Hi,
Try this:a<-c(4,5,23,34,43,54,56,65,67,324,435,453,456,567,657)
a1<-melt(table(cut(a,breaks=c(0,10,20,30,60,120,240,480,960))))
a2<-data.frame(sapply(a1,function(x) gsub("\\(|\\]","",gsub("\\,","-",x))))
colnames(a2)<-c("numbers","Freq")
a2
# numbers Freq
#1 0-10 2
#2 10-20 0
#3 20-30 1
#4 30-60 4
#5 60-120 2
#6 120-240 0
#7 240-480 4
#8 480-960 2
#You can also get the same result by:
a1<-as.data.frame(table(cut(a,breaks=c(0,10,20,30,60,120,240,480,960),labels=c("0-10","10-20","20-30","30-60","60-120","120-240","240-480","480-960")))
)
colnames(a1)<-c("numbers","Freq")
a1
A.K.
----- Original Message -----
From: Chintanu <chint...@gmail.com>
To: r-help@r-project.org
Cc:
Sent: Thursday, July 26, 2012 9:22 PM
Subject: [R] Counting frequency within each range
Hi,
This is a simple problem, but for the life of me I cannot find the answer.
How to determine frequency within given ranges ?
I know that table() gives frequency, for example
a <- table(numbers)
> a
numbers
4 5 23 34 43 54 56 65 67 324 435 453 456 567 657
2 1 2 2 1 1 2 1 2 1 3 1 1 1 1
> as.data.frame(table(numbers))
numbers Freq
1 4 2
2 5 1
3 23 2
4 34 2
...
However, there must be some simple way to get the frequency based on
ranges, such as 0-10, 10-20, 20-30 and so on.
Please help !
Thank you.
Cheers,
Chintanu
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