Displaying 20 results from an estimated 8000 matches similar to: "Discriminating between experiments with xyplot (lattice)"
2001 Oct 01
3
can I add to a plot and auto-re-scale axes?
(I'm new to R)
Is there a way to add data to an existing plot, and have the plot axes
rescaled automatically (i.e. if the new data lie outside the current
axes) ?
If not, how can I specify multiple datasets at once, so the axes are
scaled to accomodate all sets?
Details:
(Am I using R's data structures in a reasonable way?)
I have many small datasets taken under different
2013 Feb 07
4
help with creating new variables using a loop
Hi there,
I've got a set of 10 numeric variables called Mood1 to Mood10 in a dataset called mood. I'm trying to create a set of 10 new variables called m1 to m10 so that m1=Mood1*1, m2=Mood2*2, etc to m10=Mood10*10
Trawling through the internet, I eventually tried the following code:
for (i in 1:10){
assign(x=paste0("mood$m",i),
2008 Jul 03
3
apply with a division
Hi,
I'd like to normalize a dataset by dividing each row by the first row.
Very simple, right?
I tried this:
> expt.fluor
X1 X2 X3
1 124 120 134
2 165 163 174
3 52 51 43
4 179 171 166
5 239 238 235
>first.row <- expt.fluor[1,]
> normed <- apply(expt.fluor, 1, function(r) {r / first.row})
>normed
[[1]]
X1 X2 X3
1 1 1 1
[[2]]
X1 X2 X3
1
2005 Sep 04
1
specification for glmmPQL
Hello All,
I have a question regarding how glmmPQL should be specified. Which of
these two is correct?
summary(fm.3 <- glmmPQL(cbind(response, 100 - response) ~ expt,
data = data.1, random = ~ 1 | subject,
family = binomial))
summary(fm.4 <- glmmPQL(response ~ expt, data = data.2,
random = ~ 1 | subject, family =
2010 Feb 17
2
extract the data that match
Hi r-users,
I would like to extract the data that match. Attached is my data:
I'm interested in matchind the value in column 'intg' with value in column 'rand_no'
> cbind(z=z,intg=dd,rand_no = rr)
z intg rand_no
[1,] 0.00 0.000 0.001
[2,] 0.01 0.000 0.002
[3,] 0.02 0.000 0.002
[4,] 0.03 0.000 0.003
[5,] 0.04 0.000 0.003
[6,]
2013 Feb 08
1
help with double looping
hi there,
I have a dataframe in the shape vA1, vA2,..., vA11, vB1, vB2,..., VB11,......., VP1, VP2,...., VP11 (so 16 times a sequence of 11 variables)
I am trying to build a double loop so that i can apply the function (i-1)*v(i) to the first 10 variables, then the same for the next 10 variables, etc... 16 times.
I have tried the following with no luck:
iscores<-list()
for (j in
2008 Jan 15
1
how to fit model to split data and get residual plots
I have a data set with the following structure (with many more obs.):
var1 expt day diameter
1 1 2 0.5
1 1 3 0.9
1 1 4 1.3
1 1 5 1.7
1 2 2 0.3
1 2 3 0.5
1 2 4 0.9
1 2 5 1.6
2 1 2 0.7
2 1 3 1.2
2 1 4 1.6
2 1 5 2.3
2 2 2 0.4
2 2 3 0.8
2 2 4 1.6
2 2 5 3.2
I can get separate regression analysis for each level of var1 and expt
with the command:
by(data3, data3$var1:data3$expt, function(x)
2009 Apr 21
3
broken example: lme() + multcomp() Tukey on repeated measures design
I am trying to do Tukey HSD comparisons on a repeated measures expt.
I found the following example on r-help and quoted approvingly elsewhere.
It is broken. Can anyone please tell me how to get it to work?
I am using R 2.4.1.
> require(MASS) ## for oats data set
> require(nlme) ## for lme()
> require(multcomp) ## for multiple comparison stuff
> Aov.mod <- aov(Y ~ N + V +
2004 Mar 03
8
need help with smooth.spline
Dear R listers,
When using smooth.spline to interpolate data, results are generally
good. However, some cases produce totally unreasonable results.
The data are values of pressure, temperature, and salinity from a
probe that is lowered into the ocean, and the objective is to
interpolate temperature and salinity to specified pressures. While
smooth.spline provides excellent values at the
2012 Jun 19
1
ANOVA help
Hi All,
I have a microarray dataset as follows:
expt1 expt2 expt3 expt4 expt 5
gene1 val val val val val
gene2 val val val val val
.
