Track Methods
Methods to work with a track. Function to calculate the absolute direction of a movement track. 0 is north.
velocity(x, ...) ## S3 method for class 'track_xyt' velocity(x, ...) nsd(x, ...) ## S3 method for class 'track_xy' nsd(x, ...) diff_x(x, ...) ## S3 method for class 'track_xy' diff_x(x, ...) diff_y(x, ...) ## S3 method for class 'track_xy' diff_y(x, ...)
x |
A track_xyt. |
... |
Further arguments, none implemented. |
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