CODEWITHSUNDEEP
matlabanglepolar-coordinatesazimuth
Shelby
Shelby

Reputation: 21

Find mean, standard deviation etc of azimuths

I have a Matlab script that tells me about great circle paths crossing grid locations, and want to look at the distribution of paths crossing a certain grid location. For some location, I have a vector of azimuths of paths crossing that location,

az_vec

and I want to find the mean, standard deviation, and potentially other quantities of this vector. What I have right now is simply

mean_az = mean(az_vec);
std_az  = std(az_vec);

and these work fine for narrow distributions of angles far away from 0/360 degrees, but for distributions including 0 degrees they don't work. E.g.

mean_az = mean([10 350])

should return 0, not 180. I don't think I can use a function like wrapTo180, because then I will have the same problem around 180 degrees.

Is there some way to handle this wrapping problem?

Upvotes: 2

Views: 272

Answers (1)

gehbiszumeis
gehbiszumeis

Reputation: 3711

There is a solution in the MATLAB file exchange for this:

MEANANGLE

>> meanangle([10,340])

ans =

   -5.0000

Upvotes: 0

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