Hi,
Still another way would be to count the levels of the factors (if it is
indeed a factor):
length(levels(example$V1))
Ivan
Le 12/8/2010 06:08, Jorge Ivan Velez a écrit :
Hi,
One way would be
example- read.table(textConnection(V1 V2
+ x y
+ y x
+ z b
+ a c
+ b j
+ d l
+ c
I think
?table
is what you want.
-- Bert
On Wed, Dec 8, 2010 at 1:19 AM, Ivan Calandra
ivan.calan...@uni-hamburg.de wrote:
Hi,
Still another way would be to count the levels of the factors (if it is
indeed a factor):
length(levels(example$V1))
Ivan
Le 12/8/2010 06:08, Jorge Ivan Velez
Dear All
If I have the following dataset
V1 V2
x y
y x
z b
a c
b j
d l
c o
How do I use R command to get the total number of different letter in column
V1
column V1 has 7 different letters.
Thank you
--
View this message in context:
Hi,
One way would be
example - read.table(textConnection(V1 V2
+ x y
+ y x
+ z b
+ a c
+ b j
+ d l
+ c o), header = TRUE)
closeAllConnections()
example
V1 V2
1 x y
2 y x
3 z b
4 a c
5 b j
6 d l
7 c o
with(example, length(unique(V1)))
[1] 7
with(example,
?unique
-Original Message-
From: r-help-boun...@r-project.org [mailto:r-help-boun...@r-project.org] On
Behalf Of zhiji19
Sent: Wednesday, 8 December 2010 2:57 PM
To: r-help@r-project.org
Subject: [R] Summing up Non-numeric column
Dear All
If I have the following dataset
V1 V2
x y
Thanks a lot
--
View this message in context:
http://r.789695.n4.nabble.com/Summing-up-Non-numeric-column-tp3077710p3077733.html
Sent from the R help mailing list archive at Nabble.com.
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