Return a list of options for VARPRO based fitting with 3 free parameters.

Usage

varpro_3_para_opts(
  nstart = 20,
  init_damping = 2,
  maxiters = 200,
  max_shift = 5,
  max_damping = 5,
  anal_jac = FALSE,
  bl_smth_pts = 80
)

nstart: position in the time-domain to start fitting, units of data points.
init_damping: starting value for the global Gaussian line-broadening term - measured in Hz.
maxiters: maximum number of levmar iterations to perform.
max_shift: maximum global shift allowed, measured in Hz.
max_damping: maximum damping allowed, FWHM measured in Hz.
anal_jac: option to use the analytic or numerical Jacobian (logical).
bl_smth_pts: number of data points to use in the baseline smoothing calculation.

list of options.