Displaying 20 results from an estimated 59 matches for "0.0025".
2012 Sep 11
4
R calculates small numbers, where the result should be zero
Hi all,
my problem is that R does wrong calculations, when the result should be zero.
I have the following code:
RD_Var1 <- ((0.1*(1-0.1))/100)+((0.2*(1-0.2))/100)
RD_Var2 <- ((0.1*(1-0.1))/100)+((0.2*(1-0.2))/100)
RD_1 <- 0.1-0.2
RD_1
RD_2 <- 0.1-0.2
FEM_Eff_RD <- ((1/RD_Var1)*RD_1+(1/RD_Var2)*RD_2)/(1/RD_Var1+1/RD_Var2)
Q_RD <-
2013 Feb 01
29
cumulative sum by group and under some criteria
Thank you very much for your reply. Your code work well with this example.
I modified a little to fit my real data, I got an error massage.
Error in split.default(x = seq_len(nrow(x)), f = f, drop = drop, ...) :
Group length is 0 but data length > 0
On Thu, Jan 31, 2013 at 12:21 PM, arun kirshna [via R] <
ml-node+s789695n4657196h87@n4.nabble.com> wrote:
> Hi,
> Try this:
>
2007 Apr 25
4
How to solve difficult equations?
This below is not solvable with uniroot to find "a":
fn=function(a){
b=(0.7/a)-a
(1/(a+b+1))-0.0025
}
uniroot(fn,c(-500,500)) gives
"Error in uniroot(fn, c(-500, 500)) : f() values at end points not of
opposite sign"
I read R-help posts and someone wrote a function:
http://finzi.psych.upenn.edu/R/Rhelp02a/archive/92407.html
but it is not very precise. Is there any
2009 Feb 08
0
Initial values of the parameters of a garch-Model
Dear all,
I'm using R 2.8.1 under Windows Vista on a dual core 2,4 GhZ with 4 GB
of RAM.
I'm trying to reproduce a result out of "Analysis of Financial Time
Series" by Ruey Tsay.
In R I'm using the fGarch library.
After fitting a ar(3)-garch(1,1)-model
> model<-garchFit(~arma(3,0)+garch(1,1), analyse)
I'm saving the results via
> result<-model
2008 Feb 03
0
[LLVMdev] 2.2 Prerelease available for testing
Target: FreeBSD 6.2-STABLE on i386
autoconf says:
configure:2122: checking build system type
configure:2140: result: i386-unknown-freebsd6.2
[...]
configure:2721: gcc -v >&5
Using built-in specs.
Configured with: FreeBSD/i386 system compiler
Thread model: posix
gcc version 3.4.6 [FreeBSD] 20060305
[...]
objdir != srcdir, for both llvm and gcc.
Release build.
llvm-gcc 4.2 from source.
2003 May 26
0
as.matrix() problem in mantel.test()?
Dear all,
I get an unexpected error when using the mantel.test function in
library(ape). Is there something wrong with my matrices?
> dmatr<- read.table("obt.Loiselle.kinship.intens02.DIST.matrix.txt",head=F)
> kmatr<-
read.table("obt.Loiselle.kinship.intens02.KINSHIP.matrix.txt",head=F)
>
> mantel.test(as.matrix(kmatr), as.matrix(dmatr), nperm = 500, graph
2004 Dec 02
1
treatment contrasts and summary.lm
Dear list members,
I have a 2-factor ANOVA where the summary.lm output looks like this
(using treatment contrasts):
Value Std. Error t value Pr(>|t|)
(Intercept) 0.0389 0.0220 1.7695 0.0817
as.factor(Block)1 0.0156 0.0066 2.3597 0.0215
as.factor(Block)2 -0.0018 0.0037 -0.4857 0.6289
as.factor(Block)3 -0.0007 0.0026 -0.2812 0.7795
2006 Jul 06
1
a question about glm( )
Hi,
I am working on an example about generalized linear model in a paper using
glm( ). The code is quite simple and straightforward, but the result is
rediculous. The true parameter is c(4, -6), but the result is c(2.264774,
-3.457114) Can anybody tell me the reason for this? Thanks a lot!!!
Here is the code:
g=function(t){exp(t)/(1+exp(t))} #the given link function
n = 100 # sample size
2011 May 18
1
Convolution confusion:
Hi,
I'm new to R, and I'm a bit confused with the "convolve()" function.
If I do:
x<-c(1, 2, 3)
convolve(x, rev(x), TRUE, "open")
= 9 12 10 4 1
But I expected: 3 8 14 8 3 (like in Octave/MATLAB - conv(x, reverse(x)) )
3 2 1 x 1 2 3
= 3 2 1
0 6 4 2
0 0 9 6 3
= 3 8 14 8 3
The thing is, that "convolve(x, x, TRUE, "open")" works.
For me
2008 Jan 24
6
[LLVMdev] 2.2 Prerelease available for testing
LLVMers,
The 2.2 prerelease is now available for testing:
http://llvm.org/prereleases/2.2/
If anyone can help test this release, I ask that you do the following:
1) Build llvm and llvm-gcc (or use a binary). You may build release
(default) or debug. You may pick llvm-gcc-4.0, llvm-gcc-4.2, or both.
