Displaying 4 results from an estimated 4 matches for "plyer".
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2009 Mar 13
4
Sorting rows of a matrix independent of each other
Oh, this seemed so simple (and I'm sure the answer will be, as usual, so
thanks in advance for enlightening me). I need to sort each row of a matrix
independent of the others. For example,
> test <- matrix(c(8,7,1,2,6,5,9,4,3),nrow=3)
> test
[,1] [,2] [,3]
[1,] 8 2 9
[2,] 7 6 4
[3,] 1 5 3
I can get each row sorted well enough.
> sort(test[1,])
[1]
2013 Apr 05
2
How to perform a grouped shapiro wilk test on dataframe
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...
2013 Apr 03
5
Can package plyr also calculate the mode?
I am trying to replicate the SAS proc univariate in R. I got most of the
stats I needed for a by grouping in a data frame using:
all1 <- ddply(all,"ACT_NAME", summarise, mean=mean(COUNTS), sd=sd(COUNTS),
q25=quantile(COUNTS,.25),median=quantile(COUNTS,.50),
q75=quantile(COUNTS,.75),
q90=quantile(COUNTS,.90), q95=quantile(COUNTS,.95),
q99=quantile(COUNTS,.99) )
2001 Nov 26
3
Encoding or Playback problem?
Hi all,
Have trouble encoding / playing back OGG using WinAmp + plugin. I encoded
the files from .WAV with Ogg drop RC2. Seems to be ok. When I try and play
them back though I get very very weird sound effects (some kind of
"wobbling", some bass frequencies that are usually in the background seem to
get more emphasised and they seem to have some kind of strange echo / reverb
to it