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R extension failed on column selection
wanglu2014
Member Posts: 19 
Contributor II
Hi:
My code is
rm_main = function(dat)
{
#dat<-dat[-which(rowMeans(is.na(dat)) > 0.5), ]
dat<-dat[ ,-which(rowMeans(is.na(dat)) > 0.5)]
return(data.frame(dat))
}
When run "dat<-dat[-which(rowMeans(is.na(dat)) > 0.5), ]", rapidminer get the wanted dataframe, however, when run "dat<-dat[ ,-which(rowMeans(is.na(dat)) > 0.5)]" is wrong.
It take "which(rowMeans(is.na(dat)) > 0.5)" result as a list, not filter the dataframe.
Could you kindly suggest some idea?
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Answers
The error lies in the R code itself. You are subsetting the columns using row data (porcentange of missing values in a row). That is incorrect.