2) Run 'make check'.
3) In llvm-test, run 'make TEST=nightly report'.
4) When
2007 Sep 18
0
[LLVMdev] 2.1 Pre-Release Available (testers needed)
On Fri, Sep 14, 2007 at 11:42:18PM -0700, Tanya Lattner wrote:
> The 2.1 pre-release (version 1) is available for testing:
> http://llvm.org/prereleases/2.1/version1/
>
> [...]
>
> 2) Download llvm-2.1, llvm-test-2.1, and the llvm-gcc4.0 source.
> Compile everything. Run "make check" and the full llvm-test suite
> (make TEST=nightly report).
>
> Send
2009 Jun 03
1
Would like to add this to example for plotmath. Can you help?
Greetings:
I would like comments on this example and after fixing it up, I need
help from someone who has access to insert this in R's help page for
plotmath.
I uploaded a drawing
http://pj.freefaculty.org/R/Normal-2009.pdf
that is created by the following code
http://pj.freefaculty.org/R/Normal1_2009_plotmathExample.R
This will be a good addition to the plotmath help page/example.
2011 May 03
1
Unexp. behavior from boot with multiple statistics
I am attempting to use package boot to summarize and compare the performance
of three models. I'm using R 2.13.0 in a Win32 environment.
My statistic function returns a vector of 6 values, 3 of which are error
rates for different models, and 3 are pairwise differences between those
error rates. It looks like:
multiEst<-function(dat,i)
{
....
c(E1,E2,E3,E2-E1,E3-E1,E3-E2);
}
2012 Jul 17
1
about different bandwidths in one graph
Thank you in advance.
Now I want to make comparison of the different bandwidth h in a normal
distribution graph.
This is the table of bandwidth h: thumb rule (normal)--0.00205; thumb
rule(Epanech.)--0.00452; Plug-in (normal)--0.0009;
Plug-in(Epanech.)--0.002.
this is the condition: N=1010 data sample is from normal distribution
N(0,0.0077^2). The grid points are taken to be [-0.05,0.05] and
2008 Jan 28
0
[LLVMdev] 2.2 Prerelease available for testing
Target: FreeBSD 7.0-RC1 on amd64.
autoconf says:
configure:2122: checking build system type
configure:2140: result: x86_64-unknown-freebsd7.0
[...]
configure:2721: gcc -v >&5
Using built-in specs.
Target: amd64-undermydesk-freebsd
Configured with: FreeBSD/amd64 system compiler
Thread model: posix
gcc version 4.2.1 20070719 [FreeBSD]
[...]
objdir != srcdir, for both llvm and gcc.
Release
2007 Sep 21
1
Help create a loopto conduct multiple pairwise operations
#Hello,
#I have three data frames, X,Y and Z with two columns each and different
numbers of rows.
# creation of data frame X
X.alleles <- c(1,5,6,7,8)
X.Freq <- c(0.35, 0.15, 0.05 , 0.10, 0.35)
Loc1 <- cbind( X.alleles,X.Freq)
X <- data.frame(Loc1)
#creation of data frame Y
Y.alleles <- c(1,4,6,8)
Y.Freq <- c(0.35, 0.35, 0.10, 0.20 )
2013 Jan 24
4
Difference between R and SAS in Corcordance index in ordinal logistic regression
lrm does some binning to make the calculations faster. The exact calculation
is obtained by running
f <- lrm(...)
rcorr.cens(predict(f), DA), which results in:
C Index Dxy S.D. n missing
0.96814404 0.93628809 0.03808336 32.00000000 0.00000000
uncensored Relevant Pairs Concordant Uncertain
32.00000000
2012 Feb 21
5
help error: In dweibull(x, shape, scale, log) : NaNs produzidos
Guys,
I'm having an error when I use the command:
library(MASS)> dados<-read.table("inverno.txt",header=FALSE)> vento50<-fitdistr(dados[[1]],densfun="weibull")Mensagens de aviso perdidas:1: In dweibull(x, shape, scale, log) : NaNs produzidos2: In dweibull(x, shape, scale, log) : NaNs produzidos3: In dweibull(x, shape, scale, log) : NaNs produzidos4: In
2005 Jul 01
0
[LLVMdev] execution time of bytecode and native
On Thu, 30 Jun 2005, Tanu Sharma wrote:
> I am compiling SPEC 2000 benchmarks with llvm .Got stuck with
> calculating "execution time" of all the .bc and native files.
>
> The log for nightly test itself gives execution times but I am passing
> the bytecode files to my pass which gives another bytecode file.I have
> to calculate execution time of such bytecode and
2011 Apr 09
2
[LLVMdev] dragonegg/llvm-gfortran/gfortran benchmarks
With the case-insensitive file system patch from http://llvm.org/bugs/show_bug.cgi?id=9656#c15
applied to dragonegg 2.9, the following Polyhedron 2005 benchmarks are seen on x86_64-apple-darwin10
under gcc 4.5.3svn using the dragonegg plugin...
================================================================================
Date & Time : 8 Apr 2011 19:52:56
Test Name :