Message-ID: <200510160430.j9G4U76i021168@hypatia.math.ethz.ch>
Date: 2005-10-16T05:29:44Z
From: Leaf Sun
Subject: Sorting a data frame by one of the variables
Dear all,
I have a date frame like this:
X Y Z
22 24 4.3
2.3 3.4 5.3
.....
....
57.2 23.4 34
What my purpose is: to sort the data frame by either X, Y or Z.
sample output is (sorted by X) :
X Y Z
2.3 3.4 5.3
.....
......
22 24 4.3
...
57.2 23.4 34
I have no idea how to use sort, order or rank functions. Please help me out.
Thanks!
Leaf