[R] modEvA D-squared for gamma glm

Bert Gunter bgunter.4567 at gmail.com
Fri Jun 2 16:38:29 CEST 2017

... As this concerns gene expression, perhaps the Bioconductor list
might be more appropriate. As it is prmarily statistics, not R
programming, maybe stats.stackexchange.com might be a better venue.
You might also be better off contacting the package maintainers
(?maintainer) for such package-specific questions.

-- Bert

Bert Gunter

"The trouble with having an open mind is that people keep coming along
and sticking things into it."
-- Opus (aka Berkeley Breathed in his "Bloom County" comic strip )

On Fri, Jun 2, 2017 at 7:22 AM, Aanchal Sharma
<aanchalsharma833 at gmail.com> wrote:
> Hi All,
> I am running a generalized linear model with gamma distribution in R (glm,
> family=gamma ) for my data (gene expression as response variable and few
> predictors). I want to calculate r-squared for this model.
> I have been reading online about it and found there are multiple formulas
> for calculating R2 (psuedo) for glm (in R) with gaussian (r2 from linear
> model), logistic regression (1-deviance/null deviance), poisson
> distribution (using pR2 in pscl package, D-squared value from modEvA R
> package). But I could not find anything specific to gamma distributions.
> Can pscl and modEVA packages be used for gamma distributions as well? or
> there is any other formula for doing the same?
> Thanks
> Regards,
> Anchal
> --
> Anchal Sharma, PhD
> Postdoctoral Fellow
> 195, Little Albany street,
> Cancer Institute of New Jersey
> Rutgers University
> NJ-08901
>         [[alternative HTML version deleted]]
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