On 11-04-09 03:07 AM, Peter Solymos wrote:
Jeff,
The zero truncated Poisson distribution can be described as a
probability function conditional on Y0:
Pr(Y=y|Y0) = Pr(Y=y) / (1-Pr(Y=0)), y=1,2,3,...
This leads to this function 'nll' for the negative log-likelihood:
nll -
-ecology@r-project.org
Subject: Re: [R-sig-eco] zero-truncated Poisson
On 11-04-09 03:07 AM, Peter Solymos wrote:
Jeff,
The zero truncated Poisson distribution can be described as a
probability function conditional on Y0:
Pr(Y=y|Y0) = Pr(Y=y) / (1-Pr(Y=0)), y=1,2,3,...
This leads
]
Sent: Friday, April 08, 2011 4:15 PM
To: Stratford, Jeffrey
Cc: r-sig-ecology@r-project.org
Subject: Re: [R-sig-eco] zero-truncated Poisson
-BEGIN PGP SIGNED MESSAGE-
Hash: SHA1
On 04/08/2011 04:10 PM, Stratford, Jeffrey wrote:
Hi everyone,
I'm attempting to run a zero-truncated
Hi everyone,
I'm attempting to run a zero-truncated Poisson using VGAM and I run into
this error:
Error in if ((temp - sum(wz[, 1:M, drop = FALSE] wzepsilon)))
warning(paste(temp, :
argument is not interpretable as logical
Here's the code I'm using
blja - read.csv(g:\\blja\\blja.csv,
-BEGIN PGP SIGNED MESSAGE-
Hash: SHA1
On 04/08/2011 04:10 PM, Stratford, Jeffrey wrote:
Hi everyone,
I'm attempting to run a zero-truncated Poisson using VGAM and I run into
this error:
Error in if ((temp - sum(wz[, 1:M, drop = FALSE] wzepsilon)))
warning(paste(temp, :
Message-
From: Ben Bolker [mailto:bbol...@gmail.com]
Sent: Friday, April 08, 2011 4:15 PM
To: Stratford, Jeffrey
Cc: r-sig-ecology@r-project.org
Subject: Re: [R-sig-eco] zero-truncated Poisson
-BEGIN PGP SIGNED MESSAGE-
Hash: SHA1
On 04/08/2011 04:10 PM, Stratford, Jeffrey wrote:
Hi
-Oorspronkelijk bericht-
Van: r-sig-ecology-boun...@r-project.org
[mailto:r-sig-ecology-boun...@r-project.org] Namens Manuel Spínola
Verzonden: maandag 17 mei 2010 4:15
Aan: r-sig-ecology@r-project.org
Onderwerp: [R-sig-eco] Zero-truncated Poisson model in R
Dear list members,
Is there any
Hi Manuel,
It seems that the package VGAM is taking zerotruncated models into
account. You can find more info on
http://www.stat.auckland.ac.nz/~yee/VGAM/index.html. You can use as a
family function posnegbinomial (for zero truncated data with negative
binomial distribution) or pospoisson
Dear list members,
Is there any function to do zero-truncated poisson or zero-truncated
negative binomail in R?
Thank you very much in advance.
Best,
Manuel Spínola
--
Manuel Spínola, Ph.D.
Instituto Internacional en Conservación y Manejo de Vida Silvestre
Universidad Nacional
Apartado
