7 +81,7 @@ <h2 id="what-happens-next">What happens next?<a class="anchor" aria-label="ancho
 
 
       <footer><div class="copyright">
-  <p></p><p>Developed by Robin Lovelace.</p>
+  <p></p><p>Developed by Robin Lovelace, Malcolm Morgan.</p>
 </div>
 
 <div class="pkgdown">
diff --git a/articles/index.html b/articles/index.html
index 118a9d8..88a81b0 100644
--- a/articles/index.html
+++ b/articles/index.html
@@ -17,7 +17,7 @@
       </button>
       <span class="navbar-brand">
         <a class="navbar-link" href="../index.html">od</a>
-        <span class="version label label-default" data-toggle="tooltip" data-placement="bottom" title="">0.5.0</span>
+        <span class="version label label-default" data-toggle="tooltip" data-placement="bottom" title="">0.5.1</span>
       </span>
     </div>
 
@@ -61,7 +61,7 @@ <h3>All vignettes</h3>
 
 
       <footer><div class="copyright">
-  <p></p><p>Developed by Robin Lovelace.</p>
+  <p></p><p>Developed by Robin Lovelace, Malcolm Morgan.</p>
 </div>
 
 <div class="pkgdown">
diff --git a/articles/od.html b/articles/od.html
index 9108806..45b14b1 100644
--- a/articles/od.html
+++ b/articles/od.html
@@ -32,7 +32,7 @@
       </button>
       <span class="navbar-brand">
         <a class="navbar-link" href="../index.html">od</a>
-        <span class="version label label-default" data-toggle="tooltip" data-placement="bottom" title="">0.5.0</span>
+        <span class="version label label-default" data-toggle="tooltip" data-placement="bottom" title="">0.5.1</span>
       </span>
     </div>
 
@@ -674,7 +674,7 @@ <h2 class="unnumbered" id="references">References<a class="anchor" aria-label="a
 
       <footer><div class="copyright">
   <p></p>
-<p>Developed by Robin Lovelace.</p>
+<p>Developed by Robin Lovelace, Malcolm Morgan.</p>
 </div>
 
 <div class="pkgdown">
diff --git a/authors.html b/authors.html
index fd39445..ce75ab1 100644
--- a/authors.html
+++ b/authors.html
@@ -17,7 +17,7 @@
       </button>
       <span class="navbar-brand">
         <a class="navbar-link" href="index.html">od</a>
-        <span class="version label label-default" data-toggle="tooltip" data-placement="bottom" title="">0.5.0</span>
+        <span class="version label label-default" data-toggle="tooltip" data-placement="bottom" title="">0.5.1</span>
       </span>
     </div>
 
@@ -55,6 +55,10 @@ <h1>Authors and Citation</h1>
           <p><strong>Robin Lovelace</strong>. Author, maintainer. <a href="https://orcid.org/0000-0001-5679-6536" target="orcid.widget" aria-label="ORCID" class="external-link"><span class="fab fa-orcid orcid" aria-hidden="true"></span></a>
           </p>
         </li>
+        <li>
+          <p><strong>Malcolm Morgan</strong>. Author. <a href="https://orcid.org/0000-0002-9488-9183" target="orcid.widget" aria-label="ORCID" class="external-link"><span class="fab fa-orcid orcid" aria-hidden="true"></span></a>
+          </p>
+        </li>
         <li>
           <p><strong>David Cooley</strong>. Contributor.
           </p>
@@ -68,15 +72,15 @@ <h1 id="citation">Citation</h1>
     </div>
 
 
-    <p>Lovelace R (2024).
+    <p>Lovelace R, Morgan M (2024).
 <em>od: Manipulate and Map Origin-Destination Data</em>.
-R package version 0.5.0, https://itsleeds.github.io/od/, <a href="https://github.com/itsleeds/od" class="external-link">https://github.com/itsleeds/od</a>.
+R package version 0.5.1, https://itsleeds.github.io/od/, <a href="https://github.com/itsleeds/od" class="external-link">https://github.com/itsleeds/od</a>.
 </p>
     <pre>@Manual{,
   title = {od: Manipulate and Map Origin-Destination Data},
-  author = {Robin Lovelace},
+  author = {Robin Lovelace and Malcolm Morgan},
   year = {2024},
-  note = {R package version 0.5.0, https://itsleeds.github.io/od/},
+  note = {R package version 0.5.1, https://itsleeds.github.io/od/},
   url = {https://github.com/itsleeds/od},
 }</pre>
 
@@ -87,7 +91,7 @@ <h1 id="citation">Citation</h1>
 
 
       <footer><div class="copyright">
-  <p></p><p>Developed by Robin Lovelace.</p>
+  <p></p><p>Developed by Robin Lovelace, Malcolm Morgan.</p>
 </div>
 
 <div class="pkgdown">
diff --git a/index.html b/index.html
index d62b413..0397f49 100644
--- a/index.html
+++ b/index.html
@@ -33,7 +33,7 @@
       </button>
       <span class="navbar-brand">
         <a class="navbar-link" href="index.html">od</a>
-        <span class="version label label-default" data-toggle="tooltip" data-placement="bottom" title="">0.5.0</span>
+        <span class="version label label-default" data-toggle="tooltip" data-placement="bottom" title="">0.5.1</span>
       </span>
     </div>
 
@@ -253,6 +253,7 @@ <h2 data-toc-skip>Citation</h2>
 <h2 data-toc-skip>Developers</h2>
 <ul class="list-unstyled">
 <li>Robin Lovelace <br><small class="roles"> Author, maintainer </small> <a href="https://orcid.org/0000-0001-5679-6536" target="orcid.widget" aria-label="ORCID" class="external-link"><span class="fab fa-orcid orcid" aria-hidden="true"></span></a> </li>
+<li>Malcolm Morgan <br><small class="roles"> Author </small> <a href="https://orcid.org/0000-0002-9488-9183" target="orcid.widget" aria-label="ORCID" class="external-link"><span class="fab fa-orcid orcid" aria-hidden="true"></span></a> </li>
 <li><a href="authors.html">More about authors...</a></li>
 </ul>
 </div>
@@ -275,7 +276,7 @@ <h2 data-toc-skip>Dev status</h2>
 
       <footer><div class="copyright">
   <p></p>
-<p>Developed by Robin Lovelace.</p>
+<p>Developed by Robin Lovelace, Malcolm Morgan.</p>
 </div>
 
 <div class="pkgdown">
diff --git a/news/index.html b/news/index.html
index 0b00ed3..a9f3bd3 100644
--- a/news/index.html
+++ b/news/index.html
@@ -17,7 +17,7 @@
       </button>
       <span class="navbar-brand">
         <a class="navbar-link" href="../index.html">od</a>
-        <span class="version label label-default" data-toggle="tooltip" data-placement="bottom" title="">0.5.0</span>
+        <span class="version label label-default" data-toggle="tooltip" data-placement="bottom" title="">0.5.1</span>
       </span>
     </div>
 
