Reconstruct a history of exposure from a PR time series

Construct a function describing the EIR, including the mean EIR, the seasonal pattern, and the i

For set of paired a time series \(X,\) compute the phase of a seasonal pattern for the EIR

Usage

pr2history(xds_obj)

Arguments

xds_obj

an xds xds_obj

Value

the ramp.xds model object, fitted to a time series. The state at the end is saved as xds_obj$history