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Mat

2014-Feb-27 07:05 UTC

[R] find max value in different columns

Hello together,

i have a data.frame like this one:

ID    ONE   TWO   THREE
1     2       5        7
2     6       NA      NA
3     5       7        NA
4     1       NA      NA

Now i want a new column with the max-Value of "ONE", "TWO"
and THREE. The
result look like this one:

ID    ONE   TWO   THREE    MAX
1     2       5        7           7
2     6       NA      NA         6
3     5       7        NA         7
4     1       NA      NA         1

how can i do this?

thank you. Mat



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arun

2014-Feb-27 07:16 UTC

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[R] find max value in different columns

Hi,
Try:
dat <- read.table(text="ID??? ONE? TWO? THREE
1??? 2????? 5??????? 7
2??? 6????? NA????? NA
3??? 5????? 7??????? NA
4??? 1????? NA????? NA",sep="",header=TRUE)
dat1 <- dat

#Either:
dat$MAX <- apply(dat[,-1],1,max,na.rm=TRUE)


#or
?dat1$MAX <- do.call('pmax',c(dat1[,2:4],list(na.rm=TRUE)))
?identical(dat,dat1)
#[1] TRUE
A.K.




On Thursday, February 27, 2014 2:08 AM, Mat <matthias.weber at fnt.de>
wrote:
Hello together,

i have a data.frame like this one:

ID? ? ONE?  TWO?  THREE
1? ?  2? ? ?  5? ? ? ? 7
2? ?  6? ? ?  NA? ? ? NA
3? ?  5? ? ?  7? ? ? ? NA
4? ?  1? ? ?  NA? ? ? NA

Now i want a new column with the max-Value of "ONE", "TWO"
and THREE. The
result look like this one:

ID? ? ONE?  TWO?  THREE? ? MAX
1? ?  2? ? ?  5? ? ? ? 7? ? ? ? ?  7
2? ?  6? ? ?  NA? ? ? NA? ? ? ?  6
3? ?  5? ? ?  7? ? ? ? NA? ? ? ?  7
4? ?  1? ? ?  NA? ? ? NA? ? ? ?  1

how can i do this?

thank you. Mat



--
View this message in context:
http://r.789695.n4.nabble.com/find-max-value-in-different-columns-tp4685905.html
Sent from the R help mailing list archive at Nabble.com.

______________________________________________
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.

PIKAL Petr

2014-Feb-27 08:18 UTC

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[R] find max value in different columns

Hi

if I name your data frame to YDF

apply(YDF, 1, max, na.rm=FALSE)

shall find row max values. Jyst add them as new column.

Regards
Petr

> -----Original Message-----
> From: r-help-bounces at r-project.org [mailto:r-help-bounces at r-
> project.org] On Behalf Of Mat
> Sent: Thursday, February 27, 2014 8:06 AM
> To: r-help at r-project.org
> Subject: [R] find max value in different columns
>
> Hello together,
>
> i have a data.frame like this one:
>
> ID    ONE   TWO   THREE
> 1     2       5        7
> 2     6       NA      NA
> 3     5       7        NA
> 4     1       NA      NA
>
> Now i want a new column with the max-Value of "ONE",
"TWO" and THREE.
> The result look like this one:
>
> ID    ONE   TWO   THREE    MAX
> 1     2       5        7           7
> 2     6       NA      NA         6
> 3     5       7        NA         7
> 4     1       NA      NA         1
>
> how can i do this?
>
> thank you. Mat
>
>
>
> --
> View this message in context: http://r.789695.n4.nabble.com/find-max-
> value-in-different-columns-tp4685905.html
> Sent from the R help mailing list archive at Nabble.com.
>
> ______________________________________________
> 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.
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shilpi harpavat

2014-Feb-27 14:26 UTC

head link

[R] Time Series on Binary Data.

Hi,

I have a dichotomous data where some my independent variables are categorical,
some are continuous and some are binary(0/1)

My dependent is a binary response (Fail/NoFail,0/1) .

The data is some readings collected everyday over a period of time.

The goal is to use this data and see if we can figure out cause of failure ,the
end response.

Example data format

 

 

Date, Type,Mileage,S1,S2,S3.... , Response

03/02/2013,A,32000,1,0,1,......, 1

03/03/2013,B,32400,0,0,0,.......,0

03/04/2013,C,45000,0,1,1,......,1

 

Can we do Time series modeling?? Any suggesstions on what type of other
exploratory analysis can be used to figure out patterns in data ??

Thanks
shi
 		 	   		  
	[[alternative HTML version deleted]]

R help - Feb 2014 - find max value in different columns

[R] find max value in different columns

[R] find max value in different columns

[R] find max value in different columns

[R] Time Series on Binary Data.