Add stats for way node distribution

1 files changed, 19 insertions, 0 deletions

diff --git a/tagstats/statistics_handler.hpp b/tagstats/statistics_handler.hpp
index ad5c91a..04801ea 100644
--- a/tagstats/statistics_handler.hpp
+++ b/tagstats/statistics_handler.hpp
@@ -47,6 +47,9 @@ public:
             "ways",
             "way_tags",
             "way_nodes",
+            "way_nodes_consecutive",
+            "way_nodes_within_127",
+            "way_nodes_within_32767",
             "max_way_id",
             "max_tags_on_way",
             "max_nodes_on_way",
@@ -119,6 +122,19 @@ public:
             m_stats.max_way_version = m_version;
         }
         m_stats.sum_way_version += m_version;
+
+        osm_object_id_t ref = 0;
+        BOOST_FOREACH(const Osmium::OSM::WayNode& wn, way->nodes()) {
+            osm_object_id_t diff = wn.ref() - ref;
+            if (diff == 1) {
+                ++m_stats.way_nodes_consecutive;
+            } else if (diff <= 127) { // 2^7-1
+                ++m_stats.way_nodes_within_127;
+            } else if (diff <= 32767) { // 2^15-1
+                ++m_stats.way_nodes_within_32767;
+            }
+            ref = wn.ref();
+        }
     }
 
     void relation(const shared_ptr<Osmium::OSM::Relation const>& relation) {
@@ -186,6 +202,9 @@ private:
         uint64_t ways;
         uint64_t way_tags;
         uint64_t way_nodes;
+        uint64_t way_nodes_consecutive;
+        uint64_t way_nodes_within_127;
+        uint64_t way_nodes_within_32767;
         uint64_t max_way_id;
         uint64_t max_tags_on_way;
         uint64_t max_nodes_on_way;