Displaying 20 results from an estimated 8000 matches similar to: "read.csv issue"
2004 Aug 06
1
Comparing rows in a dataframe
Hello
I have a longitudinal dataframe organized in the long format and would like to make comparison between successive rows if certain conditions apply. Specifically, I have four variables of interest: grade, score, year, and schid, associated with each school with 3 measurements per school per grade, therefore the rows are temporally ordered and each school occupies multiple rows. For example,
2004 Nov 17
1
"Impossible to run" error message when using Sweave
Dear List:
I have a large dataset of multiple schools. My goal is to produce a
separate tex file for each school that plots some of the student
achievement scores. Essentially, the aim is to develop a custom report
for each school. To accomplish this, I have code for a loop that gets
sourced into R and then Sweaves the multiple files to create the
individual school reports.
Here is the code for
2004 Aug 03
2
attach data from tapply to dataframe
I am working with a longitudinal data set in the long format. This data
set has three observations per grade level per year. Here are the first
10 rows of the data frame:
>tenn.dat[1:10,]
year schid type grade gain se new cohort
6 2001 100005 5 4 33.1 3.5 4 3
7 2002 100005 5 4 33.9 3.9 4 2
8 2003 100005 5 4 32.3 4.2 4 1
10 2001 100005
2004 Aug 06
1
reshape (was: Comparing rows in a dataframe)
Hi all:
I solved the previous stated problem in something of a brute force way
(but it works). I seem to now be running into one little hiccup using
reshape. Here is a quick snip of the data in long format:
grade stability year schid
6 Grade 4 3 2001 100005
7 Grade 4 3 2002 100005
8 Grade 4 2 2003 100005
10 Grade 5 2 2001 100005
11 Grade 5
2008 Aug 26
2
svymeans question
I have the following code which produces the output below it
clus1 <- svydesign(ids = ~schid, data = lower_dat)
items <- as.formula(paste(" ~ ", paste(lset, collapse= "+")))
rr1 <- svymean(items, clus1, deff='replace', na.rm=TRUE)
> rr1
mean SE DEff
W525209 0.719748 0.015606 2.4932
W525223 0.508228 0.027570 6.2802
W525035 0.827202
2005 Dec 01
1
Simulate Correlated data from complex sample
Dear List:
I have created some code to simulate data from a complex sample where
5000 students are nested in 50 schools. My code returns a dataframe with
a variable representing student achievement at a single time point. My
actual code for creating this is below.
What I would like to do is generate a second column of data that is
correlated with the first at .8 and has the same means within
2020 Feb 26
1
Re: *** buffer overflow detected *** accessing invalid FD in libguestfs
On Wednesday, 26 February 2020 10:43:27 CET Richard W.M. Jones wrote:
> On Wed, Feb 26, 2020 at 11:21:18AM +0200, Veselin Kozhuharski wrote:
> > Hallo Rich,
> >
> > Here is the fd list and total number just before collectd application
> > crashes. Before that the number of used fd's is constantly increasing. It
> > looks like a fd leak inside libguestfs to me.
2006 Jan 24
4
nested ANCOVA: still confused
Dear R-users,
I did some more research and I'm still not sure how to set up an ANCOVA
with nestedness. Specifically I'm not sure how to express chicks nested
within boxes. I will be getting Pinheiro & Bates (Mixed Effects Models
in S and S-Plus) but it will not arrive for another two weeks from our
interlibrary loan.
The goal is to determine if there are urbanization (purban)
2020 Feb 24
3
*** buffer overflow detected *** accessing invalid FD in libguestfs
We have extended collectd virt plugin to extract info about disk usage from
a libvirt domain using libguestfs. In addition to my previous mail I am
attaching some more infomration about the problem.
Currently the collectd plugin works fine and retrieves the required
statistics. The problem that I face happens after certain number of cycles
(getting disk usage statistics). Collectd is terminated
2012 Oct 29
4
replace repeated id in a pedigree list
Hello,
I have a pedigree file such this:
FAMID ID FA ID MO ID SEX STATUS
1 1 0 0 2 0
1 2 3 1 2 2
1 4 3 1 1 2
1 5 3 1 1 0
1 6 3 1 1 0
1 7 3 1 2 2
1 8 3 1 1 0
1 9 3 1 1 0
1 10 3 1 2 0
1 11 3 1 1 0
1 3 0 0 1 0
2 12 13
2003 Jun 12
3
unionfs related patch
G'day ...
