Displaying 20 results from an estimated 58 matches for "hstevens".
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2001 May 11
1
lsoda
....dt,dN2.dt),c(???))
}
outlv <- lsoda(c(.1,.1),t, lvcomp2, p,rtol=1e-4, atol=1e-6)
outlv
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: hstevens at rci.rutgers.edu
phone: 732-932-9631
fax: 732-932-8746
-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-
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2001 May 03
1
dataframe behavior
...rt
1 2 25 9
2 2 26 16
3 2 27 6
..........
Any idea what is going on?
thanks
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: hstevens at rci.rutgers.edu
phone: 732-932-9631
fax: 732-932-8746
-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-
r-help mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html
Send "info", "help", or "[un]subscribe"
(in the "b...
2001 Aug 01
1
italics and not in main=
..., windows
I've checked archives, and examples in text, mtext, and title.
I am trying to include italicized text in the main title of a figure:
....,
main = "[italics here] species name [italics stop] more plain text"
TIA,
Henry
*****************************
Martin Henry H. Stevens
HStevens at muohio.edu
tel: (513) 529 - 4206
FAX: (513) 529 - 4243
338 Pearson Hall
Botany Department
Miami University
Oxford, OH 45056
-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-
r-help mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html
Send "inf...
2001 Aug 14
1
safe data.restore
...xported from S+ v. 6, beta2 using
data.dump, but I want to make sure that it does not overwrite current
objects I am using in R. How would I route the output of data.restore() to
ensure the safety of my current objects?
Thanks very much,
Henry
*****************************
Martin Henry H. Stevens
HStevens at muohio.edu
tel: (513) 529 - 4206
FAX: (513) 529 - 4243
338 Pearson Hall
Botany Department
Miami University
Oxford, OH 45056
-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-
r-help mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html
Send "inf...
2001 May 16
2
nlme and "Mixed- Effects Models..." in Windows
...or intervals plotting
functions.
Have these and other things not yet been impoemented in R?
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: hstevens at rci.rutgers.edu
phone: 732-932-9631
fax: 732-932-8746
-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-
r-help mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html
Send "info", "help", or "[un]subscribe"
(in the "b...
2001 Aug 10
1
An applied math question with solve()
...#select random coefficients that should result in positive X*'s
a <- matrix(-runif(9), nrow=3,ncol=3); diag(a) <- 1
a
solve(a,rep(0,3))
# This returns the trivial answer. How do I get the meaningful one???
Thanks for any help,
Henry
*****************************
Martin Henry H. Stevens
HStevens at muohio.edu
tel: (513) 529 - 4206
FAX: (513) 529 - 4243
338 Pearson Hall
Botany Department
Miami University
Oxford, OH 45056
-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-
r-help mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html
Send "inf...
2005 Oct 26
2
changing memory limits to speed up lsoda
Hi All,
I am running R 2.2.0 on Mac OS 10.4.2, dual G5 processors with 8 Gig
RAM.
I am running a simulation with lsoda that requires ~378 s to complete
one set of time intervals. I need to optimize the parameters, and so
need to considerably speed up the simulation.
I have tried to figure out how to change the appropriate memory
allocation and have search R help and Introductory
2001 Jul 27
3
converting among modes
...oesn't work, and I get the ASCII? representation? maybe? When
I use scan() and specify the data type (what=...), I get an error message
saying that I have character data in the numeric variable.
Any ideas are appreciated.
Thank you,
Henry
*****************************
Martin Henry H. Stevens
HStevens at muohio.edu
tel: (513) 529 - 4206
FAX: (513) 529 - 4243
338 Pearson Hall
Botany Department
Miami University
Oxford, OH 45056
-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-
r-help mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html
Send "inf...
2001 Jul 26
2
Fancy pairs(), scatterplot matrix?
...ed a function to plot a scatterplot matrix with the
upper triangle containing plots (and maybe fitted curves?) and the lower
triangle containing the correlation coefs. I have lost that code and would
love it again if anyone has it. Thanks,
Henry
*****************************
Martin Henry H. Stevens
HStevens at muohio.edu
tel: (513) 529 - 4206
FAX: (513) 529 - 4243
338 Pearson Hall
Botany Department
Miami University
Oxford, OH 45056
-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-
r-help mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html
Send "inf...
