[R] How to perform a grouped shapiro wilk test on dataframe

[ramoss]

Hello,

I was wandering if it is possible to perform on a dataframe called 'all' a
shapiro wilk normality test for COUNTS by variable Group

ACTIVITY?  Could it be done using plyer?  I saw an eg that applies to an
array but not to a dataframe:

lapply(split(dataset1$Height,dataset1$Group),shapiro.test)

Any thoughts would be much appreciated.

My dataframe is in shape:

dat       ACTIVIT  COUNTS
1/1/13   XXXX      43
..
..
1/31/13 XXXX    60
1/1/13   YYYY     40
..
..
1/31/13 YYYY  10
etc  going for 3 months.



--
View this message in context: http://r.789695.n4.nabble.com/How-to-perform-a-grouped-shapiro-wilk-test-on-dataframe-tp4663438.html
Sent from the R help mailing list archive at Nabble.com.