Displaying 20 results from an estimated 2000 matches similar to: "Can a data.frame column contain lists/arrays?"
2010 Feb 14
2
Priv Sep SSH has / as CWD
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1
Hi,
This may or may not be a bug. However, it is DEFINITELY NOT how I would
expect and want to see sshd work!
If you run lsof against sshd on a privilege separated user, it shows
that sshd's CWD is /. I would hope that the CWD would be at a minimum
/var/empty/sshd and I would really have thought it would be something
along the lines of
2009 Mar 04
5
Filtering R lists
Hello
I am am new to R and any help with the following would be appreciated:
I have a list (example attached) and I would like to create a new list
which is a filtered version of this list. I.e I would like a list that
only contains elements with this value:
Chr 10 : 21853562 - 21855482
Any pointers/tips would be great.
Thanks!
Nikol
--
Bioinformatician/Computer Associate
Cambridge Institute
2011 Dec 02
2
Unexplained behavior of level names when using ordered factors in lm?
Hello dear all,
I am unable to understand why when I run the following three lines:
set.seed(4254)
> a <- data.frame(y = rnorm(40), x=ordered(sample(1:5, 40, T)))
> summary(lm(y ~ x, a))
The output I get includes factor levels which are not relevant to what I am
actually using:
Call:
> lm(formula = y ~ x, data = a)
> Residuals:
> Min 1Q Median 3Q Max
>
2007 Jul 25
2
using contrasts on matrix regressions (using gmodels, perhaps)
Hi,
I want to test for a contrast from a regression where I am regressing the columns of a matrix. In short, the following.
X <- matrix(rnorm(50),10,5)
Y <- matrix(rnorm(50),10,5)
lm(Y~X)
Call:
lm(formula = Y ~ X)
Coefficients:
[,1] [,2] [,3] [,4] [,5]
(Intercept) 0.3350 -0.1989 -0.1932 0.7528 0.0727
X1 0.2007 -0.8505 0.0520
2012 Jul 04
1
BDC Clients Unable to update DNS (PTR/A)
Hi;
Through samba4 BDC server not update DNS record in PDC DNS server. please
see logs
04-Jul-2012 10:22:19.800 client 192.253.8.25#1081: send
04-Jul-2012 10:22:19.800 client 192.253.8.25#1081: sendto
04-Jul-2012 10:22:19.800 client 192.253.8.25#1081: senddone
04-Jul-2012 10:22:19.800 client 192.253.8.25#1081: next
04-Jul-2012 10:22:19.800 client 192.253.8.25#1081: endrequest
04-Jul-2012
2006 Mar 11
2
IVR dial by extension option..
I'm working on an IVR that gives the users the option (number 5 in the main menu) to dial by extension:
exten => 5,1,Set(TIMEOUT(digit)=5) ; Dial Extension
exten => 5,2,Set(TIMEOUT(response)=10)
exten => 5,3,Background(LCL/prompt-60)
exten => 5,4,WaitExten(15)
When going option 5 you can dial some extensions such as 2802, it goes to the extension (all extens start with 28 on the
2007 May 04
1
subset
hello,
> subset(swiss, Agriculture > 60 & Examination != c(14,16), select = c(Agriculture,Examination,Catholic))
Agriculture Examination Catholic
Broye 70.2 16 3.30
Glane 67.8 14 4.20
Aigle 62.0 21 5.16
Avenches 60.7 19 5.23
Cossonay 69.3 22 5.62
2007 Jun 21
1
Distance function
Hello you all from the R Help mailing list!
I am working on a PowerBook with Mac Os X and use R 2.5.0.
I used the distance function from the analogue package to perform a
similarity analysis using the Gowers Index and weighted Variables.
My variables are bivariate data and measurements as well as interval
data transformed into minimum and maximum variables.
I used this Code:
2004 Sep 20
4
Multiple operations on list
Hello,
suppose I have a list with matrices:
a=list(x1=matrix(rnorm(10),5,2),x2=matrix(rnorm(10),5,2),x3=matrix(rnorm(10),5,2))
I want to compute for all combination of xi and xj (x1,x2 x1,x3 and x2,x3)
a value.
This value is given for the pair x1,x2 by trace(x1%*%t(x1)%*%x2%*%t(x2)) /
trace(x1%*%t(x1))*trace(x2%*%t(x2))
I know that product matrices t(xi)%*%xi can be obtained by:
2007 Oct 01
4
how to plot a graph with different pch
I am trying to plot a graph but the points on the graph should be
different symbols and colors. It should represent what is in the legend.
I tried using the points command but this does not work. Is there
another command in R that would allow me to use different symbols and
colors for the points?
