Displaying 1 result from an estimated 1 matches for "a13736727".
2007 Nov 13
2
Getting mean in a dataframe
Sorry to hijack this thread. I have a similar but slightly different
situation. Using the original poster's example, how to elegantly get
the mean of column V2 when column V1 is either A or C and F1 is 0?
Thanks,
Gang
On Nov 13, 2007, at 5:30 AM, Petr PIKAL wrote:
> Hi
>
> r-help-bounces@r-project.org napsal dne 13.11.2007 10:59:09:
>
>> Dear list,
>>
>> I