Displaying 20 results from an estimated 37 matches for "gersen".
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gerben
2007 Oct 24
2
analytical solution to Sum of binominal distributed random numbers?
Frede Aakmann T?gersen wrote:
> Perhaps
>
> http://stinet.dtic.mil/cgi-bin/GetTRDoc?AD=ADA266969&Location=U2&doc=GetTRDoc.pdf
>
> is something that you can use?
Thanks a lot - that might help.
Rainer
>
>
>
> Best regards
>
> Frede Aakmann T?gersen
> Scientist
>
>...
2007 Jul 05
1
getting values from arrays using which()
Dear R-Help,
I have an array 1260x1260, upper triangle consisting of numbers between 0 and 100, and lower triangle all NA. I can extract the index of those values say above 99 using the following code:
which(myArray>=99 , ind.arr=T)
which returns:
row col
5475 252 253
45423 764 765
46902 777 778
34146 611 962
50681 1220 1221
Now I would like to if poss print the actual value
2007 Sep 27
3
different colors for two wireframes in same plot
Hello R,
According to:
g <- expand.grid(x = 1:10, y = 5:15, gr = 1:2)
g$z <- log((g$x^g$g + g$y^2) * g$gr)
wireframe(z ~ x * y, data = g, groups = gr,
scales = list(arrows = FALSE),
drape = TRUE, colorkey = TRUE,
screen = list(z = 30, x = -60))
i have two wireframes in one plot.
How could i change the color of the top - one to transparent (or only the grid).
2007 Sep 28
0
transparency of one layer in multiple wireframe plot
...= list(z = 30, x = -60))
you get a two color pic of these layers - and what I'm actually looking for is making just the UPPER (toplayer) transparent.
Thanks for further help
marc
-------- Original-Nachricht --------
> Datum: Thu, 27 Sep 2007 11:29:19 +0200
> Von: "Frede Aakmann T?gersen" <FredeA.Togersen at agrsci.dk>
> An: "marcg" <mdgi at gmx.ch>, r-help at stat.math.ethz.ch
> Betreff: SV: [R] different colors for two wireframes in same plot
> You can obtain some transparency setting the alpha transparency. This is
> device dependent thoug...
2009 Apr 02
7
[Lguest] [PATCH 4/5] lguest: use KVM hypercalls
...time it holds the values that are
patched in by rewrite_hypercall.
> + return insn[0] == 0x0f && insn[1] == 0x01 && insn[2] == 0xc1;
> +}
I'll investigate further tomorrow, unless someone is already on top of
this. My kernel is 2.6.29-07100-g833bb30 btw.
Simon Holm Th?gersen
2009 Apr 02
7
[Lguest] [PATCH 4/5] lguest: use KVM hypercalls
...time it holds the values that are
patched in by rewrite_hypercall.
> + return insn[0] == 0x0f && insn[1] == 0x01 && insn[2] == 0xc1;
> +}
I'll investigate further tomorrow, unless someone is already on top of
this. My kernel is 2.6.29-07100-g833bb30 btw.
Simon Holm Th?gersen
2007 Oct 29
1
meaning of lenwrk value in adapt function
R-listers,
In using the adapt function, I am getting the following warning:
Ifail=2, lenwrk was too small. -- fix adapt() !
Check the returned relerr! in: adapt(ndim = 2, lower = lower.limit,
upper = upper.limit, functn = pr.set,
Would someone explain what the 'lenwrk' value indicates in order to help
diagnose this issue.
Also, what are the possible codes for Ifail, so I can set
2006 Oct 17
1
About compositional data analysis
The compositional data xi=(x_i1,x_i2,...,x_in), for each fixed i , xij>0,
and sum(xij)=1;
I want to compare the mean( u_i) of several groups
i.e.
H0: u_1=u_2=...=u_N
or
H0: u_11=u_21=...=u_N1
Are there any ANOVA tpye tools to do this work in R?
Thanks,
WEN S Q
[[alternative HTML version deleted]]
2007 Sep 27
1
including images in a plot
Does anyone know if it is possible to incorporate image files (e.g., jpgs
or gifs) in an R graphic?
I would like to make a scatterplot in which each point is a small picture
of the animal represented by each value. Each picture would be a graphics
file. Is there some way to use such files as plot symbols in R?
Cheers,
Steve
--
--------------------------------------------------------
Steve C.
2014 Jan 21
1
RFC 5267 Contexts for IMAP4 PARTIAL results
Hello,
I am looking at PARTIAL responses using a dovecot version 2.2.5 and am running
into an inconsistency with the RFC which I would like to ask about. The following
section
http://tools.ietf.org/html/rfc5267#section-4.4
lists client requests and server responses which I have tried running against a folder,
specifying the ranges that fit the contents of the folder I have selected.