David Schultz, in his spare time, has been working through some of the
issues I've been able to 'tweak' in the unionfs code ... as he is
currently working on forward-patching it to -CURRENT right now, he can't
commit the code to the -STABLE tree ... in order to allow others using
unionfs to test the patch (I've been running it a few weeks now on a very
heavily
2005 Jul 27
2
R 2.1.1: read.table processes C-style escapes (PR#8037)
In R 2.1.1, the default behaviour of scan() was changed to process all
C-style escapes, even when a delimiter was specified using the 'sep'
argument. A new argument 'allowEscapes' was introduced to turn this
processing off.
Because read.table() calls scan(), read.table() inherits the new default
behaviour of scan() but without a way to turn it off. For example, reading
a file
2013 Feb 26
4
[PATCH v3 0/5] kvm: Make ioeventfd usable on s390.
On Mon, Feb 25, 2013 at 04:27:45PM +0100, Cornelia Huck wrote:
> Here's the latest version of my patch series enabling ioeventfds
> on s390, again against kvm-next.
>
> Patches 1 and 2 (cleaning up initialization and exporting the virtio-ccw
> api) would make sense even independent of the ioeventfd enhancements.
>
> Patches 3-5 are concerned with adding a new type of
2013 Feb 26
4
[PATCH v3 0/5] kvm: Make ioeventfd usable on s390.
On Mon, Feb 25, 2013 at 04:27:45PM +0100, Cornelia Huck wrote:
> Here's the latest version of my patch series enabling ioeventfds
> on s390, again against kvm-next.
>
> Patches 1 and 2 (cleaning up initialization and exporting the virtio-ccw
> api) would make sense even independent of the ioeventfd enhancements.
>
> Patches 3-5 are concerned with adding a new type of
2010 Apr 08
1
Using read.table to read file created with read.table and qmethod = "escape"
df <- data.frame(a = "a\"b")
write.table(df, "test.csv", sep = ",", row = F)
Is there any to load test.csv into R correctly? I've tried the following:
> read.table("test.csv", sep = ",")
[1] V1
<0 rows> (or 0-length row.names)
Warning message:
In read.table("test.csv", sep = ",") :
incomplete final line
2009 Jun 17
1
problem with scan recognizing newline '\n'
I'm using R to do some file processing in Linux and am trying to read
in the output of find . -type f -print >
~/Music_Archives_search_problem/ls.output.find.txt
This command yields a text file with each line representing the full
path name of all files in the directory and subdirs. Unfortunately,
there seem to be some special characters that interfere with scan
recognizing '\n' as
2011 Dec 08
2
read.table question
Hello All,
This works,
results <- read.table("plink.txt",T)
while this doesn't.
results <- read.table("plink.txt")
Make sure your data frame contains columns CHR, BP, and P
What does adding the "T" in read.table do? Which argument does this
correspond to? I tried searching for it but didn't find the answer in:
read.table(file, header = FALSE,
2013 Jun 07
1
[PATCH RFC] qemu: Adapter interrupts for virtio-ccw.
Hi,
here's the qemu patch that implements the new adapter indicators ccw
in virtio-ccw and injects adapter interrupts for the devices enabled
for it.
Cornelia Huck (1):
s390/virtio-ccw: Adapter interrupt support.
hw/s390x/css.c | 10 ++++++++
hw/s390x/css.h | 2 ++
hw/s390x/virtio-ccw.c | 66 ++++++++++++++++++++++++++++++++++++++++++++++++-
hw/s390x/virtio-ccw.h |
2013 Jun 07
1
[PATCH RFC] qemu: Adapter interrupts for virtio-ccw.
Hi,
here's the qemu patch that implements the new adapter indicators ccw
in virtio-ccw and injects adapter interrupts for the devices enabled
for it.
Cornelia Huck (1):
s390/virtio-ccw: Adapter interrupt support.
hw/s390x/css.c | 10 ++++++++
hw/s390x/css.h | 2 ++
hw/s390x/virtio-ccw.c | 66 ++++++++++++++++++++++++++++++++++++++++++++++++-
hw/s390x/virtio-ccw.h |
2005 Nov 29
1
rlogis() in simulation
Dear List:
We are generating data such that students are clustered in schools for
some item response data for a simulation study. One component of our
simulation is to generate measurement error from a logistic distribution
with a mean of 0 and standard deviation of 1.7 to match the logistic
curve of the Rasch model.
We are generating an error term for each of the 40 hypothetical test
items a