error in calculating curvature?

[JinlongLi2016]

frenet/python/src/cubic_spline_planner.py

Line 167 in a7e8dd5

k = (ddy * dx - ddx * dy) / (dx ** 2 + dy ** 2)

It seems that the divisor should be $(x'**2 + y'**2)^{3/2}$?

[fjp]

You are correct, thanks for spotting this error. Feel free to open a PR to fix this mistake.