arrival_rate: Estimate arrival rate of a Poisson points process
Description
In a Poisson point process, subjects arrive with exponentially
distributed inter-arrival times with rate \(\psi\). This function
can be used to estimate the parameter \(\psi\).
Usage
arrival_rate(data)
Value
A (named) vector containing the estimated arrival rate in the data,
or for each unit in the data.
Arguments
data
A data.frame containing the following named column for each subject:
entrytime:
time of entry into study (numeric);
If the data.frame also contains a column named unit, the arrival
rate will be determined for each unit separately.