Displaying 20 results from an estimated 4000 matches similar to: "Fit model to data and use model for data generation"
2006 Oct 31
4
getMethod(s) and var.test
Hi,
How do I retrieve the var.test() function code? I had a similar problem once
before with another function but getMethods() solved the problem then. Now I
tried several combinations for var.test() without success.
Regards
benjamin
--
Benjamin Otto
Universitaetsklinikum Eppendorf Hamburg
Institut fuer Klinische Chemie
Martinistrasse 52
20246 Hamburg
[[alternative HTML
2006 Sep 29
6
List-manipulation
Hi,
Sorry for the question, I know it should be basic knowledge but I'm
struggling for two hours now.
How do I select only the first entry of each list member and ignore the
rest?
So for
> $"121_at"
> -113691170
> $"1255_g_at"
> 42231151
> $"1316_at"
> 35472685 35472588
> $"1320_at"
> -88003869
2006 Nov 07
1
S-poetry as book
Hi,
Is there a printed version of S-poetry which can purchased or would I have
to print out and bind it myself?
Regards,
Benjamin
--
Benjamin Otto
Universitaetsklinikum Eppendorf Hamburg
Institut fuer Klinische Chemie
Martinistrasse 52
20246 Hamburg
[[alternative HTML version deleted]]
2006 Dec 20
3
Rotating a distribution plot by 90 degrees
Hi,
Can I rotate a plot (e.g. a distribution plot) by 90 degrees? The barplot
function provides the "horiz" command but that's not availeable for the base
package functions. I found an old advice from Paul Murrell on a similar
problem suggesting to use viewports (grid package). Yet I couldn't reproduce
his examples successfully. And going through the examples in the current
grid
2007 Feb 08
1
Diffrerence in "%in%" function to boundry setting via <>
Hi,
There is a point which is irritating me currently quite a bit and that is an
aspect of different behaviour between the %in% function and the
smaller/bigger than signs (<>). Here is are two examples to demonstrate what
I mean:
Example1:
> c(1,1,2,2,3,4,4,6,7) %in% c(1,2,3)
[1] TRUE TRUE TRUE TRUE TRUE FALSE FALSE FALSE FALSE
Right, that is what I expect.
Example2:
> ps
2018 Apr 18
1
Problem with regression line
Hi Anne,
I would suggest to change the linear model to lm(BloodPressure~Age), as
this model makes more sense in biological means (you would assume that
age influences pressure, not vice versa) and also obeys the statistical
assumption of weak exogeneity, that age can be measured without error,
at least compared to error-prone bp measures.
Cheers
Am 18.04.2018 um 16:07 schrieb Gerrit Eichner:
2008 Aug 15
6
Saving environment object
Hi,
When I create an environment object with new.env() and populate it with
values then how can I save it into an .RData file properly, so it can be
loaded later on in a new session?
Saving an environment object with save() or save.image() results in an error
message when loading again:
Error: protect(): protection stack overflow
Regards,
benjamin
======================================
2017 Dec 04
0
YNT: ggtern and bquote...
reading ?plotmath you might notice that "_" isn't the propper syntax for
subscripts. This will work:
ggtern(data=x11,aes(A,B,C,xend = c(0.7,.00,0.7),yend =
c(.30,.50,.0),zend =c(.0,.50,0.3)))+
geom_point()+
theme_showarrows()+geom_segment(size=.5)+
geom_text_viewport(x=c(.45,.27,.37),y=c(.32,.29,.22),label=c("P[a]","P[b]","P[c]"),
parse=TRUE)
2008 Aug 01
1
parent in Creating environment object
Hi,
I would like to convert a simple list into an environment object. It seems I
have to create an environment object with new.env() and assign the single
values afterwards. Now what I did not really understand from the guides
until now is, how the parent environment supplied to the new.env() function
influence the final environment. So:
1. Do I ALWAYS have to supply a parent during creation?
2.
2017 Dec 04
1
ggtern and bquote...
D'oh! Thanks for pointing this out. I blame caffeine depletion at the time...
