Displaying 20 results from an estimated 3000 matches similar to: "habitat mapping of sharks"
2013 Apr 12
1
produce a map in ARCGIS from a GAM output
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 (different from your input data points) but I do not understand what is the procedure with the spatial
2013 Oct 18
1
hurdle model error why does need integer values for the dependent variable?
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 hurdle(GALUMEL ~ depth + sal + slope + vrm + lat:long + offset(log(haul_numb)), :
2010 Jul 20
1
logistic regression with repeated measures for species-habitat associations
Hi,
I have three years of species presence/absence data for a set of ~100
ponds, with a list of associated habitat characteristics (park, vegetation,
hydroperiod, etc.). The datasets differ slightly by year because some ponds
were dry in some years and not in others. My goal is to look at habitat
associations for a couple focal species.
For each year, I have a data table that looks like
2013 Oct 08
2
problems with package COZIGAM
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 read.dcf(file.path(pkgname, "DESCRIPTION"), c("Package", "Type")) :
cannot open the
2006 Apr 20
0
Ruby bindings for Valentina: help wanted
Hi
Ruslan Zasukhin is looking for people with experience in doing
connection adapters to help him out in analyzing and implementing
native ruby bindings for the ultra-fast Valentina database and
providing access to Rails.
You can find out more about Valentina at http://www.paradigmasoft.com/
Brave souls wanting to help out can contact Ruslan at
2006 Oct 27
0
VGAM package released on CRAN
Dear useRs,
upon request, the VGAM package (currently version 0.7-1) has been
officially released on CRAN (the package has been at my website
http://www.stat.auckland.ac.nz/~yee/VGAM for a number of years now).
VGAM implements a general framework for several classes of
regression models using iteratively reweighted least squares
(IRLS). The key ideas are Fisher scoring, generalized linear
and
2008 Apr 18
2
rzinb (VGAM) and dnbinom in optim
Dear R-help gurus (and T.Yee, the VGAM maintainer) -
I've been banging my head against the keyboard for too long now, hopefully someone can pick up on the errors of my ways...
I am trying to use optim to fit a zero-inflated negative binomial distribution. No matter what I try I can't get optim to recognize my initial parameters. I think the problem is that dnbinom allows either
2012 Oct 26
1
Openbugs- Array Index
Hi,
I'm working on the codes below however every time I run them when they get
to OpenBUGS I keep getting the error message: array index is greater than
array upper bound for hab.
Any help would be greatly appreciated,
Suzie
Codes:
ungulate <- read.csv(file.choose ()) #ungulate
ungulate <-
as.matrix(ungulate);colnames(ungulate)<-NULL;rownames(ungulate)<-NULL
2011 Aug 23
1
P values for vglm(zibinomial) function in VGAM
Hi ,
I know this question has been asked twice in the past but to my knowldege,
it still hasn't been solved.
I am doing a zero inflated binomial model using the VGAM package, I need to
obtain p values for my Tvalues in the vglm output. code is as follows
> mod2=vglm(dmat~Season+Diel+Tidal.phase+Tidal.cycle,zibinomial, data=mp1)
> summary(mod2)
Call:
vglm(formula = dmat ~ Season +
2016 Dec 05
0
Marine Spatial Modeler/Quantitative Ecologist position
Marine Spatial Modeler/Quantitative Ecologist position
Full-Time/Exempt (Salaried) contract position with CSS-Dynamac (40 hrs per week)
Job ID: 2016-1790
Location: Silver Spring, MD, USA; National Oceanic and Atmospheric Administration (NOAA) National Centers for Coastal Ocean Science (NCCOS)
Posted Date: 11/29/2016
Category: Science/Engineering
Security Clearance Level: National Agency Check
2002 Jun 28
1
windres problem
Hello,
I am trying to build an R package for Windows from an R package
for Linux. There seems to be a "windres" problem somewhere.
Here's what I get.
C:\Temp>Rcmd build --binary VGAM > mm
make[2]: windres: Command not found
make[2]: *** [VGAM_res.o] Error 127
make[1]: *** [src/VGAM.dll] Error 2
make: *** [pkg-VGAM] Error 2
In more details, it goes like the following.
