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2002 Jun 28
0
handling of missing values in aov/lm
...on to find the factor columns! Subjects<-length(levels(df$Snr)) ## construct an array to receive the means for each combination of the relevant factors: Types<-length(levels(df$Type)) sizes<-length(levels(df$size)) Modalities<-length(levels(df$Modality)) replval<-rep(NA, Subjects*Types*sizes*Modalities) dim(replval)<-c(Subjects,Types,sizes,Modalities) nSS<-as.numeric(df$Snr) nT<-as.numeric(df$Type) nS<-as.numeric(df$size) nM<-as.numeric(df$Modality) for( i in 1:ncol(df) ){ m<-mean(df[,i],na.rm=T)...