Dear List members,
I am trying to map the habitat suitability of Nephrops and one of my predictor
is a categorical variable.
However when I utilised the command as.factor (before to create my rasters
stack) I get the error message Error in 1:ncol(r) : argument of length 0.
Could anyone help
...@uibk.ac.at]
Sent: 18 October 2013 18:57
To: Lauria, Valentina
Cc: r-help@r-project.org
Subject: Re: [R] hurdle model error why does need integer values for the
dependent variable?
On Fri, 18 Oct 2013, Lauria, Valentina wrote:
Dear list,
I am using the hurdle model for modelling the habitat of rare
Dear list,
I am using the hurdle model for modelling the habitat of rare fish species.
However I do get an error message when I try to model my data:
test_new1-hurdle(GALUMEL~ depth + sal + slope + vrm + lat:long +
offset(log(haul_numb)), dist = negbin, data = datafit_elasmo)
Error in
Dear All,
I am trying to model the habitat mapping of 4 sharks species and my data are
zero inflated and positively skewed. The zero percentages in my data vary
between 56-77%. I did some tests fitting GAMs with negative binomial family
(with theta between 1-10). Is this the best way to go?
Dear All I am having problems to install the package COZIGAM.
Despite I have the update version of R (3.0.2) when I try to load the package I
cannot find it in the list of available packages.
If I try to install it from a local zip file I do get this error message:
Error in
://www.nephrops.eu
From: Cade, Brian [ca...@usgs.gov]
Sent: 14 August 2013 16:15
To: Achim Zeileis
Cc: Lauria, Valentina; r-help@R-project.org
Subject: Re: [R] Problem with zero-inflated negative binomial model in sediment
river dynamics
Z is correct, of course. I
Dear All,
I am running a negative binomial model in R using the package pscl in oder to
estimate bed sediment movements versus river discharge. Currently we have
deployed 4 different plates to test if a combination of more than one plate
would better describe the sediment movements when the
Hi,
I am trying to predict the habitat suitability of lobster with GAMs. I need to
produce a map in ArcGis of the predicted densities. I did some search and the
function predict.gam seems to do the job.
Is this the right way to do it? when you apply the function you get the
predicted values
National University of Ireland, Galway
Ireland
www.nephrops.eu
From: b.rowling...@gmail.com [b.rowling...@gmail.com] on behalf of Barry
Rowlingson [b.rowling...@lancaster.ac.uk]
Sent: 12 April 2013 14:15
To: Lauria, Valentina
Cc: r-help@R-project.org
Subject
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