add total-dist metric to rtcm in influxdb because influxdb can't do the simplest calculations..

influxdb.md

@@ -65,6 +65,33 @@ band on which this data was received.
    * oldx,oldy,oldz: ECEF coordinates according to old ephemeris at new t0e
    * iod, oldiod: new and old IOD
 
+RTCM SSR corrections:
+
+These measurements are tagged by gnssid, sv
+
+  * rtcm-eph-correction:
+    * iod: iod this correction corresponds to
+    * radial: radial error (millimeters)
+    * along: error along track
+    * cross: error across track
+    * dradial: velocity error in millimeters/second
+    * dalong: along track velocity error
+    * dcross: across track velocity error
+    * ssr-iod
+    * ssr-provider
+    * ssr-solution
+    * total-dist
+    * tow
+    * udi
+  * rtcm-clock-correction
+    * dclock0
+    * dclock1
+    * dclock2
+    * ssr-iod
+    * ssr-provider
+    * tow
+    * udi
+
 Observer measurements:
 
  * fix

navparse.cc

@@ -2201,7 +2201,8 @@ try
                        {"ssr-provider", rm.ssrProvider},
                        {"ssr-solution", rm.ssrSolution},
                        {"tow", rm.sow},
-                         {"udi", rm.udi}},
+                         {"udi", rm.udi},
+                           {"total-dist", sqrt(ed.radial*ed.radial + ed.along*ed.along + ed.cross*ed.cross)}},
             nmm.localutcseconds(),
             nmm.sourceid());