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Mapping and Locating Issues

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3 weeks ago
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MichaelFettkether
Emerging Contributor

I'm running into a bit of trouble with mapping and locating. I gathered all the data with an old Trimble GeoXH 6000 series with 4" accuracy. Used Pathfinder to load the data and convert it to shapefiles and loaded into ArcGIS Pro (Desktop). That data was loaded into ArcGIS Online and used field maps to view that data. My desktop computer failed and I lost access to the Pathfinder software and upgraded to a Leica FLX100 Plus. Using Field Maps I open my maps and connect the Leica. Its connected and says everything is at a 2cm accuracy. Now here is my trouble. The data from my field maps does not align with the new Leica. Its around 3 to 4 feet off. Not sure what to do now. I understand there will likely be some discrepancies, but all the data offset roughly that same distance and direction??? Is this a Coordinate System issue? With the old GeoXH I believe it was captured with one version and converted to Iowa North State Plane when loaded to a shapefile. I'm at a lose of what to do or check. Can someone point me in the right direction?

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JessicaMcCann
Esri Contributor

I highly recommend the book “Lining Up Data in ArcGIS: A Guide to Map Projections” by Margaret Maher (2013) for anyone working with Coordinate Systems. You might be able to find it at your local library. It offers valuable insights that could be helpful for your investigations.

 

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MichaelFettkether
Emerging Contributor

Investigating this further.

Old GPS (Trimble GeoXH) is set to:
System: US State Plane 1983
Zone: Iowa North 1401
Datum NAD 1983 (Conus)

New GPS (Leica Zeno FLX100 Plus)
GCS WGS 1984

The offset appears to be 1 meters.

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