Hi Jim,

 

Thanks alots for helping me. Is it possible to get the any percentile
without using library?

 

Thanks

-Antony.

 

From: Jim Lemon [via R]
[mailto:ml-node+s789695n4636272h70@n4.nabble.com] 
Sent: Thursday, July 12, 2012 2:46 PM
To: Akkara, Antony (GE Energy, Non-GE)
Subject: Re: MODE , VARIANCE , NTH PERCENTAILE

 

On 07/11/2012 05:38 PM, Rantony wrote: 


> Hi, 
> Here i have an matrix like this, 
> 
> ABC    PQR    XYZ   MNO 
> ------   -------   ------   -------- 
> 3            6        7          15 
> 2          12        24        15 
> 20         5         1           2 
> 25          50      15         35 
> 
> i need to get the 
>                                        "MODE" - for each column-wise 
>                                        "VARIANCE" - for each
column-wise 
>                                        "25TH-PERCENTAILE" -for each 
> column-wise 
> 
> i tried alots, and it was difficult to get. Someone can help me out
please ? 
> 

Hi Rantony, 
Try this: 

testdat<-matrix(c(3,2,20,25,6,12,5,50,7,24,1,15,15,15,2,35),nrow=4) 
colnames(testdat)<-c("ABC","PQR","XYZ","MNO") 
library(prettyR) 
# make a function for 25th percentile 
q25<-function(x,na.rm) return(quantile(x,prob=0.25,na.rm=na.rm)) 
testdesc<-describe(testdat,num.desc=c("Mode","var","q25"),xname="testdat
") 
print(testdesc) 

Note that the values in the data frame "testdesc" are numeric, except 
for the first column, as there are text messages that no mode exists for

columns ABC, PQR and XYZ. When "testdesc" is printed, it is converted to

a matrix, which coerces everything to character type. 

Jim 

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