Dear all,
I would like to know how can I compute the length of a string in a dataframe.
Example:
SEQUENCE ID
TGCTCCCATCTCCACGGHR04FS00645
ACTGAACTCCCATCTCCAAT HR0595847847
I would like to know how to compute the length of each SEQUENCE.
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-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of João Fadista
Sent: Wednesday, 5 September 2007 11:51 PM
To: r-help@stat.math.ethz.ch
Subject: [R] length of a string
How's this?
x = data.frame(ID=c(asdf,asdfasdf),1:2)
x
ID X1.2
1 asdf1
2 asdfasdf2
nchar(as.character(x$ID))
[1] 4 8
Assuming ID is a factor, if not, you can remove the as.character().
On 9/5/07, João Fadista [EMAIL PROTECTED] wrote:
Dear all,
I would like to know
João Fadista wrote:
Dear all,
I would like to know how can I compute the length of a string in a dataframe.
Example:
SEQUENCE ID
TGCTCCCATCTCCACGGHR04FS00645
ACTGAACTCCCATCTCCAAT HR0595847847
I would like to know how to
On 9/5/07, João Fadista [EMAIL PROTECTED] wrote:
I would like to know how can I compute the length of a string in a dataframe.
Example:
SEQUENCE ID
TGCTCCCATCTCCACGGHR04FS00645
ACTGAACTCCCATCTCCAAT HR0595847847
I would like to know
Hi,
sapply(levels(df[,SEQUENCE]), nchar)
Where 'df' is your data.frame
--
Henrique Dallazuanna
Curitiba-Paraná-Brasil
25° 25' 40 S 49° 16' 22 O
On 05/09/07, João Fadista [EMAIL PROTECTED] wrote:
Dear all,
I would like to know how can I compute the length of a string in a
dataframe.
On 05-Sep-07 13:50:57, João Fadista wrote:
Dear all,
I would like to know how can I compute the length of a string in a
dataframe. Example:
SEQUENCE ID
TGCTCCCATCTCCACGGHR04FS00645
ACTGAACTCCCATCTCCAAT HR0595847847
I would like
As long as you keep in mind Prof. Ripley's comment, you're going to
be fine with nchar().
http://tolstoy.newcastle.edu.au/R/e2/devel/07/05/3450.html
Remember that what you want exactly is given by nchar(obj,
type=chars), which is **NOT** the default on R 2.5.1 (only on
R-2.6.0).
In your