2005 Oct 03
3
spline.des
Hello, I am using library fda and I can not run a lot of functions because
I receive the error:
Error in bsplineS(evalarg, breaks, norder, nderiv) :
couldn't find function "spline.des"
do you know how I can fix that? Thnaks. Liliana
2007 Aug 04
2
Problems using "lm" in combination with "predict"
Hello everybody,
I'm trying to predict a linear regression model but it does not work.
My Model: y = Worktime + Vacation + Illnes + Bankholidays
My modelmatrix is of dimension 28x4
Then I want to make use of the function predict because there confidence.intervals are include.
My idea was:
mod <- lm(y~Worktime+Vacation+Illnes+Bankholidays)
newdate=data.frame(x=c(324,123,0.9,0.1))
2006 Mar 09
0
When calling external C-function repeatedly I get differentresults; can't figure out why..
Not an expert in programming either, but to me it seems like you've forgotten to initialize the variable "tr". It just picks up garbage from allocated memory previously initialized by other processes.
Med venlig hilsen
Frede Aakmann T?gersen
> -----Oprindelig meddelelse-----
> Fra: r-help-bounces at stat.math.ethz.ch
> [mailto:r-help-bounces at stat.math.ethz.ch] P? vegne af S?ren H?jsgaard
> Sendt: 9. marts 2006 02:15
> Til: r-help at stat.math.ethz.ch
> Emne: [R] When calling external C-function repeatedly I...
2008 Feb 15
1
How to estimate the parameters of differential equations from data
Hello list
I have a theoretical differential equation model (two coupled differential
equations) describing the acidification of dairy cultures in milk:
dX/dt = f(H, param)*X
dH/dt = g(param)*dX/dt
pH = -log10(H)
I also have actual data of the same.
I would like to estimate the parameters of the theoretical model from real
data, but don't know how to go about it in R (I'm fairly new
2006 Jan 31
0
lattice: combining panel.xyplot with panel.abline - is thispossible?
...cripts,...){
panel.xyplot(x,y,subscripts,...)
panel.abline(v=dat[subscripts,"cm1"])
panel.abline(v=dat[subscripts,"cm2"])
}
)
Since I don't know what the dataframe 'mergeData' is I have used 'dat'.
Best regards
Frede Aakmann T??gersen
Scientist
Danish Institute of Agricultural Sciences
Research Centre Foulum
Dept. of Genetics and Biotechnology
Blichers All?? 20, P.O. BOX 50
DK-8830 Tjele
Phone: +45 8999 1900
Direct: +45 8999 1878
E-mail: FredeA.Togersen at agrsci.dk
Web: http://www.agrsci.org
This email may conta...
2007 Oct 23
1
Custom colourkey spacing in levelplot, contourplot
Dear R gurus,
I have got stuck on how to customise the colorkey generated by
levelplot and contourplot, in the lattice package. This best
illustrated by an example:
library(lattice)
levelplot(volcano^20/1e45,at=c(0,0.001,0.01,0.1,1,10))
The reason for raising the volcano dataset to the 20th power is to
create a dataset with a large vertical exaggeration - this is similar
in nature to the data
2007 Nov 12
2
how to randomize a vector
I have a vector whose length is nearly 70 thousand.
I need randomize it for 1000 times .
for randomizing , I mean ,the elements of the vector remain intact while
their order in the vector get changed randomly.
I have written a function which seems to be able to solve short vectors ,
but waste a lot of time when dealing with the the long vector mentioned
above.
--
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2007 Oct 03
3
P-value
Hi,
why don't you try try
ks.test(VeriSeti1, VeriSeti2)$p.value
All the best
Jenny
>How can i print only the P-Value of the kolmogorov smirnov test?
>
>
>> ks.test(VeriSeti1, VeriSeti2)
>
> Two-sample Kolmogorov-Smirnov test
>
>data: VeriSeti1 and VeriSeti2
>D = 0.5, p-value = 0.4413
>alternative hypothesis: two-sided
>
>
>This expression
2007 Aug 07
2
R and excell differences in calculation F distributionfunction
R-help,
I'm trying to work out the density function by doing:
> df(5.22245, 3, 22)
[1] 0.005896862
> df(15.20675, 6, 4)
[1] 0.001223825
In excell the result is :
0.0071060464 <*> FDIST(5.22245,3,22)
0.0100001406 <--> FDIST(15.20675,6,4)
>From my point of view the differences in the second case
are substantial.
Can anyone give me a hint on this?
Thanks in
2007 Sep 10
1
overlay lattice histograms with goodness-of-fit pdfs
Hello,
I am new to R exploratory data analysis and plotting. Is anyone aware of a way
to overlay a set of conditional histograms with conditional PDFs? Below, I
generate a lattice plot of precipitation histograms based on different months
and stations, given a subset of the dataset:
histogram(~ data | month * station,
data = sta.stack[sta.stack[,"type"]=="precip" &