Displaying 20 results from an estimated 3000 matches similar to: "creating a count variable in R"
2011 Feb 14
3
how to order POSIXt objects ?
I have a problem ordering by descending magnitude a POSIXt object. Can
someone help please and let me know how to work around this. My goal is to
be able to order my data by DATE and then by descending TIME.
I have tried to include as much info as possible below. The problem stems
from trying to read in times from a CSV file. I have converted the character
time values to a POSIXt object using the
2016 Aug 12
2
loosing audio from one end after 5 min.
Hi
Is the keep alive activated on the phone?
On Thu, Aug 11, 2016, 5:36 PM Dovid Bender <dovid at telecurve.com> wrote:
> 1) Does it happen every time at the 5 minute work?
> 2) Have you done a dump on the client side to see if the NAT device is
> dropping the packets?
> 3) Is the phone behind a load balance internet connection and is the RTP
> port changing?
>
>
>
2009 Jan 05
1
X11 on Dell D830 with latest 7.1-PRERELEASE
Hi,
I've got a Dell Latitude D830 running 7.1-PRERELEASE/amd64 which I've
just csup'd to the -STABLE as of 5-Jan-2009, and after going thru' the
std build+install; XOrg now comes up with a blank screen, sometimes
interspersed with green dots. I did test out X prior to doing an
installworld, and that came up with no problems. However, after doing
an installworld, X is now broken.
2016 Aug 11
2
loosing audio from one end after 5 min.
Hi all,
Just installed Asterisk 13 on CentOS 7 and have run into a problem.
The Scenario is this:
Asterisk is on the internet
the Phone, a D40, is behind NAT
So someone calls the number and Asterisk routes the call to the D40
Everything works fine and the call is established, but then after 5 min.
the caller stops getting audio from the D40 but there is still audio to
the D40.
using both
2011 May 16
2
conditional rowsums in sapply
Hi all
I have a data frame with duplicate columns and i want to remove duplicates
by adding rows in each group of duplicates, but have lots of NA's.
Data:
dfrm <- data.frame(a = 1:4, b= 1:4, cc= 1:4, dd=1:10, ee=1:4)
names(dfrm) <- c("a", "a", "b", "b", "b")
dfrm[3,2:3]<-NA
dfrm
a a b b b
1 1 1 1 1 1
2 2 2 2 2 2
3
2011 Jan 31
2
From data frame to list object
Dear all, let say I have following data frame:
> data.frame(x=rnorm(18), y=rep(c("a", "b", "c"), each=6))
x y
1 -1.072152537 a
2 0.382985265 a
3 0.058877377 a
4 -0.006911939 a
5 -2.355269051 a
6 -0.303095553 a
7 0.484038422 b
8 0.733928931 b
9 -1.136014346 b
10 0.503552090 b
11 1.708609658 b
12 -0.294599403 b
13
2011 Jan 31
2
Missing at random
R users:
Thanks in advance
How to generate missing at random (MAR)?
assaedi76@yahoo.com
Thanks
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2013 Mar 06
2
Fwd: How to conditionally remove dataframe rows?
Hi,
I have a data frame with two columns. I need to remove duplicated rows in
first column, but I need to do it conditionally to values of the second
column.
Example:
Point_counts Psi_Sp
1 A 0
2 A 1
3 B 1
4 B 2
5 B 0
2011 Jul 15
3
summarized data set - how to use an "occurs" field
I have a data set with 22 fields and several thousand records in which
one field (count) indicates the number of times that each specific
combination of the other 21 fields occurred in a bigger and largely
unavailable data set.
So each record is unique in its combination of field values and has a
field that identifies how many multiples of this record actually
occurred.
Without resorting to
2012 Mar 18
3
Extracting numbers from a character variable of different types
Hello,
I have a file which contains a column with age, which is represented in the
two following patterns
1. "007/A" or ''007/a" or ''7 /a" ..... In this case A or a means year and I
would like to extract only the numeric values eg 7 in the above case if this
pattern exits in a line of file.
