Hi all, I have several data sets that relate some ecological phenomenon to a gradient (e.g., avian species richness and urbanization, weevil prevalence in acorns and latitude - see https://www.mdpi.com/1424-2818/13/7/303). Most of these data sets have more variation on one end than the other. I have considered quantile regression but this seems inadequate. I would like to model variation per se along a gradient.
Is there an R function that models sd or variance along a gradient. I was thinking that it would require a moving window of some sorts. Any suggestions would be appreciated. Thanks, Jeff ******************************************************** Jeffrey A. Stratford, PhD. Department of Biology and Earth System Sciences 84 W South Street Wilkes University, PA 18766 USA https://sites.google.com/a/wilkes.edu/stratford/ ******************************************************** [[alternative HTML version deleted]] _______________________________________________ R-sig-ecology mailing list R-sig-ecology@r-project.org https://stat.ethz.ch/mailman/listinfo/r-sig-ecology
