A function to back-transform estimates of the parameters of the weibull baseline hazard function, so they are commensurate with R's inbuilt density functions. Transforms from (shape, scale) to (alpha, lambda)
transformweibull(x)a vector of paramters
the transformed parameters. For the weibull model, this is the back-transform from 'alpha' and 'lambda' to 'shape' 'scale' (see ?dweibull).