2008 Oct 10
0
Problems and bugs in vgam()
Hello R-Users,
I have recently run into several problems using vgam() in the VGAM
package. I am hoping someone might have some solutions...
Briefly, I have been trying to fit GAM models for zero-altered negative
binomial models.
1. When fitting smoothed parameters (e.g. s(X, df=2)) changing the
degrees-of-freedom has no effect on the level of smoothing (e.g. number
of knots for the
2012 Jul 13
3
Help with R2 OpenBUGs
Hi, I'm currently working on the below codes however whenever I run it in
openbugs it gives an error message saying: unknown type of logical function
error pos 76. Any help would be appreciated.
## bugs code
library(R2OpenBUGS)
sink("C:/Users/CCF/Documents/Suzie Work/PTY Project/Waterhole
Correction/ungulate.txt")
cat("
model{
# hyperparameters
# habitat effects for each
2012 Jan 10
1
S4 summary method not being called (VGAM)
The symptom triggering this email is that an S4 summary method sometimes refuses to be invoked, even when a package is explicitly loaded, if the first load of the package is implicit. It may or may not be specific to 'summary' methods and/or the 'VGAM' package. I've sent to R-devel because (i) it looks like some kind of bug to me, but I'm not sure; (ii) it's not
2009 Apr 20
1
doing zero inflated glmm for count data with fmr
Hello R users,
Doing My PhD I collected count data which I believe is zero inflated. I have
run a statistical model with lmer and family=poisson and got
summary(model)@sigma=1 so I believe there is no overdispertion. I would
like to use the fmr function from the 'gnlm' library but I just cannot
figure out from the examples in the help page and some forums out there how
to convert the lmer
2015 Nov 10
2
Problema con la lectura de datos
Valentina,
Si entiendo bien la primer columna de Variables es el nombre de Empresas
(un character), no uses esta columna en la función cor, sólo las columnas
numéricas. cor(Variables[ , -which( names(Variables) == "Empresas")])
Si no es ese el problema envía
str(Variables)
para entender mejor la estructura de los datos, y si puedes dput(Variables).
Suerte,
Daniel Merino
El 10 de
2008 Feb 15
0
Poisson-lognormal probability calculations
Hi,
just for the record, although I don't think it's relevant (!)
-------------------------------------
> sessionInfo()
R version 2.6.0 (2007-10-03)
i386-pc-mingw32
locale:
LC_COLLATE=English_United Kingdom.1252;LC_CTYPE=English_United
Kingdom.1252;LC_MONETARY=English_United
Kingdom.1252;LC_NUMERIC=C;LC_TIME=English_United Kingdom.1252
attached base packages:
[1] stats4 splines
2013 Apr 08
1
Computational Ecologist Job at NOAA in Silver Spring, MD -- Marine Wildlife Spatial Modeling in R
The NOAA National Centers for Coastal Ocean Science is hiring a
Computational Ecologist, a statistical/computational ecologist with
experience fitting advanced spatial models to marine wildlife survey
data (e.g., seabirds and marine mammal transects, fisheries trawl
surveys) in R and other statistical languages. This is a full-time,
long-term stable contract position. We are looking for an
2008 Feb 18
0
Solved (??) Behaviour of integrate (was 'Poisson-lognormal probab ility calculations')
Hi Again,
I think I've solved my problem, but please tell me if you think I'm wrong,
or you can see a better way!
A plot of the integrand showed a very sharp peak, so I was running into the
integrand "feature" mentioned in the note. I resolved it by limiting the
range of integration as shown here:
--------------------------------------------------
function (x, meanlog = 0,
2006 Aug 23
0
Random structure of nested design in lme
Why are the results not reliable?
________________________________
From: ESCHEN Rene [mailto:rene.eschen@unifr.ch]
Sent: Wednesday, August 23, 2006 3:48 AM
To: Spencer Graves; r-help@stat.math.ethz.ch
Cc: Doran, Harold
Subject: RE: [R] Random structure of nested design in lme
The output of the suggested lmer model looks very similar to the output of aov, also when I ran the model