@@ -50,6 +50,10 @@ <h1 data-toc-skip>Changelog <small></small></h1>
       <small>Source: <a href="https://github.com/itsleeds/od/blob/main/NEWS.md" class="external-link"><code>NEWS.md</code></a></small>
     </div>
 
+    <div class="section level2">
+<h2 class="page-header" data-toc-text="0.5.1" id="od-051-2024-08">od 0.5.1 (2024-08)<a class="anchor" aria-label="anchor" href="#od-051-2024-08"></a></h2>
+<ul><li>Bug fix that was causing incorrect column names (<a href="https://github.com/itsleeds/od/issues/50" class="external-link">#50</a>)</li>
+</ul></div>
     <div class="section level2">
 <h2 class="page-header" data-toc-text="0.5.0" id="od-050-2024-08">od 0.5.0 (2024-08)<a class="anchor" aria-label="anchor" href="#od-050-2024-08"></a></h2>
 <ul><li>New <code>max_dist</code> argument in <code><a href="../reference/points_to_od.html">points_to_od()</a></code> (also applicable to <code><a href="../reference/points_to_od.html">points_to_odl()</a></code>) to limit the distance between origins and destinations. Credit to Malcolm Morgan <a href="https://github.com/mem48" class="external-link">@mem48</a> for this contribution, closing 4-year-old issue <a href="https://github.com/itsleeds/od/issues/18" class="external-link">#18</a>.</li>
@@ -127,7 +131,7 @@ <h2 class="page-header" data-toc-text="0.1.0" id="od-010">od 0.1.0<small>2021-02
 
 
       <footer><div class="copyright">
-  <p></p><p>Developed by Robin Lovelace.</p>
+  <p></p><p>Developed by Robin Lovelace, Malcolm Morgan.</p>
 </div>
 
 <div class="pkgdown">
diff --git a/pkgdown.yml b/pkgdown.yml
index e71d6ce..3b20e9c 100644
--- a/pkgdown.yml
+++ b/pkgdown.yml
@@ -3,4 +3,4 @@ pkgdown: 2.1.0
 pkgdown_sha: ~
 articles:
   od: od.html
-last_built: 2024-08-20T00:11Z
+last_built: 2024-08-20T20:20Z
diff --git a/reference/Rplot002.png b/reference/Rplot002.png
index 72f3e73..1255d04 100644
Binary files a/reference/Rplot002.png and b/reference/Rplot002.png differ
diff --git a/reference/coords_to_od.html b/reference/coords_to_od.html
index 723fafe..44c9d59 100644
--- a/reference/coords_to_od.html
+++ b/reference/coords_to_od.html
@@ -19,7 +19,7 @@
       </button>
       <span class="navbar-brand">
         <a class="navbar-link" href="../index.html">od</a>
-        <span class="version label label-default" data-toggle="tooltip" data-placement="bottom" title="">0.5.0</span>
+        <span class="version label label-default" data-toggle="tooltip" data-placement="bottom" title="">0.5.1</span>
       </span>
     </div>
 
@@ -127,7 +127,7 @@ <h2>Examples</h2>
 
 
       <footer><div class="copyright">
-  <p></p><p>Developed by Robin Lovelace.</p>
+  <p></p><p>Developed by Robin Lovelace, Malcolm Morgan.</p>
 </div>
 
 <div class="pkgdown">
diff --git a/reference/index.html b/reference/index.html
index e586bb9..095a953 100644
--- a/reference/index.html
+++ b/reference/index.html
@@ -17,7 +17,7 @@
       </button>
       <span class="navbar-brand">
         <a class="navbar-link" href="../index.html">od</a>
-        <span class="version label label-default" data-toggle="tooltip" data-placement="bottom" title="">0.5.0</span>
+        <span class="version label label-default" data-toggle="tooltip" data-placement="bottom" title="">0.5.1</span>
       </span>
     </div>
 
@@ -182,7 +182,7 @@ <h2 id="all-functions">All functions <a href="#all-functions" class="anchor" ari
 
 
       <footer><div class="copyright">
-  <p></p><p>Developed by Robin Lovelace.</p>
+  <p></p><p>Developed by Robin Lovelace, Malcolm Morgan.</p>
 </div>
 
 <div class="pkgdown">
diff --git a/reference/od_aggregate.html b/reference/od_aggregate.html
index 9cc1a71..40f9781 100644
--- a/reference/od_aggregate.html
+++ b/reference/od_aggregate.html
@@ -19,7 +19,7 @@
       </button>
       <span class="navbar-brand">
         <a class="navbar-link" href="../index.html">od</a>
-        <span class="version label label-default" data-toggle="tooltip" data-placement="bottom" title="">0.5.0</span>
+        <span class="version label label-default" data-toggle="tooltip" data-placement="bottom" title="">0.5.1</span>
       </span>
     </div>
 
@@ -116,7 +116,7 @@ <h2>Examples</h2>
 
 
       <footer><div class="copyright">
-  <p></p><p>Developed by Robin Lovelace.</p>
+  <p></p><p>Developed by Robin Lovelace, Malcolm Morgan.</p>
 </div>
 
 <div class="pkgdown">
diff --git a/reference/od_coordinates.html b/reference/od_coordinates.html
index 0aaa7d9..5051cfa 100644
--- a/reference/od_coordinates.html
+++ b/reference/od_coordinates.html
@@ -21,7 +21,7 @@
       </button>
       <span class="navbar-brand">
         <a class="navbar-link" href="../index.html">od</a>
-        <span class="version label label-default" data-toggle="tooltip" data-placement="bottom" title="">0.5.0</span>
+        <span class="version label label-default" data-toggle="tooltip" data-placement="bottom" title="">0.5.1</span>
       </span>
     </div>
 
@@ -149,7 +149,7 @@ <h2>Examples</h2>
 
 
       <footer><div class="copyright">
-  <p></p><p>Developed by Robin Lovelace.</p>
+  <p></p><p>Developed by Robin Lovelace, Malcolm Morgan.</p>
 </div>
 
 <div class="pkgdown">
diff --git a/reference/od_coordinates_ids.html b/reference/od_coordinates_ids.html
index ca4c684..43208ab 100644
--- a/reference/od_coordinates_ids.html
+++ b/reference/od_coordinates_ids.html
@@ -21,7 +21,7 @@
       </button>
       <span class="navbar-brand">
         <a class="navbar-link" href="../index.html">od</a>
-        <span class="version label label-default" data-toggle="tooltip" data-placement="bottom" title="">0.5.0</span>
+        <span class="version label label-default" data-toggle="tooltip" data-placement="bottom" title="">0.5.1</span>
       </span>
     </div>
 
