Configurable GPS coordinate format on companion display (DD/DMS/DDM/UTM/MGRS)

[mikeheffler]

The companion device GPS page displays position as decimal degrees only (e.g. 39.7xxxx -104.9xxx).

I’m interested in a user-configurable GPS format setting so the on-device display can show position in any of these common coordinate systems:
• Decimal Degrees (DD)
• Degrees, Minutes, Seconds (DMS)
• Degrees Decimal Minutes (DDM)
• Universal Transverse Mercator (UTM)
• Military Grid Reference System (MGRS)

Format could be cycled with the up/down keys on the GPS page (currently unused on home screens) or a long press of the enter button.

While decimal degrees is convenient for software, it’s uncommon in field use. Search and Rescue and emergency response teams commonly use UTM and/or MGRS in the US and NATO aligned countries. Land navigation with paper maps is easier with UTM as USGS topo maps and most printed backcountry/orienteering maps overlay UTM grids. Reporting position is easier and less error-prone with UTM/MGRS than DD. Aviation, marine, and amateur radio communities often use DMS or DDM.

This is most relevant for users running Meshcore in tactical, SAR, or backcountry contexts, especially when the companion device is the primary “what’s my position right now” readout when a phone is stowed.

Would a feature like this be of interest to the community? I think a solution would be relatively simple and doable. I’d be happy to work on a pull request if there’s interest. Also please let me know if this has been addressed previously (couldn’t find anything in searching).