Sorting a dataframe by one column?
mtb954 mtb954 wrote:
Given the following dataframe: A=1:10 B=(a-5)^2 DATAFRAME=data.frame(A,B) How can I sort DATAFRAME increasing (or decreasing, for that matter) by B without making reference to A, or any other column? I've read ?order and ?sort but cannot seem to figure this out.
You should have tried RSiteSearch("sort dataframe") also, since there
are many examples in the archives of R-help.
A=1:10
B=(A-5)^2
mydata=data.frame(A,B)
mydata[order(mydata$B),]
mydata[rev(order(mydata$B)),]
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