Displaying 20 results from an estimated 31 matches for "dcauchy".
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cauchy
2010 May 28
3
Gelman 2006 half-Cauchy distribution
...ributions for variance parameters in hierarchical
models" in Bayesian Analysis, 3, 515-533. I am only interested, however,
in recreating the portion of the graph for the overlain prior density
for the half-Cauchy with scale 25 and not the posterior distribution.
However, when I try:
curve(dcauchy, from=0, to=200, location=0, scale=25)
the probabilities for the half-Cauchy values seem to approach zero
almost immediately after 0 whereas in Gelman 2006 the tail appears much
fatter giving non-zero probabilities out to 100.
I am interested in replicating this because I want to use half-Cauch...
2010 Mar 12
2
Question regarding to maxNR
...ntly, I use maxNR function to find maximizer. I have error appears as follows
Error in maxNRCompute(fn = fn, grad = grad, hess = hess, start = start, :
NA in the initial gradient
My code is
mu=2
s=1
n=300
library(maxLik)
set.seed(1004)
x<-rcauchy(n,mu,s)
loglik<-function(mu)
{
log(prod(dcauchy(x,mu,s)))
}
maxNR(loglik,start=median(x))$estimate
Does anyone know how to solve this problem?
Thanks,
Kate
[[alternative HTML version deleted]]
2007 Oct 31
1
Simple Umacs example help..
...term.
x <- c(1.808,1.799,1.179,0.574,3.727,0.946,3.719,1.566,3.596,3.253)
y <- c(1.816,1.281,-1.382,0.573,3.793,0.935,1.775,1.474,3.679,3.889)
fn = function(x,a=0,b=1){
a+b*x
}
sample.ab <-function(x,y,a,b,s,da,db){
bstar = runif(1,b-db,b+db)
astar = runif(1,a-da,a+da)
logalpha = sum(dcauchy(y,location=fn(x,astar,bstar),scale=s,log=T) -
dcauchy(y,location=fn(x,a,b),scale=s,log=T))
logu = log(runif(1,0,1))
acc = (logu < logalpha)
b = acc*bstar + (1-acc)*b
a = acc*astar + (1-acc)*a
list(b=b,a=a,acc=acc)
}
samples = function(x,y,a,b,s,ds){
sstar = runif(1,s-ds,s+ds)
while(sstar...
2010 Nov 30
1
rcauchy density distribution
...hat I'm doing wrong? Thanks
x <- rchisq(10000, df = 4)
hist(x, freq = FALSE, breaks=100)
curve(dchisq(x, df = 4), col = 2, add = TRUE)
x <- rnorm(10000)
hist(x, freq = FALSE, breaks=100)
curve(dnorm(x), col = 2, add = TRUE)
x <- rcauchy(10000)
hist(x, freq = FALSE, breaks=100)
curve(dcauchy(x), col = 2, add = TRUE)
[[alternative HTML version deleted]]
2008 Aug 21
1
pnmath compilation failure; dylib issue?
...er/SDKs/MacOSX10.4u.sdk -mmacosx-
version-min=10.4 -std=gnu99 -dynamiclib -Wl,-
headerpad_max_install_names -mmacosx-version-min=10.4 -undefined
dynamic_lookup -single_module -multiply_defined suppress -L/usr/local/
lib -o pnmath.so bd0.o beta.o chebyshev.o choose.o d1mach.o dbeta.o
dbinom.o dcauchy.o dchisq.o dexp.o df.o dgamma.o dgeom.o dhyper.o
dlnorm.o dlogis.o dnbeta.o dnbinom.o dnchisq.o dnf.o dnorm.o dnt.o
dpois.o dt.o dunif.o dweibull.o fmax2.o fmin2.o ftrunc.o gamma.o
gamma_cody.o i1mach.o imax2.o imin2.o lbeta.o lgamma.o lgammacor.o
mlutils.o pbeta.o pbinom.o pcauchy.o pchisq...