@@ -104,7 +104,7 @@ <h2>Examples</h2>
 
 
       <footer><div class="copyright">
-  <p></p><p>Developed by Robin Lovelace.</p>
+  <p></p><p>Developed by Robin Lovelace, Malcolm Morgan.</p>
 </div>
 
 <div class="pkgdown">
diff --git a/reference/od_data_buildings.html b/reference/od_data_buildings.html
index 02009fb..29a6602 100644
--- a/reference/od_data_buildings.html
+++ b/reference/od_data_buildings.html
@@ -17,7 +17,7 @@
       </button>
       <span class="navbar-brand">
         <a class="navbar-link" href="../index.html">od</a>
-        <span class="version label label-default" data-toggle="tooltip" data-placement="bottom" title="">0.5.0</span>
+        <span class="version label label-default" data-toggle="tooltip" data-placement="bottom" title="">0.5.1</span>
       </span>
     </div>
 
@@ -88,7 +88,7 @@ <h2>Examples</h2>
 
 
       <footer><div class="copyright">
-  <p></p><p>Developed by Robin Lovelace.</p>
+  <p></p><p>Developed by Robin Lovelace, Malcolm Morgan.</p>
 </div>
 
 <div class="pkgdown">
diff --git a/reference/od_data_centroids.html b/reference/od_data_centroids.html
index 6ce8ec6..8e54fee 100644
--- a/reference/od_data_centroids.html
+++ b/reference/od_data_centroids.html
@@ -18,7 +18,7 @@
       </button>
       <span class="navbar-brand">
         <a class="navbar-link" href="../index.html">od</a>
-        <span class="version label label-default" data-toggle="tooltip" data-placement="bottom" title="">0.5.0</span>
+        <span class="version label label-default" data-toggle="tooltip" data-placement="bottom" title="">0.5.1</span>
       </span>
     </div>
 
@@ -84,7 +84,7 @@ <h2>Examples</h2>
 
 
       <footer><div class="copyright">
-  <p></p><p>Developed by Robin Lovelace.</p>
+  <p></p><p>Developed by Robin Lovelace, Malcolm Morgan.</p>
 </div>
 
 <div class="pkgdown">
diff --git a/reference/od_data_centroids2.html b/reference/od_data_centroids2.html
index 8ecae82..52a9102 100644
--- a/reference/od_data_centroids2.html
+++ b/reference/od_data_centroids2.html
@@ -18,7 +18,7 @@
       </button>
       <span class="navbar-brand">
         <a class="navbar-link" href="../index.html">od</a>
-        <span class="version label label-default" data-toggle="tooltip" data-placement="bottom" title="">0.5.0</span>
+        <span class="version label label-default" data-toggle="tooltip" data-placement="bottom" title="">0.5.1</span>
       </span>
     </div>
 
@@ -108,7 +108,7 @@ <h2>Examples</h2>
 
 
       <footer><div class="copyright">
-  <p></p><p>Developed by Robin Lovelace.</p>
+  <p></p><p>Developed by Robin Lovelace, Malcolm Morgan.</p>
 </div>
 
 <div class="pkgdown">
diff --git a/reference/od_data_destinations.html b/reference/od_data_destinations.html
index e30047f..3954e64 100644
--- a/reference/od_data_destinations.html
+++ b/reference/od_data_destinations.html
@@ -17,7 +17,7 @@
       </button>
       <span class="navbar-brand">
         <a class="navbar-link" href="../index.html">od</a>
-        <span class="version label label-default" data-toggle="tooltip" data-placement="bottom" title="">0.5.0</span>
+        <span class="version label label-default" data-toggle="tooltip" data-placement="bottom" title="">0.5.1</span>
       </span>
     </div>
 
@@ -91,7 +91,7 @@ <h2>Examples</h2>
 
 
       <footer><div class="copyright">
-  <p></p><p>Developed by Robin Lovelace.</p>
+  <p></p><p>Developed by Robin Lovelace, Malcolm Morgan.</p>
 </div>
 
 <div class="pkgdown">
diff --git a/reference/od_data_df.html b/reference/od_data_df.html
index 96c762d..6756f3c 100644
--- a/reference/od_data_df.html
+++ b/reference/od_data_df.html
@@ -21,7 +21,7 @@
       </button>
       <span class="navbar-brand">
         <a class="navbar-link" href="../index.html">od</a>
-        <span class="version label label-default" data-toggle="tooltip" data-placement="bottom" title="">0.5.0</span>
+        <span class="version label label-default" data-toggle="tooltip" data-placement="bottom" title="">0.5.1</span>
       </span>
     </div>
 
@@ -95,7 +95,7 @@ <h2>Examples</h2>
 
 
       <footer><div class="copyright">
-  <p></p><p>Developed by Robin Lovelace.</p>
+  <p></p><p>Developed by Robin Lovelace, Malcolm Morgan.</p>
 </div>
 
 <div class="pkgdown">
diff --git a/reference/od_data_df2.html b/reference/od_data_df2.html
index f645a7e..23c5748 100644
--- a/reference/od_data_df2.html
+++ b/reference/od_data_df2.html
@@ -20,7 +20,7 @@
       </button>
       <span class="navbar-brand">
         <a class="navbar-link" href="../index.html">od</a>
-        <span class="version label label-default" data-toggle="tooltip" data-placement="bottom" title="">0.5.0</span>
+        <span class="version label label-default" data-toggle="tooltip" data-placement="bottom" title="">0.5.1</span>
       </span>
     </div>
 
@@ -95,7 +95,7 @@ <h2>Examples</h2>
 
 
       <footer><div class="copyright">
-  <p></p><p>Developed by Robin Lovelace.</p>
+  <p></p><p>Developed by Robin Lovelace, Malcolm Morgan.</p>
 </div>
 
 <div class="pkgdown">
diff --git a/reference/od_data_network.html b/reference/od_data_network.html
index 3364319..2103a3e 100644
--- a/reference/od_data_network.html
+++ b/reference/od_data_network.html
@@ -17,7 +17,7 @@
       </button>
       <span class="navbar-brand">
         <a class="navbar-link" href="../index.html">od</a>
-        <span class="version label label-default" data-toggle="tooltip" data-placement="bottom" title="">0.5.0</span>
+        <span class="version label label-default" data-toggle="tooltip" data-placement="bottom" title="">0.5.1</span>
       </span>
     </div>
 
@@ -108,7 +108,7 @@ <h2>Examples</h2>
 
 
       <footer><div class="copyright">
-  <p></p><p>Developed by Robin Lovelace.</p>
+  <p></p><p>Developed by Robin Lovelace, Malcolm Morgan.</p>
 </div>
 
 <div class="pkgdown">
diff --git a/reference/od_data_zones.html b/reference/od_data_zones.html
index fe84657..e903e87 100644
--- a/reference/od_data_zones.html
+++ b/reference/od_data_zones.html
@@ -17,7 +17,7 @@
       </button>
       <span class="navbar-brand">
         <a class="navbar-link" href="../index.html">od</a>
-        <span class="version label label-default" data-toggle="tooltip" data-placement="bottom" title="">0.5.0</span>
+        <span class="version label label-default" data-toggle="tooltip" data-placement="bottom" title="">0.5.1</span>
       </span>
     </div>
 
