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Selected Reading
How to sort a data frame in R by multiple columns together?
We can sort a data frame by multiple columns using order function.
Example
Consider the below data frame −
> df df x1 x2 x3 x4 1 Hi A 4 9 2 Med B 7 5 3 Hi D 5 7 4 Low C 3 4
Let’s say we want to sort the data frame by column x4 in descending order then by column x1 in ascending order.
It can be done follows −
> df[with(df, order(-x4, x1)), ] x1 x2 x3 x4 1 Hi A 4 9 3 Hi D 5 7 2 Med B 7 5 4 Low C 3 4
We can do it by using column index as well −
> df[order(-df[,4], df[,1]), ] x1 x2 x3 x4 1 Hi A 4 9 3 Hi D 5 7 2 Med B 7 5 4 Low C 3 4
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