2009 Oct 04
3
error installing/compiling kernlab
Hi everybody,
I''m using R on a 64-bit Ubuntu 9.04 (Jaunty). I prefer to install R
packages from source, even if they are available in Synaptic. The
problem is that I can''t install/compile kernlab. Everything works fine
until it gets to the lazy loading part:
** preparing package for lazy loading
Creating a new generic function for "terms" in "kernlab"
2009 Mar 17
3
R does not compile any more on FreeBSD 8.0-CURRENT
....o qgamma.o rgamma.o
dbeta.o pbeta.o qbeta.o rbeta.o dunif.o punif.o qunif.o runif.o dnorm.o
pnorm.o qnorm.o rnorm.o dlnorm.o plnorm.o qlnorm.o rlnorm.o df.o pf.o
qf.o rf.o dnf.o dt.o pt.o qt.o rt.o dnt.o dchisq.o pchisq.o qchisq.o
rchisq.o rnchisq.o dbinom.o pbinom.o qbinom.o rbinom.o rmultinom.o
dcauchy.o pcauchy.o qcauchy.o rcauchy.o dexp.o pexp.o qexp.o rexp.o
dgeom.o pgeom.o qgeom.o rgeom.o dhyper.o phyper.o qhyper.o rhyper.o
dnbinom.o pnbinom.o qnbinom.o rnbinom.o dpois.o ppois.o qpois.o rpois.o
dweibull.o pweibull.o qweibull.o rweibull.o dlogis.o plogis.o qlogis.o
rlogis.o dnchisq.o pnchis...
2007 Aug 29
3
OT: distribution of a pathological random variate
Folks,
I wonder if anything could be said about the distribution of a random variate x, where
x = N(0,1)/N(0,1)
Obviously x is pathological because it could be 0/0. If we exclude this point, so the set is {x/(0/0)}, does x have a well defined distribution? or does it exist a distribution that approximates x.
(The case could be generalized of course to N(mu1, sigma1)/N(mu2, sigma2) and one
1997 Dec 13
1
R-beta: Compile error; R-0.60.1, Solaris 2.6, gcc 2.7.2.1
....o
gcc -g -I../include -c qbeta.c -o qbeta.o
gcc -g -I../include -c rbeta.c -o rbeta.o
gcc -g -I../include -c dbinom.c -o dbinom.o
gcc -g -I../include -c pbinom.c -o pbinom.o
gcc -g -I../include -c qbinom.c -o qbinom.o
gcc -g -I../include -c rbinom.c -o rbinom.o
gcc -g -I../include -c dcauchy.c -o dcauchy.o
gcc -g -I../include -c pcauchy.c -o pcauchy.o
gcc -g -I../include -c qcauchy.c -o qcauchy.o
gcc -g -I../include -c rcauchy.c -o rcauchy.o
gcc -g -I../include -c dchisq.c -o dchisq.o
gcc -g -I../include -c pchisq.c -o pchisq.o
gcc -g -I../include -c qchisq.c -o qchisq.o
gc...
2004 Aug 10
0
Check failed after compilation (PR#7159)
...=4)
> mtext("log(dbinom(k))", col="red", adj=1)
>
>
>
> cleanEx(); ..nameEx <- "Cauchy"
>
> ### * Cauchy
>
> flush(stderr()); flush(stdout())
>
> ### Name: Cauchy
> ### Title: The Cauchy Distribution
> ### Aliases: Cauchy dcauchy pcauchy qcauchy rcauchy
> ### Keywords: distribution
>
> ### ** Examples
>
> dcauchy(-1:4)
[1] 0.15915494 0.31830989 0.15915494 0.06366198 0.03183099 0.01872411
>
>
>
> cleanEx(); ..nameEx <- "ChickWeight"
>
> ### * ChickWeight
>
> flush(st...
