Displaying 8 results from an estimated 8 matches for "modelparm".
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2013 Jan 10
0
Questions about the glht function for planned comparison
...= contrMat(lvl.treatments,type='Dunnett',base=1)
mc<-glht(mod1, linfct=mcp(treatments=K),alternative='greater')
But I got the following error:
Error in contr.treatment(n = 0L) :
not enough degrees of freedom to define contrasts
I tried to extract the df parameter using "modelparm()", but the
function couldn't
be applied to lme:
Error in UseMethod("modelparm") :
no applicable method for 'modelparm' applied to an object of class "lme"
The degree of freedom of the fixed effect was 194. I tried to specify
the number
in glht, but got the s...
2007 Nov 21
1
question about multiple comparison in ANOVA
...ollowing error:
Running commands:
amod <- aov(minutes ~ blanket, data = recovery)
rht <- glht(amod, linfct = mcp(blanket = "Dunnett"),
alternative = "less")
Errors are:
Error in try(coef.(model)) : could not find function "coef."
Error in modelparm.default(model, ...) : no 'coef' method for 'model'
found!
Thanks!
Regards,
Anqi Qiu
Assistant Professor
Division of Bioengineering, Faculty of Engineering
National University of Singapore
Email: bieqa@nus.edu.sg
tel: +65 6516 7002
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2007 Nov 21
1
multiple comparison (glht) problem
...the following error:
Running commands:
amod <- aov(minutes ~ blanket, data = recovery)
rht <- glht(amod, linfct = mcp(blanket = "Dunnett"),
alternative = "less")
Errors are:
Error in try(coef.(model)) : could not find function "coef."
Error in modelparm.default(model, ...) : no 'coef' method for 'model'
found!
Thanks!
Regards,
Anqi Qiu
Anqi Qiu
Center for Imaging Science
Johns Hopkins University
Email: anqi at cis.jhu.edu
tel: 410-516-8103
Anqi Qiu
Center for Imaging Science
Johns Hopkins University
Email: anqi at cis...
2012 Dec 05
1
Using multcomp::glht() with Anova object
...t( model.Anova, linfct=designmatrix )
However, when I give glht() an Anova object, I get the following error:
> glht( model.anova, linfct=designmatrix )
Error in UseMethod("vcov") :
no applicable method for 'vcov' applied to an object of class "Anova.mlm"
Error in modelparm.default(model, ...) :
no ‘vcov’ method for ‘model’ found!
Does anyone know how if it's possible to use glht with an Anova object? (I
guess I can get these same comparisons by re-doing the anova using aov() or
lme(), since I don't need the Huynh-Feldt corrections in the post-hoc
tests...b...
2008 Oct 31
0
help with contrasts for a binomial 3-way GLM
...- A == 0 3.0445 1.0362 2.938 0.1727
F - A == 0 3.3399 1.0306 3.241 0.0744 .........etc.
If the GLM is with interactions don't work
Ø acacia3<-glm(acacia~T*t*c,binomial)
Ø > glht(acacia3, linfct = mcp(T = "Tukey"))
Ø Error in modelparm.default(model, ...) :
Ø dimensions of coefficients and covariance matrix don't match
Ø Warning message:
Ø In mcp2matrix(model, linfct = linfct) :
Ø covariate interactions found -- default contrast might be inappropriate
Other function could be simtes but...
2012 Jan 12
0
glht (multicomparisons) with an interaction factor
...his
ways, but doesn't work
1. > summary(glht(mq5, linfct=mcp((estacion:zona)="Tukey",
interaction_average=TRUE)))
2.> s<-interaction(zona,estacion)
> mqs<-glm(rojos~edadysexo+zona+estacion+s,quasipoisson)
> summary(glht(mqs, linfct=mcp(s="Tukey")))
Error en modelparm.default(model, ...) :
dimensions of coefficients and covariance matrix don't match
Anyone can helps?
-----
Mario Garrido Escudero
PhD student
Dpto. de Biolog?a Animal, Ecolog?a, Parasitolog?a, Edafolog?a y Qca. Agr?cola
Universidad de Salamanca
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2012 Jan 13
1
GLHT in multcomp: Two similar models, one doesn't work
...M == 0 -0.5159
I tried to do the same changing factor season (with 2 levels) for month
(with four levels), and i get an error and no results
> monthmodel2<-glm(rojos~ageandsex+sector+month+sector:month,quasipoisson)
> glht(monthmodel2,linfct=mcp(ageandsex="Tukey"))
Error en modelparm.default(model, ...) :
dimensions of coefficients and covariance matrix don't match
I understand nothing, Why this is happen.
I beg for your help
-----
Mario Garrido Escudero
PhD student
Dpto. de Biolog?a Animal, Ecolog?a, Parasitolog?a, Edafolog?a y Qca. Agr?cola
Universidad de Salamanc...
2007 Nov 23
0
R users in Cyprus
...following error:
Running commands:
amod <- aov(minutes ~ blanket, data = recovery)
rht <- glht(amod, linfct = mcp(blanket = "Dunnett"),
alternative = "less")
Errors are:
Error in try(coef.(model)) : could not find function "coef."
Error in modelparm.default(model, ...) : no 'coef' method for 'model'
found!
Thanks!
Regards,
Anqi Qiu
Assistant Professor
Division of Bioengineering, Faculty of Engineering
National University of Singapore
Email: bieqa at nus.edu.sg
tel: +65 6516 7002
[[alternative HTML versio...