Thank you kindly.
data(mtcars)
plot(mtcars$wt,mtcars$mpg,xlab= "Weight(lbs/1000)",
2020 Apr 16
6
suggestion: "." in [lsv]apply()
Hi,
I would like to make a suggestion for a small syntactic modification of
FUN argument in the family of functions [lsv]apply(). The idea is to
allow one-liner expressions without typing "function(item) {...}" to
surround them. The argument to the anonymous function is simply referred
as ".". Let take an example. With this new feature, the following call
2013 Apr 12
3
Why copying columns of a data.frame becomes numeric?
Dear list,
I want the 1st, 2nd, 5th, and 6th columns of mtcars. After copying them,
the columns become numeric class rather than data frame.
But, when I copy rows, they data frame retains its class. Why is this? I
don't see why copying rows vs columns is so different.
> class(mtcars)
[1] "data.frame"
> head(mtcars)
mpg cyl disp hp drat wt qsec vs
2006 Dec 05
1
sip_write warning when executing Pickup of CAPI
I'm trying to pick up a ringing SIP phone (203) across the office with
exten => *9,1,Pickup(783743)
where 783743 is the local part of the number that our ISDN works on.
I tried all of these first:
exten => *9,1,Pickup(203)
exten => *9,1,Pickup(SIP/203)
exten => *9,1,Pickup(203@internal)
and got a "declined" message back from my phone (snom 300), so I then
2010 Sep 16
2
question about converting a matrix to a dataframe
First I have a matrix called stocks1:
> class(stocks1)
[1] "matrix"
Here are the first 5 rows of the last 4 columns:
> stocks1[1:5,2:5]
[,1] [,2] [,3] [,4]
[1,] 80.73 31.95 25.4 25.69
[2,] 83.66 31.95 27.12 25.2
[3,] 83.27 32.93 28.74 26.29
[4,] 83.9 34.07 29.77 26.6
[5,] 82.74 35.18 30.24 27.41
Now, why can't I convert this into a dataframe?
2011 Jun 21
5
omitting columns from a data frame
Dear R People:
I have a data frame, xm1, which has 12 rows and 4 columns.
If I put is xm1[,-4], I get all rows, and columns 1 - 3, which is as
it should be.
Now, is there a way to use the names of the columns to omit them, please?
Thanks so much in advance!
Sincerely,
Erin
--
Erin Hodgess
Associate Professor
Department of Computer and Mathematical Sciences
University of Houston - Downtown
2012 Jul 26
5
Getting warning message
Hi Friends,
I have a data frame X, and I want to add ?%? & ?$? in row 4 and 5
respectively. when I?m trying using below logic, I?m getting warning
message.
Can anyone help me out on this.
X:
Summary G Y R T
Accts 582 644 0 1226
AcctCov 230 165 0 395
Cov% 40 26 0 32
UnCov% 60 74 0 68
EqVol11$MM8.5 10.6 0 19.1
Using this logic:
2012 Mar 15
2
Ggplot barchart drops factor levels: how to show them with zero counts?
Hello,
When plotting a barchart with ggplot it drops the levels of the factor for
which no counts are available.
For example:
library(ggplot)
mtcars$cyl<-factor(mtcars$cyl)
ggplot(mtcars[!mtcars$cyl==4,], aes(cyl))+geom_bar()
levels(mtcars[!mtcars$cyl==4,])
This shows my problem. Because no counts are available for factorlevel '4',
the label 4 dissapears from the plot. However, I
2010 Aug 04
3
retrieve name of an object?
Dear all
Is there an easier way to retrieve the name of an object? For example,
> tmp <- 1:10
> as.character(quote(tmp))
[1] "tmp"
> as.character(quote(mtcars$cyl))
[1] "$" "mtcars" "cyl"
> as.character(quote(mtcars$cyl))[3]
[1] "cyl"
The last call more than anything seems a hack. Is there a better way?
Thank you
Liviu
2011 Dec 13
1
How to add points to two plots parallelly ?
I am looking for ways to add points to three different plots in parallel.
I generate three scatter plots and name them as s3d1, s3d2 and s3d3
s3d1<-scatterplot3d(mtcars[,3],mtcars[,4],mtcars[,5],main="common",pch=20)
s3d2<-scatterplot3d(mtcars[,3],mtcars[,4],mtcars[,5],main="common",pch=20)
2020 Apr 16
2
suggestion: "." in [lsv]apply()
I'm sure this exists elsewhere, but, as a trade-off, could you achieve
what you want with a separate helper function F(expr) that constructs
the function you want to pass to [lsv]apply()? Something that would
allow you to write:
sapply(split(mtcars, mtcars$cyl), F(summary(lm(mpg ~ wt,.))$r.squared))
Such an F() function would apply elsewhere too.
/Henrik
On Thu, Apr 16, 2020 at 9:30 AM