Displaying 20 results from an estimated 7000 matches similar to: "simple question"
2001 May 03
1
dataframe behavior
Windows98, Emacs20.7, ESS5.1.18
I recently constructing a data.frame "belle" that now does not spew its
contents when I type the name on the command line (see errors below). It
will only do so if I specify columns. Incidently, plot(belle) displays the
pairs plot of all variables.
> belle
Error in as.data.frame.default(x[[i]], optional = TRUE) :
can't coerce array into a
2001 May 16
2
nlme and "Mixed- Effects Models..." in Windows
(windows 98, R 1.2.3, ESS 5.1.18, nlme 3.1 from CRAN)
Dear R users,
I am trying to follow Pinheiro and Bates book ("Mixed-Effects Models in S
and S-PLUS"). I downloaded the nlme package from CRAN, and unzipped all the
data and help files. Unfortunately, I cannot generate the figures in the
book. For instance, their appears to be no plot.design or intervals plotting
functions.
Have these
2001 May 11
1
lsoda
I am running R 1.2.3 with ESS5.1.18 with Windows 98.
I am trying to use lsoda in the odesolve apckage and am having problems.
Question:
The return value of the function of the system of ode's has to be a list
that includes first, the ode's and second, "a vector
(possibly with a `names' attribute) of global values that are
required at each point in `times'."
I
2001 May 29
2
format for tick labels
Running R 1.2.3, Windows 98
I checked the archives, and I couldn't find anything pertaining to this:
How do I control format (scientific notation versus decimal, e.g.) on tick
labels?
TIA,
Henry
Dr. M. Henry H. Stevens
Postdoctoral Associate
Department of Ecology, Evolution, & Natural Resources
14 College Farm Road
Cook College, Rutgers University
New Brunswick, NJ 08901-8551
email:
2001 May 22
0
deriv value
How do I get eval( deriv(~F,"x") ) to return ONLY the values of the
derivative of F?
the default returns values of F(x), AND F'(x) as a ".gradient" attribute,
and , after reading everything I have on eval(), deriv(), and attr(), I had
absolutely no idea how to get just F'(x) evaluated a x.
Many thanks,
Henry
Dr. M. Henry H. Stevens
Postdoctoral Associate
Department of
2001 Apr 20
5
Interacting with R
Dear R folks,
(Running Windows 98, Pentium II, 128 Mb RAM)
I have been using Splus 2000 for about 1.5 years, and have recently begun using R. I love the Open Source philosophy! I may be switching to to Linux soon.
My question:
How do people most often interact with R?
In Splus 2000, I used "Script" windows to write functions. "Script" windows were great because:
1..
2010 Jan 15
3
unlinking
Quick question. How important are these? Are the errors recoverable and
not a big deal, or are they actually a problem? I see a few of these
randomly over the course of the day.
Jan 15 10:04:04 gehenna13.rutgers.edu dovecot: IMAP(user):
unlink(/rci/nqu/rci/u8/user/dovecot/.such and such
maildir/.nfs00000000001e951000002b8d) failed: Device or resource busy
Jan 15 10:04:04 gehenna13.rutgers.edu
2011 Oct 03
1
Compact letter display for interaction effects
Hello,
I am interested in generating a compact letter display for the results
of Tukey HSD tests that contain interaction effects. The 'cld' method in
the 'multcomp' package seems only to work for main effects. Does such a
thing exist already? Thank you for any thoughts,
Josh
--
Joshua Caplan, PhD
Postdoctoral Associate
Department of Ecology, Evolution, and Natural Resources
2010 Jan 28
0
assertion mail-transaction-log-view.c
I'm not sure how useful this is with optimization turned back on, but
here it is anyway. This was just a one off that happened last night:
Jan 27 20:49:05 gehenna17.rutgers.edu dovecot: IMAP(user): fscking index
file /rci/nqu/rci/u2/user/dovecot/.INBOX/dovecot.index
Jan 27 20:49:05 gehenna17.rutgers.edu dovecot: IMAP(user): Panic: file
mail-transaction-log-view.c: line 108
2007 Apr 24
1
Importing a CSV file
Hi,
I'm trying to load .csv file into R (3790 by 30). I'm having an odd
difficulty. After I type:
read.csv("niwage.csv", header = TRUE)
the data appears on the screen. The last thirty or so observations appear
on the screen and they have been read in correctly.
