Displaying 20 results from an estimated 9000 matches similar to: "multiple variables Y and X"
2006 Mar 16
2
DIfference between weights options in lm GLm and gls.
Dear R-List users,
Can anyone explain exactly the difference between Weights options in lm glm
and gls?
I try the following codes, but the results are different.
> lm1
Call:
lm(formula = y ~ x)
Coefficients:
(Intercept) x
0.1183 7.3075
> lm2
Call:
lm(formula = y ~ x, weights = W)
Coefficients:
(Intercept) x
0.04193 7.30660
> lm3
Call:
2008 Sep 17
2
Command Prompt Question
Could someone please tell me how to stop the package/function name from
being included before the command prompt? This started happening today
after I made some changes to my Rprofile.site file and I don't know why.
For example: if I enter example(AIC), instead of just getting the
regular '>' before each output line, I get 'AIC>' instead. I only want
the '>'
2010 Sep 23
2
dnorm
Dear R-users
Idea:
Plot a dnorm line using specific mean/sd to complete a histogram (skewed). xs:range of y-values, ys: dnorm function
Problem:
I expected to multiply the ys function with the sample size (n=250-300). I was wondering about a factor between 12'000 and 30'000 to match the size of the dnorm line with the specific histogram.
Thanks
Sibylle
hist(Biotree[Ld,]$Height2008,
2005 Oct 16
2
Animated lissajous
Here's some code to make lissajous dance. I've attached a small sample
GIF.
Cheers,
Rob Steele
robsteele at yahoo dot com
plot.lissajous = function(omega.x, omega.y, delta = 0, num.thetas = 200)
{
thetas = seq(0, 2 * pi, length = num.thetas)
xs = sin(omega.x * thetas + delta)
ys = cos(omega.y * thetas)
plot(xs, ys, type = 'l', lwd = 3, ann = FALSE, axes = FALSE)
}
2023 May 20
1
[libguestfs-common PATCH] Add support for OCaml 5.0
Pervasives is deprecated since Ocaml 4.08 and has been
removed in OCaml 5.0.
https://github.com/ocaml/ocaml/pull/1605
---
mlstdutils/std_utils.ml | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/mlstdutils/std_utils.ml b/mlstdutils/std_utils.ml
index 0d2fa22..86b21a7 100644
--- a/mlstdutils/std_utils.ml
+++ b/mlstdutils/std_utils.ml
@@ -341,12 +341,12 @@ module List =
2011 Nov 04
3
barplot as histogram
Hello:
I'm dealing with an issue currently that I'm not sure the best way to
approach. I've got a very large (10G+) dataset that I'm trying to create
a histogram for. I don't seem to be able to use hist directly as I can
not create an R vector of size greater than 2.2G. I considered
condensing the data previous to loading it into R and just plotting
the frequencies as a
2010 Jun 03
3
(no subject)
Dear R users,
I am trying to draw error bars in a bar plot, I use this code (tried many others which did not work):
install.packages()
library(gplots)
y <-c(39.02, 46.42)
se <- c(7.57,7.35)
plot <- barplot(y, beside=TRUE, col=0, ylim=c(0,47), axis.lty=1, main="far-red", xlab="latitude", names.arg=c("56N", "68N"))
superpose.eb(plot, y, se,
2012 Feb 06
1
ggplot2 geom_polygon fill
Hi everyone,
i've been trying to make a special plot with ggplot2, but I can't get it to
fill the polygon I'd like to see filled so very very much.
I want to display the difference or change in the distribution of the
modified Rankin Scale between two groups. mRS is a scale for disability or
daily activities competence.
It looks like this.
2011 Oct 24
1
using predict.lm() within a function
I've written a simple function to draw a regression line in a plot and
annotate the line showing the slope
with a label. It works, as I'm using it, when the horizontal variable
is 'x', but gives incorrect results otherwise.
What's wrong?
# simple function to show the slope of a line
show.beta <- function(model, x="x", x1, x2, label, col="black", ...)
2002 Jan 05
1
abline and log plots (PR#1243)
Full_Name: Stephen Eglen
Version: 1.4
OS: Redhat Linux 7.1
Submission from: (NULL) (128.252.204.36)
abline() produces a spurious line in addition to the correct line, at least with
the X11 driver. The postscript file generated also has nan values in it, which
causes an error under ghostscript.
xs <- c(0, 150, 300)
ys <- c(75, 40, 23)
par(mfrow=c(1,2))
plot(xs,ys, log="")
2011 Feb 21
2
linear regression and t-distribution
Hello
I have a data set with outlier and it is not normally distributed. I would instead like to use a more robust distribution like t-distribution.