2003 Apr 29
1
plot with nlme
Using R v. 1.7.0 on Windows 2000
I would like to plot the fitted values of a model as a function of a
continuous covariate, augmented with data (e.g., augPred) grouping by
combinations of fixed effects. I have not been able to use augPred
effectively, and am wondering if it does not handle unbalanced data (3 out
of 192 missing).
I include below the model and an xyplot that almost does the
2002 Jun 19
2
split plot design with missing plots
Windows 2000 . 5.00.2195 with Service Pack 1.
R 1.5.1
Output from my split-split plot aov "alerted" me that I have done something
wrong. I designed an experiment with all combinations of all levels of each
treatment, but lost a little data (3 out of 192 plots). With the following
data, I run the following model:
> collim[c(1:6,187:192),c(1,3:6,9)]
plot Litter Fert
2006 Jun 14
3
appending
All,
In the function below I have 24 individuals and 6 calculations per
individual.
The 6 calculations are collected each time in a 1:24 loop when
calculating "delta".
I'd like to collect all 144 = 24*6 calculations in one vector
("delta.patient.comb").
The function works as is via indexing, but is there an easier way to
collect the measurements via appendinng the 6
2002 Jun 21
1
lme: anova vs. intervals
Windows 2000 (v.5.00.2195), R 1.5.1
I have an lme object, fm0, which I examine with anova() and intervals().
The anova output indicates one of the interaction terms is significant, but
the intervals output shows that the single parameter for that term includes
0.0 in its 95% CI. I believe that the anova is a conditional (sequential)
test; is intervals marginal or approximate? Which should I
2002 Jul 02
4
XEmacs vs. GNU Emacs?
As a user of only R, I don't use much of the potential of ESS and Emacs.
Without entering a religious feud, is there any reason I should use XEmacs
rather than my current GNU Emacs?
(I looked on the XEmacs site, but I didn't understand the programming
issues they were talking about (over my head).)
Martin Henry H. Stevens, Assistant Professor
338 Pearson Hall
Botany Department
Miami
2005 Jul 27
4
odesolve/lsoda differences on Windows and Mac
Hi -
I am getting different results when I run the numerical integrator
function lsoda (odesolve package) on a Mac and a PC. I am trying to
simulating a system of 10 ODE's with two exogenous pulsed inputs to the
system, and have had reasonably good success with many model parameter
sets. Under some parameter sets, however, the simulations fail on the
Mac (see error message below). The
2001 May 22
0
deriv value
...iv(), 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 Ecology, Evolution, & Natural Resources
14 College Farm Road
Cook College, Rutgers University
New Brunswick, NJ 08901-8551
email: hstevens at rci.rutgers.edu
phone: 732-932-9631
fax: 732-932-8746
-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-
r-help mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html
Send "info", "help", or "[un]subscribe"
(in the "b...
2001 Jul 16
1
data sets
...hat example data sets could be accessed by simply typing in the name of the data set associated with any loaded library (e.g. 'cars', or if MASS is loaded, 'hills'). Why might this data not show up?
Thanks for ideas in advance.
*****************************
Martin Henry H. Stevens
HStevens at muohio.edu
tel: (513) 529 - 4206
FAX: (513) 529 - 4243
338 Pearson Hall
Botany Department
Miami University
Oxford, OH 45056
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2003 Nov 17
2
Symbolic math?
Hi Folks,
I am using Windows 2000 and was wondering what (Open Source) software R
users use or might recommend for symbolic computations (aside from the ol'
noggin, e.g., Maxima, Mathomatic) .
Thanks,
Hank
Dr. Martin Henry H. Stevens, Assistant Professor
338 Pearson Hall
Botany Department
Miami University
Oxford, OH 45056
Office: (513) 529-4206
Lab: (513) 529-4262
FAX: (513) 529-4243
2006 May 05
1
MRPP in R
Hello,
I'm looking for a R function proceeding MRPP (Multi-Response Permutation
Procedures). Is it available?
Thanking you in anticipation,
Jeanne Vallet, PhD student
[[alternative HTML version deleted]]
2007 Jan 03
1
mcmcsamp and variance ratios
Hi folks,
I have assumed that ratios of variance components (Fst and Qst in
population genetics) could be estimated using the output of mcmcsamp
(the series on mcmc sample estimates of variance components).
What I have started to do is to use the matrix output that included
the log(variances), exponentiate, calculate the relevant ratio, and
apply either quantile or or HPDinterval to get