how to select numeric columns in r
num_cols <- unlist(lapply(data, is.numeric)) # Identify numeric columns data_num <- data[ , num_cols] #Only select those numeric colmns data_num_nonan <−na.omit(data_num) #How to find the number of nan is each column in R is.na(data_num) colSums(is.na(data_num)) which(colSums(is.na(data_num))>0) names(which(colSums(is.na(data_num))>0))
Source: statisticsglobe.com