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Why is my data not transforming to WGS84 as expected?

Question asked by rblash on Mar 6, 2019
Latest reply on Mar 7, 2019 by rblash

I have data in NAD 83 State Plane NJ ft which was published as a hosted feature service from ArcGIS Pro 2.2. Before publishing I specified the transformation to WGS84 (NAD_1983_To_WGS_1984_5)


I am passing line centroid coordinates from that HFS (in WGS84) to a Survey123 survey. The points in the Survey123 hosted feature service (which is in WGS84) do not overlay the line as expected when viewed in ArcGIS Online (with an Esri basemap). There is a shift of ~3 ft.

 

If I bring all of the data into Pro and set the transformation to None everything lines up. However, when I set the above transformation in the Pro map I see the shift. I'm starting to suspect the centroid coordinates are to blame. I need to do more testing to see if I can narrow it down. For now, I'm asking here to see if anyone has encountered this before.

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