Re: [R] MODE , VARIANCE , NTH PERCENTAILE

2012-07-12 Thread Jim Lemon 

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

Hi,
Here i have an matrix like this,

ABCPQRXYZ   MNO
--   ---   --   
367  15
2  122415
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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Re: [R] MODE , VARIANCE , NTH PERCENTAILE

2012-07-12 Thread Rantony 
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+s789695n4636272...@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, 
 
 ABCPQRXYZ   MNO 
 --   ---   --    
 367  15 
 2  122415 
 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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[R] MODE , VARIANCE , NTH PERCENTAILE

2012-07-11 Thread Rantony 
Hi,
Here i have an matrix like this,

ABCPQRXYZ   MNO
--   ---   --   
367  15
2  122415
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 ?

- Antony


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Re: [R] MODE , VARIANCE , NTH PERCENTAILE

2012-07-11 Thread Rantony 
Thank you chamilka. 

 

From: chamilka [via R] [mailto:ml-node+s789695n4636142...@n4.nabble.com]

Sent: Wednesday, July 11, 2012 8:13 PM
To: Akkara, Antony (GE Energy, Non-GE)
Subject: Re: MODE , VARIANCE , NTH PERCENTAILE

 

Din't you try sapply function? 
I tried it for you. 
Just convert your matrix into a data frame using as.data.frame and then 
 rantony
 ABC PQR XYZ MNO 
[1,]   3   6   7  15 
[2,]   2  12  24  15 
[3,]  20   5   1   2 
[4,]  25  50  15  35 

 rantony=as.data.frame(rantony)

 sapply(rantony,var) #calculates column wise variance 
  ABC   PQR   XYZ   MNO 
137.7 457.58333  99.58333 185.58333 

 sapply(rantony,Mode)  #calculates column vise Mode, where the mode
function is available in prettyR
http://cran.r-project.org/web/packages/prettyR/index.html  package 
  ABC   PQR   XYZ   MNO 
1 mode 1 mode 1 mode  15 
# the above means there are no modes in first three columns and in the
last column Mode is 15 
 sapply(rantony,quantile) 
   ABC   PQR   XYZ   MNO 
0%2.00  5.00  1.00  2.00 
25%   2.75  5.75  5.50 11.75 
50%  11.50  9.00 11.00 15.00 
75%  21.25 21.50 17.25 20.00 
100% 25.00 50.00 24.00 35.00 



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Re: [R] MODE , VARIANCE , NTH PERCENTAILE

2012-07-11 Thread chamilka 
Din't you try sapply function?
I tried it for you. 
Just convert your matrix into a data frame using as.data.frame and then 
* rantony*
 ABC PQR XYZ MNO
[1,]   3   6   7  15
[2,]   2  12  24  15
[3,]  20   5   1   2
[4,]  25  50  15  35

* rantony=as.data.frame(rantony)*

* sapply(rantony,var)* #calculates column wise variance
  ABC   PQR   XYZ   MNO 
137.7 457.58333  99.58333 185.58333 

* sapply(rantony,Mode)*  #calculates column vise Mode, where the mode
function is available in
http://cran.r-project.org/web/packages/prettyR/index.html  prettyR  package
  ABC   PQR   XYZ   MNO 
1 mode 1 mode 1 mode  15 
# the above means there are no modes in first three columns and in the last
column Mode is 15
 sapply(rantony,quantile) 
   ABC   PQR   XYZ   MNO
0%2.00  5.00  1.00  2.00
25%   2.75  5.75  5.50 11.75
50%  11.50  9.00 11.00 15.00
75%  21.25 21.50 17.25 20.00
100% 25.00 50.00 24.00 35.00

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Re: [R] MODE , VARIANCE , NTH PERCENTAILE

2012-07-11 Thread arun 
Hi,

Just try: dat4-read.table(text=
 ABC PQR XYZ MNO
   3  6  7  15
   2  12  24  15
   20  5  1  2
  25  50  15  35 
 ,sep=,header=TRUE)
 apply(dat4,2,quantile)
 
 apply(dat4,2,var) 

#For mode calculation, use package ?modalvalue {rattle}
A.K.

,



- Original Message -
From: Rantony antony.akk...@ge.com
To: r-help@r-project.org
Cc: 
Sent: Wednesday, July 11, 2012 3:38 AM
Subject: [R] MODE , VARIANCE , NTH PERCENTAILE

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 ?

- Antony                                        


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