Hi R-experts, I am using the envfit function over an ordination of floristic data.
The problem is that every time that I run it changes the results. Sometimes dramatically, selecting variables that the first time were not significant. I do not get what could be the problem or if is normal given the permutations are different. # the NMDS ordination gap_flor_NMDS_chord <- metaMDS(gaps_flor, distance = "euclid", k = 2, trymax = 20, autotransform =TRUE, noshare = 0.1, wascores = TRUE, expand = TRUE, trace = 1, plot = FALSE, old.wa = FALSE, zerodist = "add") # the environmental variables to use with enfit explain1<- site[c("Tipo", "Gap.size", "Gap diameter (m)", "Size.cat", "altitud", "Slope (%)", "Exp.deg", "form","formcont", "largo_medio_gmak_m", "Dom.Hight", "d_m_gapmak_cm", "Cat_edad", "uprooted_perc", "Snapped gap maker (%)", "stand_dead_perc", "controlled_perc", "nodet_orig_gmkr_perc", "Total_borde", "PACL_diff_warm045", "rock", "musg_hep", "mantillo", "sm", "tronco_tot", "Time.ctr", "mf_gmk_perc", "fm_gmk", "dc_gmk_perc", "be_gmk_perc", "ach_gmk_perc", "nodet_spp_gmkr_perc", "Myrceugenia as border tree (%)", "Fm_borde.", "Dc_borde.", "Be_borde.", "Rv_borde.", "Aristotelia as border tree (%)")] # the Envfit calculation exp_flor1 <- envfit(gap_flor_NMDS_chord, explain1, permu = 999, na.rm=T) Thanks a lot for your help, comments and input! ----- Rodrigo Vargas G. ----------------------------------------- Silviculture Institute Freiburg University -- View this message in context: http://r.789695.n4.nabble.com/Envfit-inconsistant-result-tp3836585p3836585.html Sent from the R help mailing list archive at Nabble.com. ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.