Displaying 20 results from an estimated 900 matches similar to: "GEV distribution fitted by L-moment graph"
2012 Jun 20
2
lmomco in gev estimation
Hi guys,
I'm trying to use lmomco package. first I did the manual calculation on
what is the estimates scale and location parameter given L-CV=0.2, L1=1000
L-moments and k (shape parameter) =- 0.1. so what i get is:
location: 821.0445
scale: 260.7590
shape: -0.1000
#I assign this as GEV vectors using vec2par
GEVpara2<-vec2par(c( 821.0445 , 260.7590 ,-0.1),'gev')
#then I
2010 Feb 22
1
lmom: plotting log Pearson Type III
Can anyone show me how to add a log Pearson type III plot using the
evdistq() command to an extreme value plot using the lmom package?
Attached sample code below...
Thanks in advance,
Dave
library(lmom)
# annual maximum daily streamflows Mackenzie River
mackenzieRiver = c(26600, 30300, 34000, 32000, 29200, 28300, 28600,
26400, 28300, 28800, 29000, 22100, 32900, 31800, 21600, 32100, 27000,
2009 Mar 16
1
Fw: Fitting GUMBEL Distribution - CDF function and P P Plot
Dera R Helpers,
I am re-posting my query.
Please guide me.
Maithili
--- On Fri, 3/13/09, Maithili Shiva <maithili_shiva at yahoo.com> wrote:
I am trying to fit the Gumbel distribution to a data. I am
using lmom package. I am getting problem in Cumulative
Distribution Function of Gumbel distribution as I am getting
it as a series of 0's and 1's thereby affecting the
P P
2009 Nov 16
1
lmomco package and confidence limits?
Hello,
I am using the lmomco package (lmom.ub and pargev) to compute the GEV
parameters (location, scale, and shape), which are used to estimate
return values. I was wondering how/if I can calculate upper and lower
confidence (CI_u, CI_l) intervals for each return frequency using the
GEV parameters to fill-in the table below?
Xi (location) = 35.396
Alpha (scale) = 1.726
Kappa (shape) =
2010 Jul 21
1
"lmomRFA" package: error bounds/confidence intervals
Dear List
I?m using the ?lmomRFA? package to fit different distributions to my data
sample. To calculate the error bounds I used:
regsimq(?)
and
sitequantbounds(?)
So my questions are:
Are error bounds and confidence intervals the same thing?
And: Does
regsimq(? boundprob = c(0.05, 0.95))
calculate the 90 or the 95% confidence interval?
If error bounds and confidence intervals are
2005 Dec 03
1
Fit Frechet Distribution
hello everybody
i want to use the maximum likelihood method to estimate FRECHET parameters of
my sample data.
Should it work with fitdistr in the package MASS?
I only find how to do it for GEV, Gumbel, and almost all other distributions,
but FRECHET?
I would be very happy if somebody can tell me how to do fit the FRECHET
distribution!
Thanks
Nadja Riedwyl
2012 Jan 04
1
KS and AD test for Generalized PAreto and Generalized Extreme value
Dear R helpers,
I need to use KS and AD test for Generalized Pareto and Generalized extreme value.
E.g. if I need to use KS for Weibull, I have teh syntax
ks.test(x.wei,"pweibull", shape=2,scale=1)
Similarly, for AD I use
ad.test(x, distr.fun, ...)
My problem is fir given data, I have estimated the parameters of GPD and GEV using lmom. But I am not able to find out the distribution
2013 Jul 17
2
error message in gev
Hi r-users,
I would like to use gev and my data (annual rainfall ) is as follows:
> head(dat,20) A B C D E F G H I J
1 45.1 41.5 58.5 50.1 46.0 49.1 37.7 49.1 59.8 54.0
2 50.3 39.8 49.4 56.4 49.4 48.8 42.1 49.8 49.4 58.3
3 41.7 39.3 44.6 39.1 35.7 41.5 40.8 40.8 38.5 45.6
4 50.7 33.9 48.4 28.2 35.5 39.1 61.4 17.0 30.7 38.3
5 39.3 30.6 46.9 23.8 25.8
2011 Aug 06
2
Gamma distribution parameter estimation
Hey,
I have a set of income data which I'd like to fit to a gamma
distribution. How can I estimate the two parameters of the gamma
distribution for a vector, e.g.
c(2039L, 2088L, 5966L, 2353L, 1966L, 2312L, 3305L, 2013L, 3376L,
3363L, 3567L, 4798L, 2032L, 1699L, 3001L, 2329L, 3944L, 2568L,
1699L, 4545L)
I sense this will be a very easy one-liner, but my searching didn't come
up with
2012 Jun 27
2
how to apply the same function to multiple data set
Hi R-users,
I'm trying to repeat the same procedure to 1000 data set. I know this is
very easy, but I got stuck finding the right and fastest way in running it.
