Displaying 20 results from an estimated 5000 matches similar to: "Clustered standard errors in a panel"
2005 Jun 25
1
group means: split and unsplit
Took me a while but I figured out how to put in common values of
group means/counts, etc. to do the same thing as egen. lapply with
split and then unsplit.
Thomas Davidoff
Assistant Professor
Haas School of Business
UC Berkeley
Berkeley, CA 94720
phone: (510) 643-1425
fax: (510) 643-7357
davidoff@haas.berkeley.edu
http://faculty.haas.berkeley.edu/davidoff
[[alternative HTML
2005 May 31
1
Tiger problems
I get the following when I try to run R from the terminal (I think ok
from the gui, but not what I want to do):
dyld: Symbol not found: __cg_jpeg_resync_to_restart
Referenced from: /System/Library/Frameworks/
ApplicationServices.framework/Versions/A/Frameworks/ImageIO.framework/
Versions/A/ImageIO
Expected in: /sw/lib/libJPEG.dylib
Trace/BPT trap
Any suggestions? I have installed the
2005 Jun 25
2
r equivalent of egen? Not tapply
I have a list that has about 50 elements, each repeated many times (a
list of states by observation). I want to create a vector with the
same length with the same value repeated over and over again within
states. The value I want is the number of observations that are in
the same state as each observation.
In stata, this is simply egen statesum = count(state), by(state).
What is the r
2006 May 03
2
Outreg-like command?
It would be nice to have something like stata's outreg that lets regression
output go into a form like
Specification (1) Specification (2)
Var 1 coef(1,1) coef(1,2)
se(1,1) se(1,2)
Var 2 coef(2,1) coef(2,2)
se(2,1) se(2,2)
I don't think this can be done in xtable?
Thomas Davidoff
Assistant Professor
Haas School of Business
UC Berkeley
Berkeley, CA 94618
Phone: (510)
2006 Apr 27
0
problem with get command [Broadcast]
Sorry, couldn't resist...
From: Gabor Grothendieck
>
> ov$vn1 is not a variable. It is the result of applying the $
> function to the ov and vn1 arguments.
... which would suggest: get("$")(get("ov"), "vn1"). 8-)
Andy
> For example, using BOD which is a data frame that comes with
> R, rather than get("BOD$Time") use
2020 Nov 21
3
Error in unsplit() with tibbles
Hello,
using the `unsplit()` function with tibbles currently leads to the
following error:
> mtcars_tb <- as_tibble(mtcars, rownames = NULL)
> s <- split(mtcars_tb, mtcars_tb$gear)
> unsplit(s, mtcars_tb$gear)
Error: Must subset rows with a valid subscript vector.
? Logical subscripts must match the size of the indexed input.
x Input has size 15 but subscript `rep(NA, len)` has
2002 Jul 28
1
[R] bug in unsplit()? (PR#1843)
Hedderik van Rijn <hedderik@cmu.edu> writes:
> If the second argument to unsplit is not a simple vector (but a "list
> containing multiple lists"), the function seems to have some problems.
>
> Given a slight modification of the examples in help(split):
>
> > xg <- split(x,list(g1=g,g2=g))
> > unsplit(xg,list(g1=g,g2=g))
> [1] -0.7877109
2020 Nov 21
2
Error in unsplit() with tibbles
I get the sentiment, but this is really just bad coding (on my own part, I suspect), so we might as well just fix it...
-pd
> On 21 Nov 2020, at 17:42 , Marc Schwartz via R-devel <r-devel at r-project.org> wrote:
>
>
>> On Nov 21, 2020, at 10:55 AM, Mario Annau <mario.annau at gmail.com> wrote:
>>
>> Hello,
>>
>> using the `unsplit()`
2010 Apr 19
2
Using split and then unsplit
Hello everyone,
I use the split function splitting with the f function on a 3 columns and
more than 100 000 rows data frame. Once it's split I have a list of data
frames still with 3 columns and n rows. I manipulate those list elements and
get a list of data frames still with 3 columns but less rows. So when I
unsplit it, I get an error as I use the same factor function I used to split
( f in
2006 Jun 08
1
NAs in unsplit factor
R-devel,
Below is a simple example calling split and unsplit on a numeric
vector of length 2 where 'f' is c(1,NA).
> unsplit(split(c(1,2), c(1,NA)), c(1,NA))
[1] 1 0
I noticed that the call to vector in unsplit gives us 0 as the 2nd
element of the result.
