Implements the weights to be used in the local linear HQM estimator.
sn.0(xin, xout, h, kfun)
sn.1(xin, xout, h, kfun)
sn.2(xin, xout, h, kfun)A vector of \(s_n(x)\) for all values \(x\) on the marker grid.
Sample values.
Grid points where the estimator will be evaluated.
Bandwidth parameter.
Kernel function.
The function implements the local linear weights in the definition of the estimator \(\hat{h}_x(t)\), see also h_xt