.
..
gene15000 val val val val val
The result is from the same organism in four different experiments. Also, there are 4 replicates of each
2002 Aug 06
1
Questions about lexical scope
Dear R-users,
The numerical integration example given in Gentleman and Ihaka (2000),
"Lexical Scope and Statistical Computing," JCGS, 9, 491-508,
is very interesting and helpful in understanding how lexical scope
is about.
However, I got some questions that I just can't figure out.
First all, allow me to copy the two functions given by the authors:
midpoint <- function(f, a,
2008 Jul 23
1
Calling LISP programs in R
I have written some programs in Common Lisp and I have been using SAS to pipe
those programs to my lisp compiler in batch mode by using the %xlog and
%xlst SAS commands. I wonder if there is in R a similar way to pipe commands
to LISP so that all my work would be concentrated in R even when I have to
call a LISP program? I have looked at the foreign library but this seems to
adjust data types not
2006 Jun 15
1
Repost: Estimation when interaction is present: How do I get get the parameters from nlme?
Gday,
This is a repost since I only had one direct reply and I remain
mystified- This
may be stupidity on my part but it may not be so simple.
In brief, my problem is I'm not sure how to extract parameter
values/effect sizes from a nonlinear
regression model with a significant interaction term.
My data sets are dose response curves (force and dose) for muscle that
also have two
2003 May 17
2
Discriminating between two incoming lines?
It seems like I've seen how to do this, but so far my archives search
has come up dry.
I have two X100Ps working with a single instance of asterisk, and I want
to do different things with incoming calls depending on which line has
rung in.
Could someone provide me with a quick pointer?
Thx.
B.
2010 May 27
0
Be more discriminating in rescue and wrapping with StatementInvalid
Hi all,
I just submitted a patch to 2-3-stable on lighthouse and wanted to
bring it to folks general attention.
https://rails.lighthouseapp.com/projects/8994-ruby-on-rails/tickets/896-be-a-little-more-discerning-about-which-exceptions-to-handle
My explanation is a bit long-winded, but here''s the motivation for the
patch, as explained in the lighthouse ticket:
Perhaps I should open
2005 Apr 21
1
Fwd: (KAME-snap 9012) racoon in the kame project
FYI, looks like support for Racoon is ending. Does anyone have any
experience with the version in ipsec-tools ?
---Mike
>Racoon users,
>
>This is the announcement that the kame project will quit providing
>a key management daemon, the racoon, and that "ipsec-tools" will become
>the formal team to release the racoon.
>The final release of the racoon in the
2010 Nov 16
2
Debugging segfault in foreach
Hi,
I'm using R-2.12 on a linux 64bit machine.
When I run a chunk of code inside a foreach() %do% { ...} or %dopar%
{...} (with doMC backend) I keep getting a segfault. Running the
*same* code within lapply(something, function(x) ... ) doesn't result
in any segfaults. I'll paste the output below, but I'm not sure it
would be helpful.
I'm more curious how to go about smoking
2011 Jul 15
1
combining elements in a data frame
Hi all,
I have 2 data frames the first contains a list with repeats of words and an associated response time (RT) measure for each word. The second is a tabulation of each unique word and other information such as the amount and of responses for each word. I need to determine the mean RT for each word and add that as a column in the second data frame.
Any help would be appreciated
Cheers
2013 Dec 17
1
ggplot2: stat_smooth for family=binomial with cbind(Y, N) formula
With ggplot2, I can plot the glm stat_smooth for binomial data when the
response is binary or
a two-level factor as follows:
data("Donner", package="vcdExtra")
ggplot(Donner, aes(age, survived)) +
geom_point(position = position_jitter(height = 0.02, width = 0)) +
stat_smooth(method = "glm", family = binomial, formula = y ~ x,
alpha = 0.2, size=2)
But how can I
2017 Aug 26
3
Lenovo T460p post 7.4 CR possible problems
I have updated my laptop to 7.4 CR this morning and found that there
have been a lot of logs on two fronts for the first time.
1. The kernel has indicated overheating:
[Sat Aug 26 08:58:21 2017] CPU2: Core temperature above threshold, cpu
clock throttled (total events = 1)
[Sat Aug 26 08:58:21 2017] CPU4: Package temperature above threshold,
cpu clock throttled (total events = 1)
[Sat Aug 26