Hazard Ratio Plot for Weibull Models

Can anyone help me out with plotting a Hazard Ratio Plot for a Weibull disribution. The following link specifies how a Hazard Ratio could be plotted for a Cox PH model:

Plot of the estimated log hazard ratio in R

For a Weibull survival regression model, the baseline hazard function is easily obtained from the model parameter estimates. The hazard function for a Weibull family RV is $p\lambda^pt^{p-1}$. So just use your estimates of $\lambda$ and $p$ and graph this function. It is log-linear in time, a rather strong assumption that is easily relaxed with Cox models or piecewise-parametric survival models.