[R] Sapply for descriptive statistics

[David Winsemius]

Sent from my iPhone

On Mar 9, 2011, at 6:13 PM, David Winsemius <dwinsemius at comcast.net> wrote:

> 
> 
> 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)

To expand: you sent separate values to range. If you had tried:
sapply(as1["trust"], range)
pply(as1["trust"], range)
... you should have succeeded.

> 
> -- 
> 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]]
>> 
>> ______________________________________________
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>> and provide commented, minimal, self-contained, reproducible code.
> 
> ______________________________________________
> 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.