Displaying 20 results from an estimated 6000 matches similar to: "Incremental ReadLines"
2011 Dec 06
2
read.table performance
** Disclaimer: I'm looking for general suggestions **
I'm sorry, but can't send out the file I'm using, so there is no
reproducible example.
I'm using read.table and it's taking over 30 seconds to read a tiny file.
The strange thing is that it takes roughly the same amount of time if the
file is 100 times larger.
After re-reviewing the data Import / Export manual I think
2013 Mar 10
0
max row
HI,
Using
c11<- 0.01
c12<- 0.01
c1<- 0.10
c2<- 0.10
One possible problem is that:
dim(res5)
#[1] 513? 20
res6<-aggregate(.~m1+n1+m+n,data=res5[,c(1:6,9:12,21:24)] ,max)
#Error in `[.data.frame`(res5, , c(1:6, 9:12, 21:24)) :
?# undefined columns selected
A.K.
________________________________
From: Joanna Zhang <zjoanna2013 at gmail.com>
To: arun <smartpink111 at
2011 Dec 07
1
RSPython installation
Does anyone know if Is there a way to manually install RSPython?
I get this error when I try to run the script from my DOS prompt.
V:\>R CMD INSTALL -c C:/Users/gene.leynes/Downloads/RSPython_0.7-1.tar.gz
* installing to library 'C:/Users/gene.leynes/Documents/R/win-library/2.13'
* installing *source* package 'RSPython' ...
**********************************************
2015 Jun 21
2
Trying to re-install ZFS drivers
What should have been a routine upgrade to ZFS 0.6.4.1-1.el6.x86_64
somehow failed, and now I've lost access to a 2T raidz2 array. I've
tried removing all zfs and related packages (spl*), then starting fresh.
For reasons that have have nothing to do with this problem (I don't
think), I'm still booted to kernel 2.6.32-431.29.2.el6.x86_64, and there
are no other kernels installed.
2011 Apr 18
1
having trouble with "R CMD INSTALL"
Hello,
I was having trouble passing in command line options when doing an package
install earlier.
>From An Introduction in R
> In addition, you can use25<http://cran.r-project.org/doc/manuals/R-intro.html#fn-25>options
> --arch=, --no-environ, --no-init-file, --no-site-file and --vanillabetween
> R and CMD: these affect any R processes run by the tools. (Here --vanillais
2004 Feb 19
1
piece wise application of functions
Dear all,
After struggling for some time with *apply() and eva() without
success, I decided to ask for help.
I have 3 lists labeled with, each contains 3 different
interpolation functions with identical names:
> names(missgp0)
[1] "spl.1mb" "spl.2mb" "spl.5mb"
>
> names(missgp1)
[1] "spl.1mb" "spl.2mb" "spl.5mb"
>
>
2007 Aug 30
1
Barplot2 using for loop, how to adjust margins?
Hi R-users,
I inted to make multiple plots using for loop. The question is how can
I adjust the left hand side margin of the plot according to the
names.arg argument in barplot2. In every plot I have different
annotations in the y axis and they vary in length. Now when I have
fixed margins
opar <- par(mar=c(3,15,0,2)...
I get the same margins in all of the plots. That leaves lots of white
2010 Jan 18
3
Using the output of strsplit
I successfully combined my data frames, and am now on my next hurdle.
I had combined the data and quarter, and used tapply to count the
entries for each unique date/quarter pair.
ar= tapply(ewrgnd$gw, list(ewrgnd$dq), sum) #for each date/quarter
combination sums the gw (which are all 1)
dq=row.names(ar)
spl=strsplit(dq)
But I need to split them back into the separate date and quarter. So I
used
2005 Jul 20
2
.spl files
I am not certain that this is the right place to post this, but maybe
some kind soul can point me in the right direction if not. And I
apologize if this is the wrong spot...The reason I posted here is that
I recall running across a syslinux changlog that said "..added support
for reading .spl..." files. I want to customize the suse boot up
splash screens (for a CD install). I have been
2002 Nov 25
2
Pspline smoothing
Dear all,
I'm trying to use the Pspline add-on package to fit a quintic spline
(norder =3), but I keep running into a Singularity error.
