Parse DTM and display some info if it is non-standard

[gdt]

We have observed receivers that operate in strange datums, when the user has not configured them to do so (.e.g. PZ-90 in the US). This is a receiver bug, not a GPSTest bug, and thus this is a feature request for GPSTest to help the user understand what their receiver is doing.

While a user can log data and go read NMEA, that requires effort. It would be great if GPSTest would observe DTM sentences and parse them, and if a non-standard configuration is observed, display something to the user. By non-standard, I mean anything other than "just WGS84, period, no offsets". What could be displayed might just be DTM in red, to give a clue that the raw NMEA should be looked at, or it could be more, like "DTM: PZ-90". (That's P90->PE90 from NMEA, and PZ-90 because that's what EPSG calls it.)

Perhaps, the red DTM could be clickable, and go to a screen with the full contents including transforming the minutes E/N shift into cm. But really, just seeing a '"your receiver is operating in a non-standard datum" warning would be a huge step forward.

[barbeau]

Thanks @gdt, this is a good idea. I've added to the future "Device info" screen that I have planned in #313 (comment), which will also show other common data issues. I'm going to close this issue as a duplicate now that I have this captured in #313 (comment).

[Bug725]

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On Tue, Jun 22, 2021, 1:43 PM Sean Barbeau ***@***.***> wrote: Closed #527 <#527>. — You are receiving this because you are subscribed to this thread. Reply to this email directly, view it on GitHub <#527 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/ALSQSURNI2WAK6BZRHD335TTUDDSZANCNFSM47CHR6RQ> .