.
- Original Message -
From: Camilo Mora cm...@dal.ca
To: r-help@r-project.org
Cc:
Sent: Tuesday, July 24, 2012 2:48 AM
Subject: [R] First value in a row
Hi.
This is likely a trivial problem but have not found a solution. Imagine the
following dataframe:
Lat Lon x1 x2
, 2012 2:48 AM
Subject: [R] First value in a row
Hi.
This is likely a trivial problem but have not found a solution. Imagine the
following dataframe:
Lat Lon x1 x2 x3
01 10 NA NA .1
01 11 NA .2 .3
01 12 .4 .5 .6
I want to generate another column
Mora cm...@dal.ca
To: r-help@r-project.org
Cc:
Sent: Tuesday, July 24, 2012 2:48 AM
Subject: [R] First value in a row
Hi.
This is likely a trivial problem but have not found a solution. Imagine the
following dataframe:
Lat Lon x1 x2 x3
01 10 NA NA .1
01 11 NA .2
...@dal.ca
To: r-help@r-project.org
Cc:
Sent: Tuesday, July 24, 2012 2:48 AM
Subject: [R] First value in a row
Hi.
This is likely a trivial problem but have not found a solution. Imagine
the following dataframe:
Lat Lon x1 x2 x3
01 10 NA NA .1
01 11 NA .2 .3
01
Hi.
This is likely a trivial problem but have not found a solution.
Imagine the following dataframe:
Lat Lon x1 x2 x3
0110 NA NA .1
0111 NA .2 .3
0112 .4 .5 .6
I want to generate another column that consist of the first value in
each row from columns x1 to
Hi Camilo,
as you want to work on all rows, apply() is your friend.
In the following, I use an anonymous function getting the first non-na
value while looping over each row:
dat - read.table(text =
Lat Lon x1 x2 x3
0110 NA NA .1
0111 NA .2 .3
0112 .4 .5 .6
,
x3 NewColumn
1 1 10 NA NA 0.1 0.1
2 1 11 NA 0.2 0.3 0.2
3 1 12 0.4 0.5 0.6 0.4
A.K.
- Original Message -
From: Camilo Mora cm...@dal.ca
To: r-help@r-project.org
Cc:
Sent: Tuesday, July 24, 2012 2:48 AM
Subject: [R] First value in a row
Hi
-project.org
Cc:
Sent: Tuesday, July 24, 2012 2:48 AM
Subject: [R] First value in a row
Hi.
This is likely a trivial problem but have not found a solution. Imagine the
following dataframe:
Lat Lon x1 x2 x3
0110 NA NA .1
0111 NA .2 .3
0112 .4 .5 .6
I want to generate
Message-
From: r-help-boun...@r-project.org [mailto:r-help-boun...@r-project.org] On
Behalf Of Henrik Singmann
Sent: Tuesday, July 24, 2012 1:40 AM
To: r-h...@stat.math.ethz.ch
Subject: Re: [R] First value in a row
Hi Camilo,
as you want to work on all rows, apply() is your friend
NA 0.1 0.1
2 1 11 NA 0.2 0.3 0.2
3 1 12 0.4 0.5 0.6 0.4
A.K.
- Original Message -
From: Camilo Mora cm...@dal.ca
To: r-help@r-project.org
Cc:
Sent: Tuesday, July 24, 2012 2:48 AM
Subject: [R] First value in a row
Hi.
This is likely a trivial problem
0.4 0.5 0.6 0.4
A.K.
- Original Message -
From: Camilo Mora cm...@dal.ca
To: r-help@r-project.org
Cc:
Sent: Tuesday, July 24, 2012 2:48 AM
Subject: [R] First value in a row
Hi.
This is likely a trivial problem but have not found a solution.
Imagine the following dataframe
.
- Original Message -
From: Camilo Mora cm...@dal.ca
To: r-help@r-project.org
Cc:
Sent: Tuesday, July 24, 2012 2:48 AM
Subject: [R] First value in a row
Hi.
This is likely a trivial problem but have not found a solution.
Imagine the following dataframe:
Lat Lon x1
Hi,
I've a vector like this:
inc
[1]NANANANANANANA
[8]NANANANANANANA
[15]NANANANANANANA
[22]NANA
Try this:
which(diff(is.na(inc)) 0)
On Tue, Jun 23, 2009 at 11:00 AM, Alfredo Alessandrini alfreal...@gmail.com
wrote:
Hi,
I've a vector like this:
inc
[1]NANANANANANANA
[8]NANANANANA
Now is ok...thanks.
Alfredo
2009/6/23 Alfredo Alessandrini alfreal...@gmail.com:
I've the NA value also between the value of the vector:
inc
[1] NA NA NA NA NA NA NA
[8] NA NA NA NA NA NA NA
On Jun 23, 2009, at 10:00 AM, Alfredo Alessandrini wrote:
Hi,
I've a vector like this:
inc
[1]NANANANANA
NANA
[8]NANANANANA
NANA
[15]NANANANA
I've the NA value also between the value of the vector:
inc
[1]NANANANANANANA
[8]NANANANANANANA
[15]NANANANANANANA
[22]
Alfredo Alessandrini wrote:
Hi,
I've a vector like this:
inc
[1]NANANANANANANA
[8]NANANANANANANA
[15]NANANANANANA
On Tue, Jun 23, 2009 at 04:00:21PM +0200, Alfredo Alessandrini wrote:
I've a vector like this:
inc
[1]NANANANANANANA
[8]NANANANANANANA
[15]NANANA
Alfredo Alessandrini
Gesendet: Tuesday, June 23, 2009 10:00 AM
An: r-help@r-project.org
Betreff: [R] first value...
Hi,
I've a vector like this:
inc
[1]NANANANANANANA
[8]NANANANANANA
You can use this:
inc[which(!is.na(inc))[1]]
On Tue, Jun 23, 2009 at 11:08 AM, Alfredo Alessandrini alfreal...@gmail.com
wrote:
I've the NA value also between the value of the vector:
inc
[1]NANANANANANANA
[8]NANA
I think what you mean is that you want to find the position of the first
non-NA value in the vector. is.na returns a boolean vector of the NA
values, so:
xx - c(NA,NA,NA,2,3,NA,4)
which(!is.na(xx))[1]
[1] 4
The other proposed solution,
which(diff(is.na(inc)) 0)
is incorrect:
Hi
r-help-boun...@r-project.org napsal dne 23.06.2009 16:04:49:
Try this:
which(diff(is.na(inc)) 0)
Shall it be
which(diff(is.na(inc)) 0)+1
or
sum(is.na(inc))+1
or any other suitable construct with is.na
Regards
Petr
On Tue, Jun 23, 2009 at 11:00 AM, Alfredo Alessandrini
The various which(is.na) sort of things are fine, but this problem is
just screaming to be solved with rle().
Just do rle(is.na(inc))$lengths[1]+1
On Tue, Jun 23, 2009 at 11:00 AM, Alfredo Alessandrini
alfreale74 at gmail.com
wrote:
Hi,
I've a vector like this:
inc
[1]
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