My question is if the coefficients of the regression are different from zero, but assuming a t-distribution.
Could someone hint me what package to use or....
Thanks in advance
Rosario
2016 Jul 07
2
Re: [PATCH v3 4/8] mllib: Add some imperative list manipulation functions.
On Thursday 07 July 2016 17:30:03 Richard W.M. Jones wrote:
> This adds imperative list manipulation functions inspired by Perl.
> The functions are passed list refs which get updated in place.
>
> This allows us to replace some awkward pure functional code like:
>
> let xs = ys in
> let xs = if foo then xs @ zs else xs in
>
> with:
>
> let xs = ref ys in
2016 Jul 08
2
Re: [PATCH v3 4/8] mllib: Add some imperative list manipulation functions.
On Thu, Jul 07, 2016 at 06:08:43PM +0100, Richard W.M. Jones wrote:
> On Thu, Jul 07, 2016 at 07:00:46PM +0200, Pino Toscano wrote:
> > On Thursday 07 July 2016 17:30:03 Richard W.M. Jones wrote:
> > > This adds imperative list manipulation functions inspired by Perl.
> > > The functions are passed list refs which get updated in place.
> > >
> > > This
2010 Oct 27
2
plot by cathegories within a factor
Hello
I have a data set summarized like this:
File name= Height
Group Ind Age Trait
1 1 1 20
1 1 2 21
1 2 1 22
1 2 2 21
1 3 1 24
1 3 2 45
1 4 1 23
1 4 2 26
2 1 1 45
2 1 2 12
2 2 1 25
2 2 2 26
2 3 1 45
2 3 2 43
2 4 1 23
2 4 2 47
.
.
.
I would like to plot Trait ~ Age but a different plot for each Group.
I tried:
> plot(Height$Trait ~ Height$Age | Group)
But does not work. Any
2010 Nov 29
1
extracting P values from lm model
Hello
I am trying to get out of an lm model the fstatistics, however after I run the model I write
> names(Model)
and the fstatistic does not appear only these.
names(Model)
[1] "coefficients" "residuals" "effects" "rank" "fitted.values"
[6] "assign" "qr" "df.residual"
2007 Oct 13
2
How to identify the two largest peaks in a trimodal distribution
Hello all
I'm trying to do a simulation that involves identifying the minimum
point between two peaks of a (usually) bimodal distribution. I can do
this easily if there are only two peaks:
CnBdens<-density(Ys/Xs) #probability density function for ratio of Ys
to Xs
for(p in 1:512) ifelse(CnBdens$y[p]>CnBdens$y[p-1],peak1<-p,break)
#identifies first peak in probability
2009 Aug 19
1
ridge regression
Dear all,
I considered an ordinary ridge regression problem. I followed three
different ways:
1. estimate beta without any standardization
2. estimate standardized beta (standardizing X and y) and then again convert
back
3. estimate beta using lm.ridge() function
X<-matrix(c(1,2,9,3,2,4,7,2,3,5,9,1),4,3)
y<-t(as.matrix(cbind(2,3,4,5)))
n<-nrow(X)
p<-ncol(X)
#Without
2011 Jun 16
1
R in MAC add many extra <´s
Hello
I have a annoying problem with R (which I am running in MAC).
Every time I enter a function and I press enter to run it, I get many additional "<?s", it is really bothering me. I have tried to google to find out how to fix the problem but I did not succeed. Anyone with similar experience that could help me to change the set ups of the program or something.
Thanks in advance
2011 Jun 22
1
Factor Analysis with orthogonal and oblique rotation
Hello
I seem to find only two types of rotation for the factanal function in R, the Varimax and Promax, but is it possible to run a orthogonal and oblique rotations in R?
Thanks in advance
Rosario
2011 Aug 04
3
persp()
Hello
I am trying to draw a basic black and white map of two European countries.
After searching some key words in google and reading many pages I arrived to the conclusion that persp() could be used to draw that map.
I have prepared three small example files, which are supposed to be the files required for running that function.
xvector is a vector with the longitudes
yvector is a vector with