@@ -70,7 +70,7 @@ <h2>Note</h2>
 
 
       <footer><div class="copyright">
-  <p></p><p>Developed by Robin Lovelace.</p>
+  <p></p><p>Developed by Robin Lovelace, Malcolm Morgan.</p>
 </div>
 
 <div class="pkgdown">
diff --git a/reference/od_data_zones_small.html b/reference/od_data_zones_small.html
index 477a490..eccdda0 100644
--- a/reference/od_data_zones_small.html
+++ b/reference/od_data_zones_small.html
@@ -18,7 +18,7 @@
       </button>
       <span class="navbar-brand">
         <a class="navbar-link" href="../index.html">od</a>
-        <span class="version label label-default" data-toggle="tooltip" data-placement="bottom" title="">0.5.0</span>
+        <span class="version label label-default" data-toggle="tooltip" data-placement="bottom" title="">0.5.1</span>
       </span>
     </div>
 
@@ -97,7 +97,7 @@ <h2>Examples</h2>
 
 
       <footer><div class="copyright">
-  <p></p><p>Developed by Robin Lovelace.</p>
+  <p></p><p>Developed by Robin Lovelace, Malcolm Morgan.</p>
 </div>
 
 <div class="pkgdown">
diff --git a/reference/od_disaggregate.html b/reference/od_disaggregate.html
index 23c8e25..dbb0da2 100644
--- a/reference/od_disaggregate.html
+++ b/reference/od_disaggregate.html
@@ -21,7 +21,7 @@
       </button>
       <span class="navbar-brand">
         <a class="navbar-link" href="../index.html">od</a>
-        <span class="version label label-default" data-toggle="tooltip" data-placement="bottom" title="">0.5.0</span>
+        <span class="version label label-default" data-toggle="tooltip" data-placement="bottom" title="">0.5.1</span>
       </span>
     </div>
 
@@ -250,7 +250,7 @@ <h2>Examples</h2>
 
 
       <footer><div class="copyright">
-  <p></p><p>Developed by Robin Lovelace.</p>
+  <p></p><p>Developed by Robin Lovelace, Malcolm Morgan.</p>
 </div>
 
 <div class="pkgdown">
diff --git a/reference/od_filter.html b/reference/od_filter.html
index 08b1dc6..efd50ca 100644
--- a/reference/od_filter.html
+++ b/reference/od_filter.html
@@ -19,7 +19,7 @@
       </button>
       <span class="navbar-brand">
         <a class="navbar-link" href="../index.html">od</a>
-        <span class="version label label-default" data-toggle="tooltip" data-placement="bottom" title="">0.5.0</span>
+        <span class="version label label-default" data-toggle="tooltip" data-placement="bottom" title="">0.5.1</span>
       </span>
     </div>
 
@@ -164,7 +164,7 @@ <h2>Examples</h2>
 
 
       <footer><div class="copyright">
-  <p></p><p>Developed by Robin Lovelace.</p>
+  <p></p><p>Developed by Robin Lovelace, Malcolm Morgan.</p>
 </div>
 
 <div class="pkgdown">
diff --git a/reference/od_id.html b/reference/od_id.html
index 016b7ac..ec11286 100644
--- a/reference/od_id.html
+++ b/reference/od_id.html
@@ -17,7 +17,7 @@
       </button>
       <span class="navbar-brand">
         <a class="navbar-link" href="../index.html">od</a>
-        <span class="version label label-default" data-toggle="tooltip" data-placement="bottom" title="">0.5.0</span>
+        <span class="version label label-default" data-toggle="tooltip" data-placement="bottom" title="">0.5.1</span>
       </span>
     </div>
 
@@ -129,7 +129,7 @@ <h2>Examples</h2>
 
 
       <footer><div class="copyright">
-  <p></p><p>Developed by Robin Lovelace.</p>
+  <p></p><p>Developed by Robin Lovelace, Malcolm Morgan.</p>
 </div>
 
 <div class="pkgdown">
diff --git a/reference/od_id_order.html b/reference/od_id_order.html
index 886cad3..3a54bc6 100644
--- a/reference/od_id_order.html
+++ b/reference/od_id_order.html
@@ -18,7 +18,7 @@
       </button>
       <span class="navbar-brand">
         <a class="navbar-link" href="../index.html">od</a>
-        <span class="version label label-default" data-toggle="tooltip" data-placement="bottom" title="">0.5.0</span>
+        <span class="version label label-default" data-toggle="tooltip" data-placement="bottom" title="">0.5.1</span>
       </span>
     </div>
 
@@ -102,7 +102,7 @@ <h2>Examples</h2>
 
 
       <footer><div class="copyright">
-  <p></p><p>Developed by Robin Lovelace.</p>
+  <p></p><p>Developed by Robin Lovelace, Malcolm Morgan.</p>
 </div>
 
 <div class="pkgdown">
diff --git a/reference/od_interzone.html b/reference/od_interzone.html
index 4d5ad18..5c88f56 100644
--- a/reference/od_interzone.html
+++ b/reference/od_interzone.html
@@ -19,7 +19,7 @@
       </button>
       <span class="navbar-brand">
         <a class="navbar-link" href="../index.html">od</a>
-        <span class="version label label-default" data-toggle="tooltip" data-placement="bottom" title="">0.5.0</span>
+        <span class="version label label-default" data-toggle="tooltip" data-placement="bottom" title="">0.5.1</span>
       </span>
     </div>
 
@@ -95,7 +95,7 @@ <h2>Examples</h2>
 
 
       <footer><div class="copyright">
-  <p></p><p>Developed by Robin Lovelace.</p>
+  <p></p><p>Developed by Robin Lovelace, Malcolm Morgan.</p>
 </div>
 
 <div class="pkgdown">
diff --git a/reference/od_jitter.html b/reference/od_jitter.html
index 9d5396a..c43546e 100644
--- a/reference/od_jitter.html
+++ b/reference/od_jitter.html
@@ -20,7 +20,7 @@
       </button>
       <span class="navbar-brand">
         <a class="navbar-link" href="../index.html">od</a>
-        <span class="version label label-default" data-toggle="tooltip" data-placement="bottom" title="">0.5.0</span>
+        <span class="version label label-default" data-toggle="tooltip" data-placement="bottom" title="">0.5.1</span>
       </span>
     </div>
 
@@ -230,7 +230,7 @@ <h2>Examples</h2>
 
 
       <footer><div class="copyright">
-  <p></p><p>Developed by Robin Lovelace.</p>
+  <p></p><p>Developed by Robin Lovelace, Malcolm Morgan.</p>
 </div>
 