However, when I type:
dim(data)
I see:
NULL
This seems odd to me--R seems to be recognizing the data but not
2003 Jun 23
3
saving plots
Hi all, I am have an R script that makes many plots, and I would like to
string them into a movie file. To do that I have to save all of my plots as
jpegs or gifs. I don't want to go through all of my plots and save them by
hand though. Is there a way to automate saving the plots as a gif or a jpeg
so I can string them into a movie?
Thanks in advance
Matt Oliver
2009 Jun 26
3
changing default arguments of a function and return the modified function as a result
Dear R-users,
I am trying to develop a function that takes another function as an argument,
changes its default values and returns a list of things, among which the
initial function with its default arguments changed. An example of what i
will like to obtain below:
## initial function
myfun <- function(x, a=19, b=21){ return(a * x + b) }
## this is the function i will like to create
##
2010 Jan 29
1
apply function with grouped columns
I have a data set of many rows and many columns in which both the rows and
the columns have associated grouping factors.
Is there a way to do what 'aggregate' does but in the other dimension?
The way I have been doing this is to use 'aggregate' on the data in the
usual way and then rotate the result and apply 'aggregate' again. This
works but is a little messy and I was
2016 Aug 29
2
Publication
Hi,
Can you add the following two publications from our group to the LLVM
publications page.
-
*Alive-FP: Automated Verification of Floating Point Based Peephole
Optimizations in LLVM [pdf]
<http://www.cs.rutgers.edu/~santosh.nagarakatte/papers/alive-fp-sas16.pdf>
*David
Menendez, Santosh Nagarakatte, and Aarti Gupta
*To Appear in the Proceedings of the 23rd Static Analysis
2004 Aug 27
1
ANCOVA
Dear R-help list,
I am attempting to understand the proper formulation of ANCOVA's in R. I
would like to test both parallelism and intercept equality for some data
sets, so I have generated an artificial data set to ease my understanding.
This is what I have done
#Limits of random error added to vectors
min <- -0.1
max <- 0.1
x <- c(c(1:10), c(1:10))+runif(20, min, max)
x1 <-
2004 Nov 09
3
no doubt a dumb question, but..
Yes, I am a newbie at R, but it is not the complex commands in R that
have me baffled, but simple data commands. For example, why does
something like:
> plot(Girth ~ Height)
*not* work after a command that allegedly loads the data:
> data(trees)
with the error message:
Error in eval(expr, envir, enclos) : Object "Girth" not found
but does work after the command:
>
2008 May 07
1
[BioC] RCurl loading problem with 64 bit linux distribution
Martin,
Well, thanks for jumping in! We need all the help we can get ;)
I changed the execute bit as you suggested and recompiled, no luck, still
the same error message.
Below is the output you wanted me to look at, its a bit beyond me so I
include both a brief grep summary and then the whole enchilada. I do note
that my output is different from yours, but I'm not sure how to interpret.
I
2008 May 07
1
[BioC] RCurl loading problem with 64 bit linux distribution
Martin,
Well, thanks for jumping in! We need all the help we can get ;)
I changed the execute bit as you suggested and recompiled, no luck, still
the same error message.
Below is the output you wanted me to look at, its a bit beyond me so I
include both a brief grep summary and then the whole enchilada. I do note
that my output is different from yours, but I'm not sure how to interpret.
I
2001 Jul 27
3
converting among modes
Windows 2000, R 1.3.0
I have been given a data set (ASCII tab delimited) in which many variables
that are supposed to be numeric actually contain characters. I would be
happy to have those character entries disappear and become NA.
When I use read.table and then attempt to convert these using as.numeric(),
of course it doesn't work, and I get the ASCII? representation? maybe? When
I use
2013 Jun 25
1
[LLVMdev] Publication
LLVM developers,
Can you add the following paper to the publication list?
"Formal Verification of SSA Optimizations for LLVM"
Jianzhou Zhao, Santosh Nagarakatte, Milo M K Martin and Steve Zdancewic
Proceedings of the 34th ACM SIGPLAN Conference on Programming Language
Design and Implementation (PLDI) 2013
link to ACM DL: