topic convert radians to decimal degrees in Esri Tutorials Questions

convert radians to decimal degrees

CelesteWalz — Wed, 12 Apr 2017 16:22:25 GMT

I Have an export from an app that gives me location in radians. Is there a simple way to convert to decimal degrees? I would like to be able to import into arcmap.

Sample:

TimeStamp	Lat	Long	Elevation	Speed
4/12/17 12:54:40	-1.6877674	0.5775370	184	2.6
4/12/17 12:54:50	-1.6877689	0.5775332	182	2.3
4/12/17 12:55:00	-1.6877694	0.5775296	181	2.3
4/12/17 12:55:10	-1.6877685	0.5775274	182	0.0

Re: convert radians to decimal degrees

DanPatterson_Retired — Wed, 12 Apr 2017 16:26:26 GMT

math.degrees(-1.6877674)
-96.70194881976822

In the field calculator, if this looks about right

Re: convert radians to decimal degrees

CelesteWalz — Wed, 12 Apr 2017 21:29:34 GMT

Thank you! Worked great. I can't believe in my searching that didn't come up as a function, but I'm not familiar with Python so I'm sure it was operator error.

Re: convert radians to decimal degrees

DanPatterson_Retired — Wed, 12 Apr 2017 21:47:01 GMT

buried in the help files, but useful links there are Python is the language of the present and future since vb has been removed in PRO

Re: convert radians to decimal degrees

CelesteWalz — Wed, 12 Apr 2017 21:49:08 GMT

Bookmarked. And I guess I'll have to learn some Python. Thanks again.

Re: convert radians to decimal degrees

DarrenWiens2 — Wed, 12 Apr 2017 21:59:37 GMT

Dan's solution is correct, and what I use myself, but I just want to point out that degrees, whether lat/long or the same old degrees you remember from sixth grade math class (e.g. the angle in a wedge-shaped object) they are the same thing. The formula to convert radians to degrees, no matter what language you write, is: radians * 180/pi

Re: convert radians to decimal degrees

CelesteWalz — Wed, 12 Apr 2017 22:03:24 GMT

Let's just say it has been a LOOONNGG time since I took 6th grade math! 🙂

Thanks for the formula, though - I've put it my notes for next time.