undropped caves code -> GPX

core/models/survex.py

@@ -113,7 +113,13 @@ class SurvexStation(models.Model):
             
         return diff_str, ref
  
-        
+    def gpx_location(s): # s == self
+        # <wpt lon="13.82093593" lat="47.69501184"><ele>1857.90</ele><name>tunnocks</name></wpt>
+        latitude, longitude = utmToLatLng(33, s.x, s.y, northernHemisphere=True)
+        if s.name:
+            return f'<wpt lon="{longitude:0.8f}" lat="{latitude:0.8f}"><ele>{s.z:0.0f}</ele><name>{s.name[5:]}</name></wpt>\n'
+        else:
+            return ""        
     
 
 def utmToLatLng(zone, easting, northing, northernHemisphere=True): # move this to utils.py ?