| predprob.zeroinfl {pscl} | R Documentation |
Produces predicted probabilities of counts from a zero-inflated regression models
## S3 method for class 'zeroinfl': predprob(obj,...)
obj |
a fitted object of class inheriting from "zeroinfl" |
... |
additional arguments to be passed to predict.zeroinfl
|
Calls predict.zeroinfl with the option type="prob"
See predict.zeroinfl
Simon Jackman <jackman@stanford.edu>
data(bioChemists)
zip <- zeroinfl(count=art ~ .,
x = ~ fem + mar + kid5 + phd + ment,
z = ~ fem + mar + kid5 + phd + ment,
dist="poisson",
data=bioChemists,trace=TRUE) ## zero-infl poisson
phat <- predprob(zip)
newdata <- expand.grid(list(fem="Men",mar="Married",
kid5=1,phd=3.103,
ment=0:77))
phat <- predprob(zip,newdata=newdata)