 <div class="pkgdown">
diff --git a/reference/od_oneway.html b/reference/od_oneway.html
index fae1f1c..e9123de 100644
--- a/reference/od_oneway.html
+++ b/reference/od_oneway.html
@@ -17,7 +17,7 @@
       </button>
       <span class="navbar-brand">
         <a class="navbar-link" href="../index.html">od</a>
-        <span class="version label label-default" data-toggle="tooltip" data-placement="bottom" title="">0.5.0</span>
+        <span class="version label label-default" data-toggle="tooltip" data-placement="bottom" title="">0.5.1</span>
       </span>
     </div>
 
@@ -163,7 +163,7 @@ <h2>Examples</h2>
 
 
       <footer><div class="copyright">
-  <p></p><p>Developed by Robin Lovelace.</p>
+  <p></p><p>Developed by Robin Lovelace, Malcolm Morgan.</p>
 </div>
 
 <div class="pkgdown">
diff --git a/reference/od_road_network.html b/reference/od_road_network.html
index 2f43e20..5257f2f 100644
--- a/reference/od_road_network.html
+++ b/reference/od_road_network.html
@@ -17,7 +17,7 @@
       </button>
       <span class="navbar-brand">
         <a class="navbar-link" href="../index.html">od</a>
-        <span class="version label label-default" data-toggle="tooltip" data-placement="bottom" title="">0.5.0</span>
+        <span class="version label label-default" data-toggle="tooltip" data-placement="bottom" title="">0.5.1</span>
       </span>
     </div>
 
@@ -110,7 +110,7 @@ <h2>Examples</h2>
 
 
       <footer><div class="copyright">
-  <p></p><p>Developed by Robin Lovelace.</p>
+  <p></p><p>Developed by Robin Lovelace, Malcolm Morgan.</p>
 </div>
 
 <div class="pkgdown">
diff --git a/reference/od_sample_vertices.html b/reference/od_sample_vertices.html
index 82663e4..a24bffb 100644
--- a/reference/od_sample_vertices.html
+++ b/reference/od_sample_vertices.html
@@ -17,7 +17,7 @@
       </button>
       <span class="navbar-brand">
         <a class="navbar-link" href="../index.html">od</a>
-        <span class="version label label-default" data-toggle="tooltip" data-placement="bottom" title="">0.5.0</span>
+        <span class="version label label-default" data-toggle="tooltip" data-placement="bottom" title="">0.5.1</span>
       </span>
     </div>
 
@@ -91,7 +91,7 @@ <h2>Examples</h2>
 
 
       <footer><div class="copyright">
-  <p></p><p>Developed by Robin Lovelace.</p>
+  <p></p><p>Developed by Robin Lovelace, Malcolm Morgan.</p>
 </div>
 
 <div class="pkgdown">
diff --git a/reference/od_to_network.html b/reference/od_to_network.html
index 12f76be..3826198 100644
--- a/reference/od_to_network.html
+++ b/reference/od_to_network.html
@@ -17,7 +17,7 @@
       </button>
       <span class="navbar-brand">
         <a class="navbar-link" href="../index.html">od</a>
-        <span class="version label label-default" data-toggle="tooltip" data-placement="bottom" title="">0.5.0</span>
+        <span class="version label label-default" data-toggle="tooltip" data-placement="bottom" title="">0.5.1</span>
       </span>
     </div>
 
@@ -165,7 +165,7 @@ <h2>Examples</h2>
 
 
       <footer><div class="copyright">
-  <p></p><p>Developed by Robin Lovelace.</p>
+  <p></p><p>Developed by Robin Lovelace, Malcolm Morgan.</p>
 </div>
 
 <div class="pkgdown">
diff --git a/reference/od_to_odmatrix.html b/reference/od_to_odmatrix.html
index 55da78b..cff2f50 100644
--- a/reference/od_to_odmatrix.html
+++ b/reference/od_to_odmatrix.html
@@ -22,7 +22,7 @@
       </button>
       <span class="navbar-brand">
         <a class="navbar-link" href="../index.html">od</a>
-        <span class="version label label-default" data-toggle="tooltip" data-placement="bottom" title="">0.5.0</span>
+        <span class="version label label-default" data-toggle="tooltip" data-placement="bottom" title="">0.5.1</span>
       </span>
     </div>
 
@@ -119,7 +119,7 @@ <h2>Examples</h2>
 
 
       <footer><div class="copyright">
-  <p></p><p>Developed by Robin Lovelace.</p>
+  <p></p><p>Developed by Robin Lovelace, Malcolm Morgan.</p>
 </div>
 
 <div class="pkgdown">
diff --git a/reference/od_to_sf.html b/reference/od_to_sf.html
index 8dfa71a..ac896df 100644
--- a/reference/od_to_sf.html
+++ b/reference/od_to_sf.html
@@ -17,7 +17,7 @@
       </button>
       <span class="navbar-brand">
         <a class="navbar-link" href="../index.html">od</a>
-        <span class="version label label-default" data-toggle="tooltip" data-placement="bottom" title="">0.5.0</span>
+        <span class="version label label-default" data-toggle="tooltip" data-placement="bottom" title="">0.5.1</span>
       </span>
     </div>
 
@@ -173,7 +173,7 @@ <h2>Examples</h2>
 
 
       <footer><div class="copyright">
-  <p></p><p>Developed by Robin Lovelace.</p>
+  <p></p><p>Developed by Robin Lovelace, Malcolm Morgan.</p>
 </div>
 
 <div class="pkgdown">
diff --git a/reference/odc_to_sf.html b/reference/odc_to_sf.html
index b38ad11..79b8df7 100644
--- a/reference/odc_to_sf.html
+++ b/reference/odc_to_sf.html
@@ -17,7 +17,7 @@
       </button>
       <span class="navbar-brand">
         <a class="navbar-link" href="../index.html">od</a>
-        <span class="version label label-default" data-toggle="tooltip" data-placement="bottom" title="">0.5.0</span>
+        <span class="version label label-default" data-toggle="tooltip" data-placement="bottom" title="">0.5.1</span>
       </span>
     </div>
 
@@ -115,7 +115,7 @@ <h2>Examples</h2>
 
 
       <footer><div class="copyright">
-  <p></p><p>Developed by Robin Lovelace.</p>
+  <p></p><p>Developed by Robin Lovelace, Malcolm Morgan.</p>
 </div>
 
 <div class="pkgdown">
diff --git a/reference/odc_to_sfc.html b/reference/odc_to_sfc.html
index 09265a0..1483405 100644
--- a/reference/odc_to_sfc.html
+++ b/reference/odc_to_sfc.html
@@ -17,7 +17,7 @@
       </button>
       <span class="navbar-brand">
         <a class="navbar-link" href="../index.html">od</a>
-        <span class="version label label-default" data-toggle="tooltip" data-placement="bottom" title="">0.5.0</span>
+        <span class="version label label-default" data-toggle="tooltip" data-placement="bottom" title="">0.5.1</span>
       </span>
     </div>
 
