Re: [R-sig-eco] deviance as a goodness of fit in GLM

2014-07-22 Thread Bob O'Hara
On 21/07/14 19:52, Samantha PameLa wrote: Good day everybody, I'm a marine biologist student, working on my bachelor thesis and I'm stucked with a statistical doubt in the process, I hope someone here could help me. My thesis aims to understand which biological and environmental factors

Re: [R-sig-eco] deviance as a goodness of fit in GLM

2014-07-22 Thread Rui Coelho
Hi Samantha, Following what was already said before, you can also build your models by testing step-by-step which explanatory variables should be included, for example by using a Likelihood Ratio Test to compare each univariate model to the null model (intersect only). With that (determining

Re: [R-sig-eco] Color Analysis R

2014-07-22 Thread Alejandro González
Dear Luis, Before I suggest you further reading and/or R packages for analysing color it would be useful to know the purpose: do you need to get color from spectral data, modelling color visualization by animals, etc.? Best, Alejandro González -- Message: 3