Is this the intended result, as opposed to NA?
Thanks for your help,
Jeff
--
Jeff Enos
Kane Capital Management
jeff at
2005 Sep 27
2
Using unsplit - unsplit does not seem to reverse the effect of split
In data OME in MASS I would like to extract the first 5 observations per subject (=ID). So I do
library(MASS)
OMEsub <- split(OME, OME$ID)
OMEsub <- lapply(OMEsub,function(x)x[1:5,])
unsplit(OMEsub, OME$ID)
- which results in
[[1]]
[1] 1 1 1 1 1
[[2]]
[1] 30 30 30 30 30
[[3]]
[1] low low low low low
Levels: N/A high low
[[4]]
[1] 35 35 40 40 45
[[5]]
[1] coherent incoherent coherent
2009 May 08
1
unsplit list of data.frames with one column
Perhaps this is the intended behavior, but I discovered that unsplit
throws an error when it tries to set rownames of a variable that has
no dimension. This occurs when unsplit is passed a list of
data.frames that have only a single column.
An example:
df <- data.frame(letters[seq(25)])
fac <- rep(seq(5), 5)
unsplit(split(df, fac), fac)
For reference, I'm using R version 2.9.0
2011 May 06
1
Cumsum in Lattice Panel Function
I'm trying to create an xyplot with a "groups" argument where the y-variable
is the cumsum of the values stored in the input data frame. I almost have
it, but I can't get it to automatically adjust the y-axis scale. How do I
get the y-axis to automatically scale as it would have if the cumsum values
had been stored in the data frame?
Here is the code I have so far:
2011 May 19
1
Problems with unsplit()
Hi everyone,
I have already used split() and unsplit() in data frames without problems,
but now I’m applying these functions to other data and when using unsplit()
I have received the following message:
Error in `row.names<-.data.frame`(`*tmp*`, value = c("1", "2", "3", "4", :
duplicate ''row.names'' are not allowed
In
2011 Mar 10
1
getting percentiles by factor
Hello,
I'm trying to get percentiles (PERCENTRANK for excel users) by factor in the
following data.frame:
myExample <- data.frame(Ret=seq(-2, 2.5,
by=0.5),PE=seq(10,19),Sectors=rep(c("Financial","Industrial"),5))
myExample <- na.omit(myExample)
Thanks to Patrick I I managed to put together the following lines which does
it for the "Ret" column:
myecdf
2010 Apr 13
2
efficiently picking one row from a data frame per unique key
Hello all, I'm trying to transform data frames by grouping the rows by the
values in a particular column, ordered by another column, then picking the
first row in each group.
I'd like to convert a data frame like this:
x y z
1 10 20
1 11 19
2 12 18
4 13 17
into one with three rows, like this, where i've discarded one row:
x y z
1 1 11 19
2 2 12 18
4 4 13 17
I've got a
2002 Mar 20
3
[PATCH] rsync kills all user processes on fork failure
I filed this as bug 4150 http://rsync.samba.org/cgi-bin/rsync/
We had a few hundred hung processes and reached the limit for "max user
processes" (see the ulimit command). rsync did not handle this very
well. It passed -1 as a PID to kill(). When kill() gets -1, it kills all
of the processes owned by that user, or if run by root, all processes.
I attached a one line fix. Let me
2002 Aug 11
1
installation on 486
hello,
i was just trying to install the ogg package on my old 486 (~70 mhz iirc)
machine, but was not able to compile the libvorbis-package because
of: gcc: Internal compiler error: program cc1 got fatal signal 6
i think that this is not really a problem of vorbis, but of my old
gcc-version (2.7.2.3). however, before upgrading gcc (and who knows, what else
needs to be upgraded, too) i would like
2009 Nov 19
2
Efficient cbind of elements from two lists
Hi!
I have a data.frame "data" and splitted it.
data <- split(data, data[,1])
This is a quite slow procedure; and I do not want to do it again. So,
any unsplit and "resplit" is no option for me.
But: I have to cbind "variables" to the splitted data from another list,
that contains of vectors with matching sizes, so
for (i in 1:length(data)) {
data[[i]]
2005 Aug 03
2
Mapping HPUX to Windows Shared Directories
I need to know what the command would be to map an HPUX directory to a Windows shared directory.
I am running Samba 3.0.7 on HPUX 11i and have Windows Server 2003.
Any help would be greatly appreciated.
Regards,
Tony Gardner
UNIX Contractor
Haas Automation, Inc.