delta2a {PLordprob} | R Documentation |
Functions to transform (and antitrasforms) the thresholds into an unconstrained space.
delta2a(delta)
a2delta(a)
delta |
a set of increaing thresholds |
a |
a vector (of size |
delta_k = log(a_k - a_k+1)
A vector of tresholds or of tresholds log-differences
Euloge Clovis Kenne Pagui and Antonio Canale
thresh <- c(0,2,4)
logdiffs <- a2delta(thresh)