search for: topo_var

Displaying 2 results from an estimated 2 matches for "topo_var".

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2010 Aug 17
2
Independent variables omitted in lm and glm
...dim(datam) datam[1,] # original regression model (16 indep. variables) Mig.lm <-lm(datam$SummerM_ratio~datam$temp_ran+datam$temp_mean+datam$temp_max+datam$temp_min+datam$evi_ran+datam$evi_mean+datam$evi_max+datam$evi_min+datam$prec_ran+datam$prec_mean+datam$prec_max+datam$prec_min+datam$topo_var+datam$topo_mean+datam$coast+datam$Iso_index_0808,data=datam) summary(mig.lm) mig.glm <-glm(datam$SummerM_ratio~datam$temp_ran+datam$temp_mean+datam$temp_max+datam$temp_min+datam$evi_ran+datam$evi_mean+datam$evi_max+datam$evi_min+datam$prec_ran+datam$prec_mean+datam$prec_max+datam$prec_...
2010 Aug 17
2
AIC in MuMIn
...de below but failed. Please kindly suggest the potential failure cause. code rm(list=ls()) library(MuMIn) datam <-read.csv("c:/migration/Mig_ratio_20100817.csv",header=T, row.names=1) mig.stds <-glm(datam.std$SummerM_ratio~ datam.std$temp_max++datam.std$evi_mean+datam.std$topo_var+datam.std$topo_mean+datam.std$coast+datam.std$Iso_index_0808,data=datam.std,family=gaussian) target.model <- dredge(mig.stds, subset=datam.std$temp_ran) error in eval(expr, envir, enclos), 'temp_ran' not found Q3 showing sub-models for two assigned explanatory variables The man...