Re: [R-sig-eco] Sites names with spaces in ordiplot

2011-04-01 Thread Manuel Spínola
Gavin and Jari, thank you very much. Actually, I am interested in both, sites and species. I have 3000 species (tropical forest trees) and I am trying to read the txt file with read.table. I tried also read.delim, but I don't know how to bring the sites names in the plot. I guess now I have

Re: [R-sig-eco] Sites names with spaces in ordiplot

2011-04-01 Thread Gavin Simpson
On Fri, 2011-04-01 at 05:14 -0600, Manuel Spínola wrote: Gavin and Jari, thank you very much. Actually, I am interested in both, sites and species. I have 3000 species (tropical forest trees) and I am trying to read the txt file with read.table. I tried also read.delim, but I don't know

Re: [R-sig-eco] Sites names with spaces in ordiplot

2011-04-01 Thread Manuel Spínola
Thank you very much Gavin. I understand now. Best, Manuel On 01/04/2011 05:29 a.m., Gavin Simpson wrote: On Fri, 2011-04-01 at 05:14 -0600, Manuel Spínola wrote: Gavin and Jari, thank you very much. Actually, I am interested in both, sites and species. I have 3000 species (tropical

[R-sig-eco] adonis once again

2011-04-01 Thread Jens Oldeland
Dear list members, I have a question again on adonis and whether the interpretation is correct. I must admit that I am a big fan of ANOSIM, I think it is pretty simple to explain, in contrast to adonis. I have plant species dataset based on a literature review. I have calculated the

[R-sig-eco] Calc'ing McFadden’s R2 in R

2011-04-01 Thread kgorman
Hello, I am wondering about calculating R2 values for logistic regression/glm models in R. I assume this is possible, but have not run across R code to do it. Thanks for any guidance! Kristen ___ R-sig-ecology mailing list

Re: [R-sig-eco] Calc'ing McFadden’s R2 in R

2011-04-01 Thread Pekin, Burak K
I have been wondering about the same thing recently. Is calculating an R2 useful for glms with poisson distribution useful? The standard glm summary outputs p-values and an AIC for the overall model, but there isnt anything that tells you how well the model explains the variation in the data. I