@@ -103,7 +103,7 @@ <h2>Examples</h2>
 
 
       <footer><div class="copyright">
-  <p></p><p>Developed by Robin Lovelace.</p>
+  <p></p><p>Developed by Robin Lovelace, Malcolm Morgan.</p>
 </div>
 
 <div class="pkgdown">
diff --git a/reference/odmatrix_to_od.html b/reference/odmatrix_to_od.html
index 1957b6e..85be926 100644
--- a/reference/odmatrix_to_od.html
+++ b/reference/odmatrix_to_od.html
@@ -21,7 +21,7 @@
       </button>
       <span class="navbar-brand">
         <a class="navbar-link" href="../index.html">od</a>
-        <span class="version label label-default" data-toggle="tooltip" data-placement="bottom" title="">0.5.0</span>
+        <span class="version label label-default" data-toggle="tooltip" data-placement="bottom" title="">0.5.1</span>
       </span>
     </div>
 
@@ -128,7 +128,7 @@ <h2>Examples</h2>
 
 
       <footer><div class="copyright">
-  <p></p><p>Developed by Robin Lovelace.</p>
+  <p></p><p>Developed by Robin Lovelace, Malcolm Morgan.</p>
 </div>
 
 <div class="pkgdown">
diff --git a/reference/points_to_od-1.png b/reference/points_to_od-1.png
index 7fbc4b4..17e3e43 100644
Binary files a/reference/points_to_od-1.png and b/reference/points_to_od-1.png differ
diff --git a/reference/points_to_od-2.png b/reference/points_to_od-2.png
index 1d17baa..e62fb82 100644
Binary files a/reference/points_to_od-2.png and b/reference/points_to_od-2.png differ
diff --git a/reference/points_to_od.html b/reference/points_to_od.html
index 6f03b47..d5cbd07 100644
--- a/reference/points_to_od.html
+++ b/reference/points_to_od.html
@@ -19,7 +19,7 @@
       </button>
       <span class="navbar-brand">
         <a class="navbar-link" href="../index.html">od</a>
-        <span class="version label label-default" data-toggle="tooltip" data-placement="bottom" title="">0.5.0</span>
+        <span class="version label label-default" data-toggle="tooltip" data-placement="bottom" title="">0.5.1</span>
       </span>
     </div>
 
