Hi all, I am fairly new to R, and not a stats expert. I am having trouble finding information to help me analyzing my set of data.
I got morphological data on land snail shells of different species from the Galapagos Islands. Each island has up to 6 different vegetation zones, and snails have adapted to up to 4 of these zones on each of the major islands. I would like to test if there is any correlation between the morphology of the shells which is continuous (I ran a PCA analysis on the morphological data, and the variation can be parted into two main principal components: PC1 for size and PC2 for shape) and the vegetation zone where these snails are found (which is a categorical predictor variable). I believe I should run a logistic regression on this, but all I could find in R was an analysis where the predictor was continuous and the response was categorical. Could anyone direct me to the relevant ref or how to write the proper script to run a logistic regression analysis where the predictor would be categorical and the response continuous? Any help or advice on this would be greatly appreciated! Many thanks, Christine Christine Parent Ph.D. candidate Department of Biological Sciences Simon Fraser University [EMAIL PROTECTED] ______________________________________________ [EMAIL PROTECTED] mailing list https://www.stat.math.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
