Is there a non animation version of newton.method
(http://bm2.genes.nig.ac.jp/RGM2/R_current/library/animation/man/newton.method.html)
for finding roots of a function? It should find the roots without showing it
on the GUI.
thanks,
Sam
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saminny wrote:
Is there a non animation version of newton.method
(http://bm2.genes.nig.ac.jp/RGM2/R_current/library/animation/man/newton.method.html)
for finding roots of a function? It should find the roots without showing
it on the GUI.
Have a look at package nleqslv
/Berend
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Roslina Zakaria wrote:
newton.inputsingle - function(pars,n)
{ runi - runif(974, min=0, max=1)
lendt - length(runi)
## Parameter to estimate
z - vector(length=lendt, mode= numeric)
z - pars[1]
## Constant value
alp - 2.0165 ; rho - 0.868;
c
Hi r-users,
I hope somebody can help me with this code.
I would like to solve for z values using newton iteration method. I 'm not
sure which part of the code is wrong since I'm not very good at programming but
would like to learn. There seem to be some output but what I expected is a
your problem is because f is a vector of the same length as runi
as a result, the thing you're trying to assign to z[i+1] is also a vector of
that length
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Hi r-users,
I would like to solve for z values using newton iteration method. I 'm not
sure which part of the code is wrong since I'm not very good at programming but
would like to learn. There seem to be some output but what I expected is a
vector of z values. Thank you so much for any
Roslina Zakaria wrote:
Hi Ravi,
I did ask you some question regarding newton method sometime ago.. Now I
have fixed the problem and I also wrote 2 looping code (ff1 and ff2) to
evaluate the modified Bessel function of the first kind and call them in
the newton code. But I dont't
Hi Rolf,
I would like to extend the problem that I asked you before regarding the newton
method using 4 functions with 4 parameters. My functions involve the modified
bessel function of the first kind which I can type them without any problem.
The big problem is the Jacobian matrix.
I use
Subject: [R] Newton method again
To: Rolf Turner r.tur...@auckland.ac.nz, R help forum R-help@r-project.org
Hi Rolf,
I would like to extend the problem that I asked you before regarding
the newton method using 4 functions with 4 parameters. My functions
involve the modified bessel
On 8/04/2009, at 2:31 PM, Roslina Zakaria wrote:
Hi Rolf,
I would like to extend the problem that I asked you before
regarding the newton method using 4 functions with 4 parameters.
My functions involve the modified bessel function of the first kind
which I can type them without any
I'm not sure what you meant by a topic on newton's method
(algorithm? demo?), but the demonstration in the package 'animation'
might help:
install.packages('animation')
par(pch = 20)
ani.options(nmax = 50)
newton.method(function(x) 5 * x^3 - 7 * x^2 - 40 *
x + 100, 7.15, c(-6.2, 7.1))
, March 23, 2009 4:35 AM
To: Roslina Zakaria
Cc: r-help@r-project.org
Subject: Re: [R] newton method
Take a look at the functionsnlm(), optim() in the stats package and
maxNR() in the maxLik package.
On Mar 22, 2009, at 11:15 PM, Roslina Zakaria wrote:
Does R has a topic on newton's
Hi R-users,
Does R has a topic on newton's method?
Thank you for the info.
__
R-help@r-project.org mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide
Take a look at the functionsnlm(), optim() in the stats package and
maxNR() in the maxLik package.
On Mar 22, 2009, at 11:15 PM, Roslina Zakaria wrote:
Does R has a topic on newton's method?
_
Professor Michael Kubovy
University of Virginia
Department of
Thanks Chales for pointing out the errors.
I fixed an errorr and R accepted my rootFinding code.
But the problem right now is that my code will work only if the intialX
value is close enough to the solution.
Otherwise, R says there is missing true/false value in the codition test of
while loop.
On Sat, 27 Oct 2007, kevinchang wrote:
Thanks Chales for pointing out the errors.
I fixed an errorr and R accepted my rootFinding code.
But the problem right now is that my code will work only if the intialX
value is close enough to the solution.
Otherwise, R says there is missing
Hi all,
I am coding for finding the root of f(x)= phi(x) -alpha where phi(x) is the
cumulative density function and alpha is constant . The problem right now is
I can't get the initialX representing the root out of the while loop when
ending , it seems to me it disappear when the loop ends
On Fri, 26 Oct 2007, Charles C. Berry wrote:
On Fri, 26 Oct 2007, kevinchang wrote:
Hi all,
I am coding for finding the root of f(x)= phi(x) -alpha where phi(x) is the
cumulative density function and alpha is constant . The problem right now is
I can't get the initialX representing the
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