> traj.spl <- smooth.Pspline(time, x, norder=3 )
Error in smooth.Pspline(time, x, norder = 3) :
Singularity error in solving equations
>
Playing around with the other parameters produces an "unused arguments" error:
> traj.spl
2013 Feb 01
29
cumulative sum by group and under some criteria
Thank you very much for your reply. Your code work well with this example.
I modified a little to fit my real data, I got an error massage.
Error in split.default(x = seq_len(nrow(x)), f = f, drop = drop, ...) :
Group length is 0 but data length > 0
On Thu, Jan 31, 2013 at 12:21 PM, arun kirshna [via R] <
ml-node+s789695n4657196h87@n4.nabble.com> wrote:
> Hi,
> Try this:
>
2009 May 24
2
how to implement a circular buffer with R
Some wavelet analysis experts have implemented periodic boundary conditions for signals.
I need to implement a circular buffer. Something like:
"12345abcdefgh12345abcdefgh"
so that at each step the riightmost element is moved to the leftmost index and everything else is properly shifted:
"h12345abcdefgh12345abcdefg", "gh12345abcdefgh12345abcdef", ....
My
2010 Apr 02
4
Derivative of a smooth function
Dear All,
I've been?searching for?appropriate codes to compute the rate of change and the curvature?of ?nonparametric regression model whish was denoted by a smooth function?but?unfortunately?don't manage to?do?it. I presume that such characteristics from a smooth curve can be determined by the first and second derivative operators.
The following are the example of fitting a
2011 Jan 14
3
RSQLite - How to express(or save) a dataframe as an output?
Dear R helpers
Suppose following is an output due to some R process. I wish to save it as a table in 'temp.db'
df <- data.frame(x = c(5, 4, 3, 11), y = c(25, 16, 9, 121))
library(RSQLite)
write('** Initializing','')
drv <- dbDriver("SQLite", shared.cache = TRUE)
con <- dbConnect(drv, dbname = "temp.db",
2012 Aug 03
2
Recursive function calls
My apologies, I know that this is not a new problem, but I'm not sure how
to find the answer
I want to recursively loop over an object and trim trailing white space.
When I use this function on a list of data.frame I get output like this:
[1] "c(\" many spaces \", \" many spaces \")" "c(\" many spaces
\", \" many spaces
2009 Jul 05
2
integrar resultado de splines cubicos
hola soy nuevo usuario de R y necesito crear un objeto p tal que,
p=lambda*integral[f´´(x)^2 dx ]
donde "lambda" es uno de los parametros que resultan de la funcion
"smooth.spline()" y la integral es sobre la derivada 2 de esa misma
funcion...
dos cuestiones:
1) como extraigo lambda de los resultados de smooth.spline() para usarlo
como objeto cuando lo requiera y
2) como
2012 Jul 31
1
Ubuntu installation
I just followed the instructions on
CRAN<http://cran.r-project.org/bin/linux/ubuntu/README> to install
R on an Ubuntu instance.
sudo apt-get install r-base
Why does it install an old version of R? Can I install version 15.1?
I changed my sources.list to be a current cran mirror. I believe that I
have entered the URL correctly because at first I had it wrong (there was a
trailing
2011 Aug 29
3
replacing elements of a zoo object
Why doesn't this work?
x = zoo(1:5, as.Date('2001-01-01')+1:5)
x[as.Date('2001-01-05')]
x[as.Date('2001-01-05')] = 0
x
I think this is especially bad because it doesn't cause an error. It lets
you do something to x, but then you can't see x again to see what it did.
[[alternative HTML version deleted]]
2009 Sep 08
1
Character manipulation using "strsplit" & vectorization
Dear R users,
Suppose I have a data set with inconsistent names for a field.
I desire to make these to consistent names.
i.e
"University of New Jersey", "New Jersey Uni", "New Jersey University" (3
different inconsistent names) to "The University of New Jersey" (consistent
name)
Below are arbitrary data set produced from "state.name" (built
2011 Feb 23
4
The L Word
I've been wondering what L means in the R computing context, and was
wondering if someone could point me to a reference where I could read about
it, or tell me what it's called so that I can search for it myself. (L by
itself is a little too general for a search term).
I encounter it in strange places, most recently in the "save" documentation.
save(..., list = character(0L),