Displaying 20 results from an estimated 9000 matches similar to: "Nonparametric bivariate distribution estimation and sampling"
2010 Feb 10
3
Sampling from Bivariate Uniform Distribution
Hello all!!!
1) I am wondering is there a way to generate random numbers in R for Bivariate Uniform distribution?
2) Does R have built-in function for generating random numbers for any given bivariate distribution.
Any help would be greatly appreciated !!
Good day!
Haneef Anver
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2009 Jun 05
2
Install RCurl in Linux
Hello all,
I had both curl and curl-devel
(both 7.15) installed on my x86_64/CentOS machine. However, I still got problem
when I do
R CMD INSTALL RCurl
Error message below,
since library and/or include path is missing. I tried
R CMD INSTALL RCurl
--configure-args='--libdir=/usr/lib64/
--includedir=/usr/include/'
Same result. Any
hint/suggestion would be appreciated.
...
No
2004 Oct 12
1
bandwidths for bivariate density estimation
Hi,
I am using the KernSmooth package to estimate nonparametrically bivariate
density functions. However, it seems that the bandwidths (one for each
co-ordinate direction) have to be selected manually. This does not apply
for the univariate case, for which dpik (included in KernSmooth) uses
up-to-date plug-in rules.
Does anyone know about a package, or function, which estimates bandwidths
2006 May 11
2
Maximum likelihood estimate of bivariate vonmises-weibull distribution
Hi,
I'm dealing with wind data and I'd like to model their distribution in
order to simulate data to fill-in missing values. Wind direction are
typically following a vonmises distribution and wind speeds follow a
weibull distribution. I'd like to build a joint distribution of
directions and speeds as a VonMises-Weibull bivariate distribution.
First is this a stupid question? I'm
2008 Jun 28
1
How to estimate the parameters in a bivariate weibull distribution?
Hi,Dear all R experts,
As far as I know, fitdistr() is only to estimate the parameters in univariate distributions. I have a set of data (x,y) and I assume it follows a bivariate weibull distribution. Could someone tell me a function in R that is suitable for parameter estimation in multivariate cases? Thanks in advance!
Cheers,
YAN
2010 Jan 01
2
How to calculate density function of Bivariate binomial distribution
Am trying to do some study on bivariate binomial distribution. Anyone knows
if there is package in R that I can use to calculate the density function of
bivariate binomial distribution and to generate random samples of it.
Thanks,
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2008 Jan 23
2
from a normal bivariate distribution to the marginal one
Hello,
I'm quite new with R and so I would like to know if there is a command
to calculate an integral.
In particular I simulated a bivariate normal distribution using these
simple lines:
rbivnorm <- function(n, # sample size
mux, # expected value of x
muy, # expected value of Y
sigmax, # standard deviation of
2011 Jun 14
2
How to generate bivariate exponential distribution?
Any one know is there any package or function to generate bivariate
exponential distribution? I gusee there should be three parameters, two rate
parameters and one correlation parameter. I just did not find any function
available on R. Any suggestion is appreciated.
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2002 Nov 12
1
Probabilities for bivariate normal distribution with adapt
Dear R-List:
I`m trying to calculate the probabilities for a bivariate normal
distribution while using the mvtnorm-package(dmvnorm) and the
adapt-package for multidimensional integration.
The problem is that I can`t specify the upper bound in the adapt-package
the way I need it because I don`t need a rectangular area. I want to
calculate the probability starting at the origin under the line y=x.
2007 Apr 03
1
bivariate interpolation
Hi. I'm trying to take a data set with two independent and one dependent
variable and enter a x,y value to predict the dependent with a nonparametric
technique. I've been using interpp in the akima package, (windows xp, R
2.4.1), but get values that are orders of magnitude off when the predictors
are slightly out of the range of the data set. Can you recommend a function
for me?
2018 Apr 12
3
Bivariate Normal Distribution Plots
R-Help
I am attempting to create a series of bivariate normal distributions. So using the mvtnorm library I have created the following code ...
# Standard deviations and correlation
sig_x <- 1
sig_y <- 1
rho_xy <- 0.0
# Covariance between X and Y
sig_xy <- rho_xy * sig_x *sig_y
# Covariance matrix
Sigma_xy <- matrix(c(sig_x ^ 2, sig_xy, sig_xy, sig_y ^ 2), nrow = 2, ncol = 2)
2006 Feb 13
2
bivariate normal distribution
Hi, there.
Does anyone know the R function for calculating the cdf of bivariate
normal distribution function?
Thanks.
Yulei
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2005 Mar 24
2
Bivariate lognormal distribution
Dear experts!
Is there a package that enables to create the bivariate log-normal variables?
Thanks a lot,
Vicky Landsman.
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2007 Jul 25
2
Regarding Bivariate normal distribution.
Dear all R gurus,
My question is related to statistics rather directly to R. Suppose
(X,Y) has a bivariate normal distrubution. I want to find two values
of X and Y say x, and y respectively, such that:
P[X<x, Y<y] = 0.05
My questions are :
1. Can x and y be uniquely found?
2. If it is, how I can find them using R
Your help will be highly appreciated.
Thanks and regards,
2005 Mar 18
1
Bivariate normal distribution and correlation
Suppose I know the value of cumulative bivariate standard normal distribution. How can I solve correlation between variables?
Pekka
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2012 Dec 19
1
Theoretical confidence regions for any non-symmetric bivariate statistical distributions
Respected R Users,
I looking for help with generating theoretical confidence regions for any
of non-symmetric bivariate statistical distributions (bivariate Chi-squared
distribution<Wishart distribution>, bivariate F-distribution, or any of the
others). I want to to used it as a benchmark to compare a few strategies
constructing confidence regions for non-symmetric bivariate data.
There is
2010 Aug 24
1
break the long R code lines automatically
Dear
all,
I have
written some R source program with many thousands of lines. I didn’t insert
line breaks automatically or manually for the long lines. But now I would like
to edit the source code in Emacs/ESS to make it more formal as a package. One of
the major problems here is how to break the long lines automatically. Emacs auto-fill-mode
only works for the lines you are typing in currently,
2006 Apr 23
3
bivariate weighted kernel density estimator
Is there code for bivariate kernel density estimation?
For bivariate kernels there is
kde2d in MASS
kde2d.g in GRASS
KernSur in GenKern
(list probably incomplete)
but none of them seems to accept a weight parameter
(like density does since R 2.2.0)
--
Erich Neuwirth, University of Vienna
Faculty of Computer Science
Computer Supported Didactics Working Group
Visit our SunSITE at
2009 Mar 29
1
Quantiles for bivariate normal distribution
Hi,
Does anyone know how to write a R function to solve the quantile c for the
following equation.
P(Z1>1.975, Z2<c)+ P(Z1>c, Z2>c)=0.05/6.
Z1 and Z2 have a bivariate normal distribution with mean 0, variance 1 and
correlation 0.5.
Thanks a lot!
Hannah
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2010 Oct 20
1
Generate variable with Bivariate Normal Distribution
Dear All
I want to generate variable with Bivariate Normal Distribution by
use mean1 = a, variance1 = b, mean2 = c, variance2 = d, rho = e.
How I can do this.
Many Thanks.
IRD
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