t1[,1]),sum))
# V1 x
#1 0 12
#2 1 40
#3 2 64
#4 3 111
#5 4 63
A.K.
- Original Message -
From: T Bal
To: r-help@r-project.org
Cc:
Sent: Tuesday, December 4, 2012 2:59 AM
Subject: [R] question about sum of (column) elements in R
Hi,
I have the following data:
0 12
1
From: r-help-boun...@r-project.org [mailto:r-help-boun...@r-project.org] On
Behalf Of T Bal
Sent: 04 December 2012 07:59
To: r-help@r-project.org
Subject: [R] question about sum of (column) elements in R
Hi,
I have the following data:
0 12
1 10
1 4
1 6
1 7
1 13
2 21
2 23
2
On 04-12-2012, at 08:59, T Bal wrote:
> Hi,
> I have the following data:
>
> 0 12
> 1 10
> 1 4
> 1 6
> 1 7
> 1 13
> 2 21
> 2 23
> 2 20
> 3 18
> 3 17
> 3 16
> 3 27
> 3 33
> 4 11
> 4 8
> 4 19
> 4 16
> 4 9
>
>
> In this data file I would like to sum the numbe
Hi, T. Bal,
homework? Take a look at
?tapply
Regards -- Gerrit
On Tue, 4 Dec 2012, T Bal wrote:
Hi,
I have the following data:
0 12
1 10
1 4
1 6
1 7
1 13
2 21
2 23
2 20
3 18
3 17
3 16
3 27
3 33
4 11
4 8
4 19
4 16
4 9
In this data file I would lik
Hi,
You can follow this example:
test <- structure(list(V1 = c(0L, 1L, 1L, 1L, 1L, 1L, 2L, 2L, 2L, 3L,
3L, 3L, 3L, 3L, 4L, 4L, 4L, 4L, 4L), V2 = c(12L, 10L, 4L, 6L,
7L, 13L, 21L, 23L, 20L, 18L, 17L, 16L, 27L, 33L, 11L, 8L, 19L,
16L, 9L)), .Names = c("V1", "V2"), class = "data.frame", row.names =
Hi,
I have the following data:
0 12
1 10
1 4
1 6
1 7
1 13
2 21
2 23
2 20
3 18
3 17
3 16
3 27
3 33
4 11
4 8
4 19
4 16
4 9
In this data file I would like to sum the numbers of second column which
belong to the same number in the first column.
So the output wou
6 matches
Mail list logo