-pd
> On 4 Dec 2017, at 15:48 , Eik Vettorazzi <E.Vettorazzi at uke.de> wrote:
>
> reading ?plotmath you might notice that "_" isn't the propper syntax for
> subscripts. This will work:
>
> ggtern(data=x11,aes(A,B,C,xend = c(0.7,.00,0.7),yend =
> c(.30,.50,.0),zend
2018 Feb 22
1
Calculate LC50
Dear All: good morning
I need helps with the calculation of the *LC50* from the data below
x<-c(0,0.3,0.7,1,4,10)
y<-c(100,86,65,51.3,19.2,7.4)
yxreg<-lm(y~x)
any help will be highly appreciated.
with many thanks
abou
______________________
*AbouEl-Makarim Aboueissa, PhD*
*Professor of Statistics*
*Department of Mathematics and Statistics*
*University of Southern Maine*
2017 Dec 20
0
outlining (highlighting) pixels in ggplot2
Hi Eric,
you can use an annotate-layer, eg
ind<-which(sig>0,arr.ind = T)
ggplot(m1.melted, aes(x = Month, y = Site, fill = Concentration), autoscale
= FALSE, zmin = -1 * zmax1, zmax = zmax1) +
geom_tile() +
coord_equal() +
scale_fill_gradient2(low = "darkred",
mid = "white",
high = "darkblue",
2008 Sep 09
6
plotting group means
Hi all,
I want to plot the grouped means of some variables. The dependent variables
and the grouping factor are stored in different columns. I want to draw a
simple line-plot of means, in which the x-axis represents the variables and
y-axis represents the means. The means of the groups should be connected by
lines. So far, the only function that I could find comes closest to what I'm
2007 Dec 11
1
Mono in postscript device
Hi,
Plotting a graphic into a postscript device using family="mono" returns the
following error message:
>> family 'mono' not included in PostScript device
Looking at postscriptFonts() however lists the "Courier" font as availeable
mono font. So where is the problem?
Thanks guys for your help.
Best regards
Benjamin
sessionInfo()
R version 2.5.0
2017 Dec 04
1
YNT: ggtern and bquote...
Hi,
My example code is this;
x11<-data.frame(A=c(.6,.6,.6),B=c(.20,.20,.20),C=c(0.20,.20,.20))
ggtern(data=x11,aes(A,B,C,xend = c(0.7,.00,0.7),yend = c(.30,.50,.0),zend =c(.0,.50,0.3)))+
geom_point()+
theme_showarrows()+geom_segment(size=.5)+
geom_text_viewport(x=c(.45,.27,.37),y=c(.32,.29,.22),label=as.expression("P_a","P_b","P_c"))
2007 Jan 08
7
bimodal PAE and compatibility
We currently ship a PAE 32-bit domU that we can trivially make bimodal,
except that if we set it to "bimodal", then older Xens will default to
thinking the domU is not PAE:
353 dsi->pae_kernel = PAEKERN_no;
354 if ( dsi->__elfnote_section )
355 {
356 p = xen_elfnote_string(dsi, XEN_ELFNOTE_PAE_MODE);
357 if ( p != NULL && strncmp(p,
2017 Dec 20
2
outlining (highlighting) pixels in ggplot2
Using the small reproducible example below, I'd like to know if one can
somehow use the matrix "sig" (defined below) to add a black outline (with
lwd=2) to all pixels with a corresponding value of 1 in the matrix 'sig'?
So for example, in the ggplot2 plot below, the pixel located at [1,3] would
be outlined by a black square since the value at sig[1,3] == 1. This is my
first
2018 Apr 18
0
Problem with regression line
Hi, Anne,
assign Age and Bloodpressure in the correct order
to the axes in your call to plot as in:
plot(y = Age, x = BloodPressure)
abline(SimpleLinearReg1)
Hth -- Gerrit
---------------------------------------------------------------------
Dr. Gerrit Eichner Mathematical Institute, Room 212
gerrit.eichner at math.uni-giessen.de Justus-Liebig-University Giessen
Tel:
2009 Apr 08
3
MLE for bimodal distribution
Hello everyone,
I'm trying to use mle from package stats4 to fit a bi/multi-modal
distribution to some data, but I have some problems with it.
Here's what I'm doing (for a bimodal distribution):
# Build some fake binormally distributed data, the procedure fails also with
real data, so the problem isn't here
data = c(rnorm(1000, 3, 0.5), rnorm(500, 5, 0.3))
# Just to check
2005 Dec 02
3
bimodal data
Hi,
Does anybody have a good tip of how to treat bimodal data to perform statistical analyses? My data set ranges from -1 to 1 (any values are posssible in between) and most data are either close to -1 or close to 1. They are the results of a two choice experiment where individuals could choose more than once in either direction and scores were calculated.
Simone
Simone Immler