n-comparable units. It is also used to specify
           the frequency for variables with the 'a' (angular) style.
     'sty' Character string (length d) of styles for each predictor variable.
           n denotes `normal'; a denotes angular (or periodic); l and r
           denotes one-sided left and right; c is conditionally parametric.
 

  Smoothing Parameters and Bandwidths:
  The bandwidth (or more accurately, half-width) of the smoothing window
  controls the amount of smoothing. Locfit all