search for: m_r_20100707_winterm

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2010 Jul 17
2
cca in vegan (formula instead of community matrix data)
...s must be >0. I searched the previous related messages but found few solutions. Please kindly help and thank you in advance. code This is vegan 1.17-3 Warning message: package 'vegan' was built under R version 2.10.1 rm(list=ls()) library(vegan) datam <-read.csv("c:/migration/M_R_20100707_winterM.csv",header=T, row.names=1) dim(datam) datam[1,] m.cca <- cca(datam$WinterM_ratio~datam$topo_mean+datam$coast+datam$prec_max +datam$temp_min+datam$evi_min, datam) error in cca.default(d$X, d$Y, d$Z) : All row sums must be >0 in the community data matrix [[alternative HTML versi...