Re: [R] Counting various elemnts in a vactor
Hi,
library(plyr)
df1<-count(df)
rep(df1[,1],df1[,2]*100)
count(as.character(rep(df1[,1],df1[,2]*100)))
# x freq
#1 A 200
#2 B 200
#3 C 200
#4 D 400
#5 F 400
A.K.
- Original Message -
From: Katherine Gobin
To: r-help@r-project.org
Cc:
Sent: Tuesday, March 26, 2013 4:12 AM
Subject: [R] Counting various elemnts in a vactor
Dear R forum
I have a vector say as given below
df = c("F", "C", "F", "B", "D", "A", "D", "D", "A", "F", "D", "F", "B", "C")
I need to find
(1) how many times each element occurs? e.g. in above vector F occurs 4 times,
C occurs 2 times etc.
(2) Depending on the number of occurrences, I need to repeat the element 100
times of the occurrences e.g. I need to repeat F 6 * 100 = 600 times, C 2*100 =
200 times.
I can manage the second part i.e. repeating but I am not able to count the
number of times the element is appearing in a given vector.
Kindly guide
Katherine
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Re: [R] Counting various elemnts in a vactor
Dear Sir,
Thanks a lot for your great help. I couldn't have figured it out.
Thanks again.
Regards
Katherine
--- On Tue, 26/3/13, D. Rizopoulos wrote:
From: D. Rizopoulos
Subject: Re: [R] Counting various elemnts in a vactor
To: "Katherine Gobin"
Cc: "r-help@r-project.org"
Date: Tuesday, 26 March, 2013, 8:23 AM
try this:
df <- c("F", "C", "F", "B", "D", "A", "D", "D", "A", "F", "D", "F", "B",
"C")
tab <- table(df)
tab
rep(names(tab), 100 * tab)
I hope it helps.
Best,
Dimitris
On 3/26/2013 9:12 AM, Katherine Gobin wrote:
> Dear R forum
>
> I have a vector say as given below
>
> df = c("F", "C", "F", "B", "D", "A", "D", "D", "A", "F", "D", "F", "B",
> "C")
>
> I need to find
>
> (1) how many times each element occurs? e.g. in above vector F occurs 4
> times, C occurs 2 times etc.
>
> (2) Depending on the number of occurrences, I need to repeat the element 100
> times of the occurrences e.g. I need to repeat F 6 * 100 = 600 times, C 2*100
> = 200 times.
>
> I can manage the second part i.e. repeating but I am not able to count the
> number of times the element is appearing in a given vector.
>
> Kindly guide
>
> Katherine
>
>
>
>
>
>
>
>
>
>
>
> [[alternative HTML version deleted]]
>
>
>
> __
> R-help@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.
>
--
Dimitris Rizopoulos
Assistant Professor
Department of Biostatistics
Erasmus University Medical Center
Address: PO Box 2040, 3000 CA Rotterdam, the Netherlands
Tel: +31/(0)10/7043478
Fax: +31/(0)10/7043014
Web: http://www.erasmusmc.nl/biostatistiek/
[[alternative HTML version deleted]]
__
R-help@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.
Re: [R] Counting various elemnts in a vactor
try this:
df <- c("F", "C", "F", "B", "D", "A", "D", "D", "A", "F", "D", "F", "B",
"C")
tab <- table(df)
tab
rep(names(tab), 100 * tab)
I hope it helps.
Best,
Dimitris
On 3/26/2013 9:12 AM, Katherine Gobin wrote:
> Dear R forum
>
> I have a vector say as given below
>
> df = c("F", "C", "F", "B", "D", "A", "D", "D", "A", "F", "D", "F", "B",
> "C")
>
> I need to find
>
> (1) how many times each element occurs? e.g. in above vector F occurs 4
> times, C occurs 2 times etc.
>
> (2) Depending on the number of occurrences, I need to repeat the element 100
> times of the occurrences e.g. I need to repeat F 6 * 100 = 600 times, C 2*100
> = 200 times.
>
> I can manage the second part i.e. repeating but I am not able to count the
> number of times the element is appearing in a given vector.
>
> Kindly guide
>
> Katherine
>
>
>
>
>
>
>
>
>
>
>
> [[alternative HTML version deleted]]
>
>
>
> __
> R-help@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.
>
--
Dimitris Rizopoulos
Assistant Professor
Department of Biostatistics
Erasmus University Medical Center
Address: PO Box 2040, 3000 CA Rotterdam, the Netherlands
Tel: +31/(0)10/7043478
Fax: +31/(0)10/7043014
Web: http://www.erasmusmc.nl/biostatistiek/
__
R-help@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.
[R] Counting various elemnts in a vactor
Dear R forum
I have a vector say as given below
df = c("F", "C", "F", "B", "D", "A", "D", "D", "A", "F", "D", "F", "B", "C")
I need to find
(1) how many times each element occurs? e.g. in above vector F occurs 4 times,
C occurs 2 times etc.
(2) Depending on the number of occurrences, I need to repeat the element 100
times of the occurrences e.g. I need to repeat F 6 * 100 = 600 times, C 2*100 =
200 times.
I can manage the second part i.e. repeating but I am not able to count the
number of times the element is appearing in a given vector.
Kindly guide
Katherine
[[alternative HTML version deleted]]
__
R-help@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.