1999 May 03
1
problems compiling R-0.63.3 on alpha
...xact -g -I../include -I../../src/include -c pbinom.c -o
pbinom.o
gcc -ieee_with_inexact -g -I../include -I../../src/include -c qbinom.c -o
qbinom.o
gcc -ieee_with_inexact -g -I../include -I../../src/include -c rbinom.c -o
rbinom.o
gcc -ieee_with_inexact -g -I../include -I../../src/include -c dcauchy.c -o
dcauchy.o
gcc -ieee_with_inexact -g -I../include -I../../src/include -c pcauchy.c -o
pcauchy.o
gcc -ieee_with_inexact -g -I../include -I../../src/include -c qcauchy.c -o
qcauchy.o
gcc -ieee_with_inexact -g -I../include -I../../src/include -c rcauchy.c -o
rcauchy.o
gcc -ieee_with_inexact...
1998 Nov 06
1
DEC alpha INSTALLATION R-0.62.4
...clude -c rchisq.c
cc -ieee_with_inexact -g -I../../src/include -c dbinom.c
cc -ieee_with_inexact -g -I../../src/include -c pbinom.c
cc -ieee_with_inexact -g -I../../src/include -c qbinom.c
cc -ieee_with_inexact -g -I../../src/include -c rbinom.c
cc -ieee_with_inexact -g -I../../src/include -c dcauchy.c
cc -ieee_with_inexact -g -I../../src/include -c pcauchy.c
cc -ieee_with_inexact -g -I../../src/include -c qcauchy.c
cc -ieee_with_inexact -g -I../../src/include -c rcauchy.c
cc -ieee_with_inexact -g -I../../src/include -c dexp.c
cc -ieee_with_inexact -g -I../../src/include -c pexp.c
cc -ieee...
1999 May 03
0
compilation of R-0.63.3 on alpha (PR#183)
.../include -I../../src/include -c pbinom.c -=
o =
pbinom.o
gcc -ieee_with_inexact -g -I../include -I../../src/include -c qbinom.c -=
o =
qbinom.o
gcc -ieee_with_inexact -g -I../include -I../../src/include -c rbinom.c -=
o =
rbinom.o
gcc -ieee_with_inexact -g -I../include -I../../src/include -c dcauchy.c =
-o =
dcauchy.o
gcc -ieee_with_inexact -g -I../include -I../../src/include -c pcauchy.c =
-o =
pcauchy.o
gcc -ieee_with_inexact -g -I../include -I../../src/include -c qcauchy.c =
-o =
qcauchy.o
gcc -ieee_with_inexact -g -I../include -I../../src/include -c rcauchy.c =
-o =
rcauchy.o
gcc -i...
1997 Jul 09
1
R-beta: Problem with `rpois'
There is a problem with `rpois'. It does seem to take care about the
order of the arguments. This is an example:
> rpois(n=1,lambda=2)
[1] 3
> rpois(lambda=2,n=1)
[1] 2 0
It obviously uses the first argument as the number of samples to be
drawn, which is wrong.
I used Version 0.49 Beta (April 23, 1997).
Fredrik
1997 Jul 09
1
R-beta: Problem with `rpois'
There is a problem with `rpois'. It does seem to take care about the
order of the arguments. This is an example:
> rpois(n=1,lambda=2)
[1] 3
> rpois(lambda=2,n=1)
[1] 2 0
It obviously uses the first argument as the number of samples to be
drawn, which is wrong.
I used Version 0.49 Beta (April 23, 1997).
Fredrik
1998 Dec 08
0
R compile problems with AIX
...-I../../src/include -c dbinom.c -o dbinom.o
gcc -g -O2 -I../include -I../../src/include -c pbinom.c -o pbinom.o
gcc -g -O2 -I../include -I../../src/include -c qbinom.c -o qbinom.o
gcc -g -O2 -I../include -I../../src/include -c rbinom.c -o rbinom.o
gcc -g -O2 -I../include -I../../src/include -c dcauchy.c -o dcauchy.o
gcc -g -O2 -I../include -I../../src/include -c pcauchy.c -o pcauchy.o
gcc -g -O2 -I../include -I../../src/include -c qcauchy.c -o qcauchy.o
gcc -g -O2 -I../include -I../../src/include -c rcauchy.c -o rcauchy.o
gcc -g -O2 -I../include -I../../src/include -c dexp.c -o dexp.o
gcc -g...