IID50=Riidf[1:50,1:1000] #where IID50 is a dataframe consist of 1000 time
series(as column) and 50 time scales (row).
#what I tried to do:
estIID50=rep(NA,1000)
for (i in 1:1000)
estIID50[i]=pargev(lmom.ub(IID50[1:50,i]))
#warning
2009 May 04
3
GEV para datos no estacionarios
Hola a todos,
Soy nuevo en R y estoy intentando modelizar una serie de datos no
estacionarios usand la distribucion Generalizada de Valores Extremos GEV.
¿Podriais indicarme como se modeliza una tendencia polinómica (cuadrática,
por ejemplo) en alguno de los 3 parámetros (situación, escala o forma)? He
encontrado documentación a cerca de modelización linear o exponencial, pero
no acabo de
2012 Jun 15
1
Replication of linear model/autoregressive model
Hi,
I would like to make a replication of 10 of a linear, first order
Autoregressive function, with respect to the replication of its innovation,
e. for example:
#where e is a random variables of innovation (from GEV distribution-that
explains the rgev)
#by using the arima.sim model from TSA package, I try to produce Y
replicates, with respect to every replicates of e,
#means for e[,1], I want
2008 Dec 16
2
Parameter Estimation - Generalized Extreme Value Distribution
Dear R helpers,
How do you estimate the (Location, Scale, Shape) parameters of Generalized Extreme Value distribution using R?
I have tried VGAM but just not able to write the R script.
Please advise.
With regards
Maithili
2012 Jul 22
1
Adding gamma and 3-parameter log normal distributions to L-moments ratio diagram lmrd()
How to adapt this piece of code but for: - gamma distribution - 3 parameter
log normal
More specifically, where can I find the specification of the parameter
(lmom) for pelgam() and pelln3()?
Lmom package info just gives: pelgam(lmom), lelln3(lmom), where lmom is a
numeric vector containing the L-moments of the distribution or of a data
sample.
# Draw an L-moment ratio diagram and add a line for
2011 Oct 21
2
How to use gev.fit (package ismev) under box constraints?
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2006 Oct 27
0
VGAM package released on CRAN
Dear useRs,
upon request, the VGAM package (currently version 0.7-1) has been
officially released on CRAN (the package has been at my website
http://www.stat.auckland.ac.nz/~yee/VGAM for a number of years now).
VGAM implements a general framework for several classes of
regression models using iteratively reweighted least squares
(IRLS). The key ideas are Fisher scoring, generalized linear
and
2011 Jun 30
2
Saving fExtremes estimates and k-block return level with confidence intervals.
I am estimating a large model by groups. How do you save the results and?returns
the associated quantiles?
For this example I need a data frame
n?? ?xi??????? mu????????beta
1?? 0.1033614? 2.5389580 0.9092611
2? ?0.3401922? 0.5192882 1.5290615
3?? 0.5130798? 0.5668308 1.2105666
I also want to apply gevrlevelPlot() for each "n" or group.
?
#Example
n <- c(1, 1, 1, 1, 1, 1, 2, 2, 2,
2004 Feb 25
2
PWM Help
I saw a Help e-mail related to MLE. Does R have a probability weighted method (PWM) estimator function? I can't seem to find anything on PWM, unless my eyes are playing trick on me.
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2009 Mar 13
0
Fitting GUMBEL Distribution - CDF function ISSUE
Dear R helpers
I am trying to fit the Gumbel distribution to a data. I am using lmom package. I am getting problem in Cumulative Distribution Function of Gumbel distribution as I am getting it as a series of 0's and 1's thereby affecting the P P Plot. My R code is as follows.
library(quantreg)
library(RODBC)
library(MASS)
library(actuar)
library(lmom)
x <-
2009 May 03
0
QUADRATIC TREND FOR LINK FUNCTIONS ON NON-STATIONARY GEV
Hi All,
I am a newcomer to R. Could anyone explain me how to define link functions
for either mu/sigma to allow for quadratic trends in the same, when fitting
non-stationary GEV distributions?
Thanks
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