Thanks
Pscl seems to be a sensible option.
I have the counts variable with the name "N". This variable can only take
values bigger than zero!
I have two explanatory variables with the names "type" and "diam"
but when I run
hpm <- hurdle(n ~ type+diam, data = an, dist = "poisson")
I get the message "invalid dependent variable, minimum count is not zero".
Well, I know that N>0, that is why want to run a zero-truncated model. But I
must be missing something...and the manual does not seem to help a lot...
Can anyone help please?
Dr. Iasonas Lamprianou
Department of Social and Political Sciences
University of Cyprus
>________________________________
>From: Mitchell Maltenfort <mmal...@gmail.com>
>To: Iasonas Lamprianou <lampria...@yahoo.com>; "r-help@r-project.org"
><r-help@r-project.org>
>Sent: Sunday, 31 July 2011, 20:45
>Subject: Re: [R] zero truncated poisson regression
>
>Pscl package.
>
>On 7/31/11, Iasonas Lamprianou <lampria...@yahoo.com> wrote:
>> Dear friends,
>>
>> does anyone know how I can run a zero truncated poisson regression using R
>> (or even SPSS)?
>>
>> Dr. Iasonas Lamprianou
>> Department of Social and Political Sciences
>> University of Cyprus
>>
>> [[alternative HTML version deleted]]
>>
>>
>
>--
>Sent from my mobile device
>
>Due to the recession, requests for instant gratification will be
>deferred until arrears in scheduled gratification have been satisfied.
>
>
>
[[alternative HTML version deleted]]
______________________________________________
R-help@r-project.org mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
