topic Re: New Hampshire State Plain plotting in Calgary in ArcGIS Pro Questions

New Hampshire State Plain plotting in Calgary

KeithJ — Wed, 12 Feb 2025 19:10:46 GMT

As you can see in the 1st pic, our NH data is plotting in Calgary. We are currently transitioning from traditional to branch versioned data and plotted everything in NAD 1983 NH-2011. All the data in our EGDB is in NH State Plain, the map is set, I've rechecked everything several times, but yet the data is still plotting 3000 miles away. We're only interested in our data so, in general, this won't be a large area we cover.

Anyone see any simple fixes or perhaps should we try another coordinate system? I would be happy to provide additional details.

Re: New Hampshire State Plain plotting in Calgary

DanPatterson — Wed, 12 Feb 2025 19:17:13 GMT

barring some 51st state thing, can you report the central meridian of the data sets?

Re: New Hampshire State Plain plotting in Calgary

KeithJ — Wed, 12 Feb 2025 19:22:19 GMT

The central meridian is correct for NH. Do you mean this system is semi-retired? Do you recommend another?

Re: New Hampshire State Plain plotting in Calgary

DanPatterson — Wed, 12 Feb 2025 22:57:40 GMT

semi-retired

my signature

Your central meridian etc all look correct, so if the coordinates fall within the expected range then either the data have been defined incorrectly (probably not) or the map is not correct.

I would add the data to a new map without any basemap or anything to complicate things.

The first sets of data define the coordinate system of the map, so if the long/lat values are appropriate for your locale then there is nothing wrong with the data.

If the long/lat values are "off", then it has been defined incorrectly.

Have a look at this as well

Recalculate Feature Class Extent (Data Management)—ArcGIS Pro | Documentation