@@ -131,82 +131,60 @@ <h2>Details</h2>
     <div id="ref-examples">
     <h2>Examples</h2>
     <div class="sourceCode"><pre class="sourceCode r"><code><span class="r-in"><span><span class="kw"><a href="https://rdrr.io/r/base/library.html" class="external-link">library</a></span><span class="op">(</span><span class="va"><a href="https://r-spatial.github.io/sf/" class="external-link">sf</a></span><span class="op">)</span></span></span>
-<span class="r-in"><span><span class="va">p</span> <span class="op">=</span> <span class="va">od_data_centroids</span><span class="op">[</span><span class="fl">1</span><span class="op">:</span><span class="fl">3</span>, <span class="op">]</span></span></span>
+<span class="r-in"><span><span class="va">p</span> <span class="op">=</span> <span class="va">od_data_centroids</span><span class="op">[</span><span class="fl">1</span><span class="op">:</span><span class="fl">2</span>, <span class="op">]</span></span></span>
 <span class="r-in"><span><span class="fu">points_to_od</span><span class="op">(</span><span class="va">p</span><span class="op">)</span></span></span>
-<span class="r-out co"><span class="r-pr">#&gt;</span>          Var1      Var2        ox       oy        dx       dy</span>
+<span class="r-out co"><span class="r-pr">#&gt;</span>             O         D        ox       oy        dx       dy</span>
 <span class="r-out co"><span class="r-pr">#&gt;</span> 1   E02002407 E02002407 -1.609934 53.79079 -1.609934 53.79079</span>
-<span class="r-out co"><span class="r-pr">#&gt;</span> 2   E02002336 E02002407 -1.624630 53.88605 -1.609934 53.79079</span>
-<span class="r-out co"><span class="r-pr">#&gt;</span> 3   E02002353 E02002407 -1.518058 53.84066 -1.609934 53.79079</span>
 <span class="r-out co"><span class="r-pr">#&gt;</span> 1.1 E02002407 E02002336 -1.609934 53.79079 -1.624630 53.88605</span>
+<span class="r-out co"><span class="r-pr">#&gt;</span> 2   E02002336 E02002407 -1.624630 53.88605 -1.609934 53.79079</span>
 <span class="r-out co"><span class="r-pr">#&gt;</span> 2.1 E02002336 E02002336 -1.624630 53.88605 -1.624630 53.88605</span>
-<span class="r-out co"><span class="r-pr">#&gt;</span> 3.1 E02002353 E02002336 -1.518058 53.84066 -1.624630 53.88605</span>
-<span class="r-out co"><span class="r-pr">#&gt;</span> 1.2 E02002407 E02002353 -1.609934 53.79079 -1.518058 53.84066</span>
-<span class="r-out co"><span class="r-pr">#&gt;</span> 2.2 E02002336 E02002353 -1.624630 53.88605 -1.518058 53.84066</span>
-<span class="r-out co"><span class="r-pr">#&gt;</span> 3.2 E02002353 E02002353 -1.518058 53.84066 -1.518058 53.84066</span>
 <span class="r-in"><span><span class="fu">points_to_od</span><span class="op">(</span><span class="va">p</span>, ids_only <span class="op">=</span> <span class="cn">TRUE</span><span class="op">)</span></span></span>
-<span class="r-out co"><span class="r-pr">#&gt;</span>        Var1      Var2</span>
+<span class="r-out co"><span class="r-pr">#&gt;</span>           O         D</span>
 <span class="r-out co"><span class="r-pr">#&gt;</span> 1 E02002407 E02002407</span>
-<span class="r-out co"><span class="r-pr">#&gt;</span> 2 E02002336 E02002407</span>
-<span class="r-out co"><span class="r-pr">#&gt;</span> 3 E02002353 E02002407</span>
-<span class="r-out co"><span class="r-pr">#&gt;</span> 4 E02002407 E02002336</span>
-<span class="r-out co"><span class="r-pr">#&gt;</span> 5 E02002336 E02002336</span>
-<span class="r-out co"><span class="r-pr">#&gt;</span> 6 E02002353 E02002336</span>
-<span class="r-out co"><span class="r-pr">#&gt;</span> 7 E02002407 E02002353</span>
-<span class="r-out co"><span class="r-pr">#&gt;</span> 8 E02002336 E02002353</span>
-<span class="r-out co"><span class="r-pr">#&gt;</span> 9 E02002353 E02002353</span>
+<span class="r-out co"><span class="r-pr">#&gt;</span> 2 E02002407 E02002336</span>
+<span class="r-out co"><span class="r-pr">#&gt;</span> 3 E02002336 E02002407</span>
+<span class="r-out co"><span class="r-pr">#&gt;</span> 4 E02002336 E02002336</span>
 <span class="r-in"><span><span class="op">(</span><span class="va">l</span> <span class="op">=</span> <span class="fu">points_to_odl</span><span class="op">(</span><span class="va">p</span>, interzone_only <span class="op">=</span> <span class="cn">TRUE</span><span class="op">)</span><span class="op">)</span></span></span>
-<span class="r-out co"><span class="r-pr">#&gt;</span> Simple feature collection with 6 features and 2 fields</span>
+<span class="r-out co"><span class="r-pr">#&gt;</span> Simple feature collection with 2 features and 2 fields</span>
 <span class="r-out co"><span class="r-pr">#&gt;</span> Geometry type: LINESTRING</span>
 <span class="r-out co"><span class="r-pr">#&gt;</span> Dimension:     XY</span>
-<span class="r-out co"><span class="r-pr">#&gt;</span> Bounding box:  xmin: -1.62463 ymin: 53.79079 xmax: -1.518058 ymax: 53.88605</span>
+<span class="r-out co"><span class="r-pr">#&gt;</span> Bounding box:  xmin: -1.62463 ymin: 53.79079 xmax: -1.609934 ymax: 53.88605</span>
 <span class="r-out co"><span class="r-pr">#&gt;</span> Geodetic CRS:  WGS 84</span>
-<span class="r-out co"><span class="r-pr">#&gt;</span>        Var1      Var2                       geometry</span>
-<span class="r-out co"><span class="r-pr">#&gt;</span> 1 E02002336 E02002407 LINESTRING (-1.62463 53.886...</span>
-<span class="r-out co"><span class="r-pr">#&gt;</span> 2 E02002353 E02002407 LINESTRING (-1.518058 53.84...</span>
-<span class="r-out co"><span class="r-pr">#&gt;</span> 3 E02002407 E02002336 LINESTRING (-1.609934 53.79...</span>
-<span class="r-out co"><span class="r-pr">#&gt;</span> 4 E02002353 E02002336 LINESTRING (-1.518058 53.84...</span>
-<span class="r-out co"><span class="r-pr">#&gt;</span> 5 E02002407 E02002353 LINESTRING (-1.609934 53.79...</span>
-<span class="r-out co"><span class="r-pr">#&gt;</span> 6 E02002336 E02002353 LINESTRING (-1.62463 53.886...</span>
+<span class="r-out co"><span class="r-pr">#&gt;</span>           O         D                       geometry</span>
+<span class="r-out co"><span class="r-pr">#&gt;</span> 1 E02002407 E02002336 LINESTRING (-1.609934 53.79...</span>
+<span class="r-out co"><span class="r-pr">#&gt;</span> 2 E02002336 E02002407 LINESTRING (-1.62463 53.886...</span>
 <span class="r-in"><span><span class="fu"><a href="https://rdrr.io/r/graphics/plot.default.html" class="external-link">plot</a></span><span class="op">(</span><span class="va">l</span><span class="op">)</span></span></span>
 <span class="r-plt img"><img src="points_to_od-1.png" alt="" width="700" height="433"></span>
 <span class="r-in"><span><span class="fu">points_to_od</span><span class="op">(</span><span class="va">od_data_centroids</span><span class="op">[</span><span class="fl">1</span><span class="op">:</span><span class="fl">2</span>, <span class="op">]</span>, <span class="va">od_data_centroids</span><span class="op">[</span><span class="fl">3</span>, <span class="op">]</span><span class="op">)</span></span></span>
-<span class="r-out co"><span class="r-pr">#&gt;</span>        Var1      Var2        ox       oy        dx       dy</span>
+<span class="r-out co"><span class="r-pr">#&gt;</span>           O         D        ox       oy        dx       dy</span>
 <span class="r-out co"><span class="r-pr">#&gt;</span> 1 E02002407 E02002353 -1.609934 53.79079 -1.518058 53.84066</span>
 <span class="r-out co"><span class="r-pr">#&gt;</span> 2 E02002336 E02002353 -1.624630 53.88605 -1.518058 53.84066</span>
 <span class="r-in"><span><span class="va">l</span> <span class="op">=</span> <span class="fu">points_to_odl</span><span class="op">(</span><span class="va">od_data_centroids</span><span class="op">[</span><span class="fl">1</span><span class="op">:</span><span class="fl">2</span>, <span class="op">]</span>, <span class="va">od_data_centroids</span><span class="op">[</span><span class="fl">3</span>, <span class="op">]</span><span class="op">)</span></span></span>
