Displaying 5 results from an estimated 5 matches for "bacaro".
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acaso
2006 Jun 04
1
How to use lmer function and multicomp package?
...(fixed factor) = cla (R variable)
plot number, 98 levels each with 4 replicates (random factor within "cla")
= plotti (R variable)
number of species, totally 392 counts, response variable = sp (R variable)
Now, I started my analysis as follow (after the creation of the data.frame
"bacaro"):
mod1<-lmer(sp~cla+(1|cla:plotti), data=bacaro, family=poisson(link=log))
> summary(mod1) #sunto del modello
Generalized linear mixed model fit using PQL
Formula: sp ~ cla + (1 | cla:plotti)
Data: bacaro
Family: poisson(log link)
AIC BIC logLik deviance
4...
2006 May 25
0
Nested design and GLM: ....continue
...s (fixed factor) = cla (R variable)
plot number, 98 levels each with 4 replicates (random factor within "cla")
= plotti (R variable)
number of species, totally 392 counts, response variable = sp (R variable)
Now, I startd my analysis as follow (after the creation of the data.frame
"bacaro"):
mod1<-lmer(sp~cla+(1|cla:plotti), data=bacaro, family=poisson(link=log))
> summary(mod1) #sunto del modello
Generalized linear mixed model fit using PQL
Formula: sp ~ cla + (1 | cla:plotti)
Data: bacaro
Family: poisson(log link)
AIC BIC logLik deviance
4...
2007 Oct 05
0
use of specaccum in routine procedure
...n my opinion that
the number of randomization for calculation of an approximative mean of
species richness for dimension_15 should be equal to....infinite???
Does someone know if some compiled function in R could provide help for my
problems or where can I look for a solution?
Many thanks
Giovanni Bacaro
--
Dr. Giovanni Bacaro
Universit? degli Studi di Siena
Dipartimento di Scienze Ambientali "G. Sarfatti"
Via P.A. Mattioli 4 53100 Siena
tel. 0577 235415
email: bacaro a unisi.it
2006 May 20
0
GLM with nested design
...dering the nested nature of my design? I'm sorry but I don't know the
right package to use.
3) for the Anova analysis I'd like use a post-hoc comparison between
pairwise classes. What is the right procedure to do this? Is this analysis
performed in R?
Thanks
Giovanni
--
Dr. Giovanni Bacaro
Universit? degli Studi di Siena
Dipartimento di Scienze Ambientali "G. Sarfatti"
Via P.A. Mattioli 4 53100 Siena
tel. 0577 235408
email: bacaro a unisi.it
2006 May 18
4
Nested design
Dear list members,
I'd like to perform a glm analysis with a hierarchically nested design. In
particular,
I have one fixed factor ("Land Use Classes") with three levels and a random
factor ("quadrat") nested within Land Use Classes with different levels per
classes (class artificial = 1 quadrat; class crops = 67 quadrats; and class
seminatural = 30 quadrats).
I have four