Missing inputs to distance function

I am using the sunang function from the SunPosition package that I got from the file exchange. It uses the distance function but is raising an error that there are missing inputs even though it seems that it has all the inputs neccessary.

[declin, radiusvector, solar_lon, varargout] = EarthEphemeris(times);
[mu0,solarAzm] = sunang(observer.lat, observer.lon, declin, solar_lon);

Check for missing argument or incorrect argument data type in call to function 'distance'.

Error in sunang (line 69)
[arclen, phi0] = distance(lat, lon, declin, omega);

Error in is_event_observable_test (line 40)
    [mu0,solarAzm] = sunang(observer.lat, observer.lon, declin, solar_lon);

Error in ogre_launch_window (line 35)
bool_array = is_event_observable_test(constraints, observer, targ, time_array, 280.6616010);

The observer is just an object I created to hold the values of the longitude and latitude of the observer. Any help would be great.

Thanks,

Keir

[Rafael Hernandez-Walls]

The matlabexchange sun position package has a program called test_SunPosition.m, have you tried it to see if everything is ok?

[Keir Hunter]

I have not but I will try that.

[Keir Hunter]

That is a different package. I have linked the package I used here:

https://www.mathworks.com/matlabcentral/fileexchange/74939-sunposition

Answer 1

[Rafael Hernandez-Walls]

First you need to put you trajectory of the directory, in my case I put this

path(path,['/Users/rafaelhernandezwalls/Downloads/SunPosition 2'])
% and then run the example
SunPositionNow