1998 Dec 08
0
R compile problems with AIX
...-I../../src/include -c dbinom.c -o dbinom.o
gcc -g -O2 -I../include -I../../src/include -c pbinom.c -o pbinom.o
gcc -g -O2 -I../include -I../../src/include -c qbinom.c -o qbinom.o
gcc -g -O2 -I../include -I../../src/include -c rbinom.c -o rbinom.o
gcc -g -O2 -I../include -I../../src/include -c dcauchy.c -o dcauchy.o
gcc -g -O2 -I../include -I../../src/include -c pcauchy.c -o pcauchy.o
gcc -g -O2 -I../include -I../../src/include -c qcauchy.c -o qcauchy.o
gcc -g -O2 -I../include -I../../src/include -c rcauchy.c -o rcauchy.o
gcc -g -O2 -I../include -I../../src/include -c dexp.c -o dexp.o
gcc -g...
2002 Jan 22
1
compile problem with bessel_i.c on IRIX64 flexor 6.5 10100655 IP35 (uname -a) (PR#1275)
...rom pt.c
making qt.d from qt.c
making rt.d from rt.c
making dchisq.d from dchisq.c
making pchisq.d from pchisq.c
making qchisq.d from qchisq.c
making rchisq.d from rchisq.c
making dbinom.d from dbinom.c
making pbinom.d from pbinom.c
making qbinom.d from qbinom.c
making rbinom.d from rbinom.c
making dcauchy.d from dcauchy.c
making pcauchy.d from pcauchy.c
making qcauchy.d from qcauchy.c
making rcauchy.d from rcauchy.c
making dexp.d from dexp.c
making pexp.d from pexp.c
making qexp.d from qexp.c
making rexp.d from rexp.c
making dgeom.d from dgeom.c
making pgeom.d from pgeom.c
making qgeom.d from qgeom....
2017 Aug 18
4
No rule to make target all.R, needed by compiler.rdb building R 3.4.1 from source, Scientific Linux release 6.9 (Carbon)
...a.o qgamma.o
rgamma.o dbeta.o pbeta.o qbeta.o rbeta.o dunif.o punif.o qunif.o runif.o
dnorm.o pnorm.o qnorm.o rnorm.o dlnorm.o plnorm.o qlnorm.o rlnorm.o df.o
pf.o qf.o rf.o dnf.o dt.o pt.o qt.o rt.o dnt.o dchisq.o pchisq.o qchisq.o
rchisq.o rnchisq.o dbinom.o pbinom.o qbinom.o rbinom.o rmultinom.o
dcauchy.o pcauchy.o qcauchy.o rcauchy.o dexp.o pexp.o qexp.o rexp.o dgeom.o
pgeom.o qgeom.o rgeom.o dhyper.o phyper.o qhyper.o rhyper.o dnbinom.o
pnbinom.o qnbinom.o rnbinom.o dpois.o ppois.o qpois.o rpois.o dweibull.o
pweibull.o qweibull.o rweibull.o dlogis.o plogis.o qlogis.o rlogis.o
dnchisq.o pnchisq.o...
2001 Jul 25
2
Installation help
...rom pt.c
making qt.d from qt.c
making rt.d from rt.c
making dchisq.d from dchisq.c
making pchisq.d from pchisq.c
making qchisq.d from qchisq.c
making rchisq.d from rchisq.c
making dbinom.d from dbinom.c
making pbinom.d from pbinom.c
making qbinom.d from qbinom.c
making rbinom.d from rbinom.c
making dcauchy.d from dcauchy.c
making pcauchy.d from pcauchy.c
making qcauchy.d from qcauchy.c
making rcauchy.d from rcauchy.c
making dexp.d from dexp.c
making pexp.d from pexp.c
making qexp.d from qexp.c
making rexp.d from rexp.c
making dgeom.d from dgeom.c
making pgeom.d from pgeom.c
making qgeom.d from qgeom....