>>>>> "jim" == jim holtman <jholt...@gmail.com> writes:
> Is this what you want:
>> aggregate(x$Sim_1986, list(trunc(x$Latitude)), mean)
> Group.1 x 1 82 55.04276 2 83 60.26186 3 84 39.40297 4 85
> 22.12000
>>
You could also use cut to convert Latitude to a factor:
aggregate(x$Sim_1986, cut(x$Latitude, breaks=seq(-55,85,by=1)), mean)
Mike
>> values between where Latitude 85, 84, 83, 82. The maximum
>> latitude in the dataset as a whole is 83.75 and the
>> minimum is -55.75.
>>
______________________________________________
R-help@r-project.org mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