 <span class="r-in"><span><span class="fu"><a href="https://rdrr.io/r/graphics/plot.default.html" class="external-link">plot</a></span><span class="op">(</span><span class="va">l</span><span class="op">)</span></span></span>
 <span class="r-plt img"><img src="points_to_od-2.png" alt="" width="700" height="433"></span>
 <span class="r-in"><span><span class="op">(</span><span class="va">od</span> <span class="op">=</span> <span class="fu">points_to_od</span><span class="op">(</span><span class="va">p</span>, interzone_only <span class="op">=</span> <span class="cn">TRUE</span><span class="op">)</span><span class="op">)</span></span></span>
-<span class="r-out co"><span class="r-pr">#&gt;</span>        Var1      Var2        ox       oy        dx       dy</span>
-<span class="r-out co"><span class="r-pr">#&gt;</span> 2 E02002336 E02002407 -1.624630 53.88605 -1.609934 53.79079</span>
-<span class="r-out co"><span class="r-pr">#&gt;</span> 3 E02002353 E02002407 -1.518058 53.84066 -1.609934 53.79079</span>
-<span class="r-out co"><span class="r-pr">#&gt;</span> 4 E02002407 E02002336 -1.609934 53.79079 -1.624630 53.88605</span>
-<span class="r-out co"><span class="r-pr">#&gt;</span> 6 E02002353 E02002336 -1.518058 53.84066 -1.624630 53.88605</span>
-<span class="r-out co"><span class="r-pr">#&gt;</span> 7 E02002407 E02002353 -1.609934 53.79079 -1.518058 53.84066</span>
-<span class="r-out co"><span class="r-pr">#&gt;</span> 8 E02002336 E02002353 -1.624630 53.88605 -1.518058 53.84066</span>
+<span class="r-out co"><span class="r-pr">#&gt;</span>           O         D        ox       oy        dx       dy</span>
+<span class="r-out co"><span class="r-pr">#&gt;</span> 2 E02002407 E02002336 -1.609934 53.79079 -1.624630 53.88605</span>
+<span class="r-out co"><span class="r-pr">#&gt;</span> 3 E02002336 E02002407 -1.624630 53.88605 -1.609934 53.79079</span>
 <span class="r-in"><span><span class="va">l2</span> <span class="op">=</span> <span class="fu"><a href="od_to_sf.html">od_to_sf</a></span><span class="op">(</span><span class="va">od</span>, <span class="va">od_data_centroids</span><span class="op">)</span></span></span>
 <span class="r-msg co"><span class="r-pr">#&gt;</span> 0 origins with no match in zone ids</span>
 <span class="r-msg co"><span class="r-pr">#&gt;</span> 0 destinations with no match in zone ids</span>
 <span class="r-msg co"><span class="r-pr">#&gt;</span>  points not in od data removed.</span>
 <span class="r-in"><span><span class="va">l2</span><span class="op">$</span><span class="va">v</span> <span class="op">=</span> <span class="fl">1</span></span></span>
 <span class="r-in"><span><span class="op">(</span><span class="va">l2_oneway</span> <span class="op">=</span> <span class="fu"><a href="od_oneway.html">od_oneway</a></span><span class="op">(</span><span class="va">l2</span><span class="op">)</span><span class="op">)</span></span></span>
-<span class="r-out co"><span class="r-pr">#&gt;</span> Simple feature collection with 3 features and 7 fields</span>
+<span class="r-out co"><span class="r-pr">#&gt;</span> Simple feature collection with 1 feature and 7 fields</span>
 <span class="r-out co"><span class="r-pr">#&gt;</span> Attribute-geometry relationships: aggregate (5), identity (2)</span>
 <span class="r-out co"><span class="r-pr">#&gt;</span> Geometry type: LINESTRING</span>
 <span class="r-out co"><span class="r-pr">#&gt;</span> Dimension:     XY</span>
-<span class="r-out co"><span class="r-pr">#&gt;</span> Bounding box:  xmin: -1.62463 ymin: 53.79079 xmax: -1.518058 ymax: 53.88605</span>
+<span class="r-out co"><span class="r-pr">#&gt;</span> Bounding box:  xmin: -1.62463 ymin: 53.79079 xmax: -1.609934 ymax: 53.88605</span>
 <span class="r-out co"><span class="r-pr">#&gt;</span> Geodetic CRS:  WGS 84</span>
 <span class="r-out co"><span class="r-pr">#&gt;</span>           o         d        ox       oy        dx       dy v</span>
-<span class="r-out co"><span class="r-pr">#&gt;</span> 1 E02002336 E02002353 -3.142688 107.7267 -3.142688 107.7267 2</span>
-<span class="r-out co"><span class="r-pr">#&gt;</span> 2 E02002336 E02002407 -3.234564 107.6768 -3.234564 107.6768 2</span>
-<span class="r-out co"><span class="r-pr">#&gt;</span> 3 E02002353 E02002407 -3.127992 107.6314 -3.127992 107.6314 2</span>
+<span class="r-out co"><span class="r-pr">#&gt;</span> 1 E02002336 E02002407 -3.234564 107.6768 -3.234564 107.6768 2</span>
 <span class="r-out co"><span class="r-pr">#&gt;</span>                         geometry</span>
-<span class="r-out co"><span class="r-pr">#&gt;</span> 1 LINESTRING (-1.518058 53.84...</span>
-<span class="r-out co"><span class="r-pr">#&gt;</span> 2 LINESTRING (-1.62463 53.886...</span>
-<span class="r-out co"><span class="r-pr">#&gt;</span> 3 LINESTRING (-1.518058 53.84...</span>
+<span class="r-out co"><span class="r-pr">#&gt;</span> 1 LINESTRING (-1.609934 53.79...</span>
 <span class="r-in"><span><span class="fu">sf</span><span class="fu">::</span><span class="fu"><a href="https://r-spatial.github.io/sf/reference/geos_measures.html" class="external-link">st_length</a></span><span class="op">(</span><span class="va">l2</span><span class="op">)</span></span></span>
 <span class="r-out co"><span class="r-pr">#&gt;</span> Units: [m]</span>
-<span class="r-out co"><span class="r-pr">#&gt;</span> [1] 10635.993  8192.858 10635.993  8620.398  8192.858  8620.398</span>
+<span class="r-out co"><span class="r-pr">#&gt;</span> [1] 10635.99 10635.99</span>
 <span class="r-in"><span><span class="co"># With max_dist:</span></span></span>
 <span class="r-in"><span><span class="kw">if</span> <span class="op">(</span><span class="kw"><a href="https://rdrr.io/r/base/library.html" class="external-link">require</a></span><span class="op">(</span><span class="va"><a href="https://michaeldorman.github.io/nngeo/" class="external-link">nngeo</a></span><span class="op">)</span><span class="op">)</span> <span class="op">{</span></span></span>
 <span class="r-in"><span>  <span class="op">(</span><span class="va">l3</span> <span class="op">=</span> <span class="fu">points_to_odl</span><span class="op">(</span><span class="va">p</span>, max_dist <span class="op">=</span> <span class="fl">10000</span><span class="op">)</span><span class="op">)</span></span></span>
@@ -215,7 +193,7 @@ <h2>Examples</h2>
 <span class="r-msg co"><span class="r-pr">#&gt;</span> Loading required package: nngeo</span>
 <span class="r-msg co"><span class="r-pr">#&gt;</span> lon-lat points</span>
 <span class="r-out co"><span class="r-pr">#&gt;</span> Units: [m]</span>
-<span class="r-out co"><span class="r-pr">#&gt;</span> [1]    0.000 8192.858    0.000 8620.398    0.000 8192.858 8620.398</span>
+<span class="r-out co"><span class="r-pr">#&gt;</span> [1] 0 0</span>
 </code></pre></div>
     </div>
   </div>
@@ -226,7 +204,7 @@ <h2>Examples</h2>
 
 
       <footer><div class="copyright">
-  <p></p><p>Developed by Robin Lovelace.</p>
+  <p></p><p>Developed by Robin Lovelace, Malcolm Morgan.</p>
 </div>
 
 <div class="pkgdown">
diff --git a/reference/sfc_point_to_matrix.html b/reference/sfc_point_to_matrix.html
index 084817d..0748571 100644
--- a/reference/sfc_point_to_matrix.html
+++ b/reference/sfc_point_to_matrix.html
@@ -18,7 +18,7 @@
       </button>
       <span class="navbar-brand">
         <a class="navbar-link" href="../index.html">od</a>
-        <span class="version label label-default" data-toggle="tooltip" data-placement="bottom" title="">0.5.0</span>
+        <span class="version label label-default" data-toggle="tooltip" data-placement="bottom" title="">0.5.1</span>
       </span>
     </div>
 
@@ -98,7 +98,7 @@ <h2>Examples</h2>
 
 
       <footer><div class="copyright">
-  <p></p><p>Developed by Robin Lovelace.</p>
+  <p></p><p>Developed by Robin Lovelace, Malcolm Morgan.</p>
 </div>
 
 <div class="pkgdown">