Missing inputs to distance function

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Keir Hunter
Keir Hunter 2020-6-16
回答： Rafael Hernandez-Walls 2020-6-16
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
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回答（1 个）

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

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