Hi Ben,
Thanks for clarifying this, I used a misleading word, "model" the
observation time
sounds as if observation time were the dependent variable - which it is
not, of course,
instead, in the scenario described, the parrot counts are modeled.
Best wishes,
Matthias
Am 30.12.2011 20:50, sc
Matthias Gondan gmx.de> writes:
>
> Hi,
>
> Use offset variables if count occurrences of an event and you want to
> model the
> observation time.
>
> glm(count ~ predictors + offset(log(observation_time)), family=poisson)
>
> If you want to compare durations, look at library(survival), ?coxp
Hi,
Use offset variables if count occurrences of an event and you want to
model the
observation time.
glm(count ~ predictors + offset(log(observation_time)), family=poisson)
If you want to compare durations, look at library(survival), ?coxph
If tnoise_sqrt is the square root of tourist noise,
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