Displaying 20 results from an estimated 3000 matches similar to: "deriv value"
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 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 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 01
2
simple question
How does one turn a character string back into an object?
I would like to take character strings and use them as objects, a process
that I think is the reverse of deparse( substitute(X)).
E.g., I would like to get the variable names from the fourth object listed
with objects(),
something like
names(objects()[4]), but of course that doesn't work.
Thanks
Henry
Dr. M. Henry H. Stevens
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 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..
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 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
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
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
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
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
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 <-
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:
2003 Jan 30
2
nearest neighbour interpolation
Dear Help List,
My name is Matt Oliver. I have been using R for about a year and find it very
helpful. However, I have a need for a function that I cannot find. I am not very
good at programming so I thought I would ask the group.
I have an irregular grid of data (x = Longitude, y = Latitude). Each pair of my x,y
has a categorical value. Obviously linear or any other numerically based
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
##
2011 Jun 16
1
Merging yields "Error: unexpected input ..."
I am new to R and am having difficulty merging 2 data sets, both of which have the same 30 variables and about 2,000 records. I've looked high and low—Paul Johnson's help page, through some of the 5,420 (yikes!) results for “merge” on the R list archives, and google searches—and I'm getting nowhere, so I thought I'd ask.
When I try to merge by the ID variable:
>
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