[R] Sapply for descriptive statistics

[David Winsemius]

Sent from my iPhone

On Mar 9, 2011, at 5:59 PM, Tomii <diogenas at gmail.com> wrote:

> I try to calculate descriptive statistics for one of the variables in the
> data frame, however command sapply calculates these statistics for every
> value of the variable separately. How to make it calculate range (as well as
> other statistics) for all column?
> 
If you want range of all columns try:

sapply(as1, range)

-- 
David
> Here are commands and results:
> 
>> as1$trust
> [1]  5.957510  5.888664  6.168135  6.419472  5.668796  6.026923
> 6.456721  7.017946  5.294411
> 
> [10]  7.296844  6.479167  5.009000  7.149073  5.932667  5.991000
> 5.327137  5.453230  5.650350
> [19]  5.295608  5.518337  4.875000  6.637000  5.891014  6.726055
> 10.695650  5.490983  7.290476
> [28]  5.728543  4.103689  8.421315
>> des.trust <- sapply(as1$trust, range, na.rm=TRUE)
>> des.trust
>        [,1]     [,2]     [,3]     [,4]     [,5]     [,6]     [,7]
> [,8]     [,9]    [,10]
> [1,] 5.95751 5.888664 6.168135 6.419472 5.668796 6.026923 6.456721
> 7.017946 5.294411 7.296844
> [2,] 5.95751 5.888664 6.168135 6.419472 5.668796 6.026923 6.456721
> 7.017946 5.294411 7.296844
> 
>        [,11] [,12]    [,13]    [,14] [,15]    [,16]   [,17]   [,18]
> [,19]    [,20] [,21]
> [1,] 6.479167 5.009 7.149073 5.932667 5.991 5.327137 5.45323 5.65035
> 5.295608 5.518337 4.875
> [2,] 6.479167 5.009 7.149073 5.932667 5.991 5.327137 5.45323 5.65035
> 5.295608 5.518337 4.875
> 
>     [,22]    [,23]    [,24]    [,25]    [,26]    [,27]    [,28]
> [,29]    [,30]
> [1,] 6.637 5.891014 6.726055 10.69565 5.490983 7.290476 5.728543
> 4.103689 8.421315
> [2,] 6.637 5.891014 6.726055 10.69565 5.490983 7.290476 5.728543
> 4.103689 8.421315
> 
> 
> tomii <t.klepsys at gmail.com>
> 
>    [[alternative HTML version deleted]]
> 
> ______________________________________________
> R-help at 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.