2. "004/M" or "004/m" where M or m means month
2003 Apr 23
3
top failure
Hello gentlemen,
I've discovered an interesting failure on some machine running
4.7. It's so weird so I'd very unlikely notice it at all, but
thanks to top(1): when launched, instead of displaying some
useful figures it exits with an error: "top: nlist failed".
>From quick look it appears that kvm_nlist() returns NULL for
nlst[0].n_type. Strange, ignoring; next exit point
2013 Mar 11
2
how to convert a data.frame to tree structure object such as dendrogram
I have a data.frame object like:
> data.frame(x=c('A','A','B','B'), y=c('Ab','Ac','Ba','Bd'))
x y
1 A Ab
2 A Ac
3 B Ba
4 B Bd
how could I create a tree structure object like this:
|---Ab
A---|
_| |---Ac
|
| |---Ba
B---|
|---Bb
Thanks,
Zech
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2011 Mar 12
2
Merge data under conditions
Dear All,
Debuting in R, I'm facing a problem.
I have 2 vectors, say 'a' et 'b', and I'd like to merge them according to
the proximity of their variable 'time'.
How to do to keep elements which satisfy (for example) 'a$time-b$time<0.5'?
For example :
> a
time x
1 1.0 4
2 2.2 5
3 5.2 6
> b
time y
1 0 1
2 1 3
3 2 5
4 4 7
5
2010 Mar 16
2
Conditional variable assignment
Hi everyone,
Once again I am stuck with a problem I can't seem to figure out. I suppose this learning curve levels off eventually, lol. I am learning on my own with absolutely no background in programming, so if I seem to request help a lot it's not because I am seeking others to do the work for me. I need to assign one of two arrival times to the 'ARRIVE' variable of my
2003 May 09
1
windows data editor changes dimensions displayed data frames
dear R-tists,
i am experiencing a problem with the data editor in the windows version of
R 1.6.1 envoked with the command 'fix'.
the data editor changes the size of large data frames.
a simple example illustrates this:
-------------------------------------------------------
> dfrm <- data.frame(no=c(1:100000))
> length(dfrm[,1])
[1] 100000
> fix(dfrm)
>
2011 Jul 01
4
Access only part of last dimension of table/matrix
I would like to do some operations inside a function using only one
value for the last dimension of a table/matrix:
tabfn <- function (dfrm, facvec, YN ="event"){
return( Etbl <- do.call(table, dfrm[ , c(facvec,
"event") ]) )
# just want Etbl[,,,"TRUE"] or Etbl[,, "TRUE"] or
Etbl[,"TRUE"]
}
2005 Dec 01
1
Kalman Smoothing - time-variant parameters (sspir)
Dear R-brains,
I'm rather new to state-space models and would benefit from the extra
confidence in using the excellent package sspir.
In a one-factor model, If I am trying to do a simple regression where
I assume the intercept is constant and the 'Beta' is changing, how do
I do that? How do i Initialize the filter (i.e. what is appropriate to
set m0, and C0 for the example below)?
2010 Dec 24
4
Removing rows with earlier dates
Hi all,
I'm new to the list but have benfited from it quite extensively. Straight to
my rather strange question:
I have a data frame that contains mapping rules in this way:
ACCOUNT, RULE COLUMNS, Effective Date
The dataframe comes from a database that stores all dates. What I would like
to do is to create a data frame with only the most recent rule for each
account. In traditional
2012 May 16
2
Splus equivalent of reshape in R
Hello R/Splus users..
I am posting in R discussion group in hope of wider response compared to
what I received from Splus user groups....
Was wondering if there is any function available in Splus 8.2 that is
equivalent to "reshape" of R?
Below is a sample dataset. Size [both rows and columns) of the dataset may
vary
X1 Y1 Y2 Y3
0.25 40 38 22
0.5 44 41
2012 Feb 15
2
Splitting a data list into smaller data lists
Hi, I am new at R and have been looking for a guide on how to do this with no
avail. I have a data set similar to this:
X Y
1 2
3 3
4 9
2 4
6 3
9 1
1 7
0 2
5 6
3 8
and I need it to be split into something like this:
X Y
1 2
3 3
4 9
2 4
6 3
X Y
9 1
1 7
0 2
5 6
3 8
I am thinking I need to write a loop because my data set is much larger than
this