In R with a dataframe:
one two three four
1 A A Z Z
2 A A A Z
3 A A A A
4 Z A A A
5 A A A A
I want to extract the subset whose rows have at least one Z in column two : four. That is:
one two three four
1 A A Z Z
2 A A A Z
We can use rowSums on a logical matrix (from removing the first column (df[-1] and comparing (==) with "Z") to extract the rows
df1[rowSums(df1[-1]=="Z")>0,]
# one two three four
#1 A A Z Z
#2 A A A Z
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