R help - Jun 2011 - Counting the Number of Letters in a row

I'm trying to find the total number of letters in a row of a data frame.

Let's say I have the following data frame.

f1 <- data.frame(keyword=c("I live in Denver", I live in Kansas
City, MO",
"Pizza is good"))

The following function gives me the number of characters in each string.
So for "I live in Denver", I get 1, 4, 2, and 6. However, I want to
know the
total
number of characters (13).

sapply(strsplit(as.character(f1$keyword), " "), nchar)


Thanks,
Abraham

	[[alternative HTML version deleted]]

something like this:
sapply(strsplit(as.character(
f1$keyword), " "), function(x){sum(nchar(x))})
hth, Ingmar


On Fri, Jun 10, 2011 at 6:48 PM, Abraham Mathew
<abraham@thisorthat.com>wrote:
> I'm trying to find the total number of letters in a row of a data
frame.
>
> Let's say I have the following data frame.
>
> f1 <- data.frame(keyword=c("I live in Denver", I live in
Kansas City, MO",
> "Pizza is good"))
>
> The following function gives me the number of characters in each string.
> So for "I live in Denver", I get 1, 4, 2, and 6. However, I want
to know
> the
> total
> number of characters (13).
>
> sapply(strsplit(as.character(f1$keyword), " "), nchar)
>
>
> Thanks,
> Abraham
>
>        [[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.
>
	[[alternative HTML version deleted]]

Hi Abraham,

Try

foo <- function(x){
x <- as.character(x)
 sapply(strsplit(x, " "), function(s) sum(nchar(s)))
}
foo(f1$keyword)

HTH,
Jorge


On Fri, Jun 10, 2011 at 12:48 PM, Abraham Mathew <> wrote:
> I'm trying to find the total number of letters in a row of a data
frame.
>
> Let's say I have the following data frame.
>
> f1 <- data.frame(keyword=c("I live in Denver", I live in
Kansas City, MO",
> "Pizza is good"))
>
> The following function gives me the number of characters in each string.
> So for "I live in Denver", I get 1, 4, 2, and 6. However, I want
to know
> the
> total
> number of characters (13).
>
> sapply(strsplit(as.character(f1$keyword), " "), nchar)
>
>
> Thanks,
> Abraham
>
>        [[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.
>
	[[alternative HTML version deleted]]