Try this —
[lati , loni] = track2(lat1,lon1,lat2,lon2,[],[],number);
MATLAB function arguments are positional (except for the name-value pair arguments), so intermediate argument values need to be ‘empty’ to use the default values.
Using an example from the documentation —
number = 250;
[latgc,longc] = track2(40.71,-74.01,48.86,2.35,[],[],number);
latsize = size(latgc)
lonsize = size(longc)
.
