GPS on Bench Marks 2018
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GPS on Bench Marks
Final Update: October 2, 2018
Welcome to the GPS on Bench Marks 2018 Web Map. This provides a view of the priority marks that have been selected to help improve GEOID18 and the Transformation Tool that will be created for NAPGD2022.
Geographic Location Search
Search by location or decimal coordinates (lat/lon). An X is placed at the top result with the specified km buffer. You can also place an X by right clicking at a location on the map.
Click magnifying glass on the map to search by PID
Symbology
Priority A Mark with n observation(s) requested
Priority B Mark with n observation(s) requested
Meets current criteria, no more observations needed
Mark reported unfound or not GPSable.
Priority mark clusters with # listed.
Notice:
Boundary representation is not necessarily authoritative
Help
Priority A Marks
Priority A are marks we need to either fill gaps or resolve conflicting existing information. These bench marks would provide the most value to improve geoid modeling with new observations.
Priority B Marks
Priority B are marks where we need to confirm the relationships suggested by other data in the area... We could build the model without them but we'll have more confidence in the geoid modeling if we have more data.
Help Notes:
- Mouse wheel and buttons on top left of menu will zoom in and out of map
- Hover over clusters to see extent of the cluster marks. Example with 487 marks below.
- Click cluster to zoom in to larger scale of cluster area
- Zoom level 9 is where there is no more clustering
- Click markers to see information
- Click on the search to search for a particular PID
- Search for a location using left menu top icon
* Right click on map for context menu