Correlated Random Walk with Measurement Error: Trouble Converging

[bertschi]

@Dalton

This is a good starting point for me. Although I must admit it is rather curious and not intuitive (at least to me) to make use a parameter angle_len which seems to have only a tangential (apologies for the trigonometric pun) relationship to the parameters I’m interested in.

This is a trick I came up with when playing with unit_vector parameters in Stan. I attached a short writeup that explains this idea … circular.pdf (1.7 MB)