Sorting a data set
If you want to sort by the columns with the names 'var1' and 'var2', you would do: newdata <- data[order(data$var1, data$var2), ]
On Wed, May 30, 2012 at 6:07 PM, tony.anderson <tony.anderson at noaa.gov> wrote:
I am a novice user of R and am stumbling on how to order a dataset produced during my session. I have a 1863 row X 14 column dataset that I want to put out to a file. ?I want the output sorted by the first column and then by the second column both in ascending order. ?The first column is character and the second is numeric (I hope). ?I used an "as.numeric" function to assign that variable. ?Is there a reason R would not accept "0" or "00" as a numeric value? I have tried using the order function but the examples I have seen don't seem to translate for me. ?I tried something like this assuming my dataset is called "data". datanew<-data[order(var1, var2),] print(datanew) This generates an "incorrect number of dimensions" ?error in the order function. ?I also tried listing all the variables in the parentheses. Your help is appreciated.
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