similar to: function manipulation for integration

Displaying 20 results from an estimated 500 matches similar to: "function manipulation for integration"

2011 Jan 27
0
adaptIntegral takes too much time
Hello Dear List members, as you can see (and guess) from the code below adaptIntegrate(f,lowerLimit=c(-1,-1),upperLimit=c(.9999,.9999)) $integral [1] 9.997e-09 $error [1] 1.665168e-16 $functionEvaluations [1] 17 $returnCode [1] 0 > adaptIntegrate(f,lowerLimit=c(-1,-1),upperLimit=c(1,1)) the last command runs for 45 mins now. -this one takes only less than sec:
2012 May 23
0
Error from using adaptIntegrate within a function that is then integrated
I want to measure the error in the estimation of a 2 dimensional density function that is calculated using an integral but run into problems trying to integrate with adaptIntegrate because the integrand also calls the function adaptIntegrate. In particular I want \int \hat{f}(x,y) - f(x,y) dx dy where \hat{f}(x,y) = \int K(a,b, x, y) da db and in this simulation study I know what the true value
2012 Mar 25
1
cubature
Hi, I am using adaptIntegrate from Cubature to do numerical integration on a double integral with a 1 x 2 vector x. Say the function is something simple to start like f(x)=x1*x2 and I wish to integrate x1 over (0,365-x2) and x2 over (0,365) f <- function(x) {(x[2])*(x[1])} # "x" is vector int1<-adaptIntegrate(f, lowerLimit = c(0, 0), upperLimit = c(365-x[2], 365)) I recieve
2013 Jan 08
2
Integration in R
Hi R-users. I'm having difficulty with an integration in R via the package "cubature". I'm putting it with a simple example here. I wish to integrate a function like: f(x1,x2)=2/3*(x1+x2) in the interval 0<x1<x2<7. To be sure I tried it by hand and got 114.33, but the following R code is giving me 102.6667.
2012 Oct 02
3
Integration in R
Dear R-users, I am facing problem with integrating in R a likelihood function which is a function of four parameters. It's giving me the result at the end but taking more than half an hour to run. I'm wondering is there any other efficient way deal with. The following is my code. I am ready to provide any other description of my function if you need to move forward.
2007 Apr 16
0
4 commits - libswfdec/swfdec_shape.c libswfdec/swfdec_stroke.c test/dump.c
libswfdec/swfdec_shape.c | 19 +++++++++++++++---- libswfdec/swfdec_stroke.c | 6 +++--- test/dump.c | 2 +- 3 files changed, 19 insertions(+), 8 deletions(-) New commits: diff-tree 04113e5a83386f59140f248a817f7bf8d6728ddb (from f307c3b4ba316d4d1880e1aeba079878230e3db8) Author: Benjamin Otte <otte@gnome.org> Date: Mon Apr 16 11:42:21 2007 +0200 add FIXME diff
2010 Sep 21
3
bivariate vector numerical integration with infinite range
Dear list, I'm seeking some advice regarding a particular numerical integration I wish to perform. The integrand f takes two real arguments x and y and returns a vector of constant length N. The range of integration is [0, infty) for x and [a,b] (finite) for y. Since the integrand has values in R^N I did not find a built-in function to perform numerical quadrature, so I wrote my own after
2011 Nov 10
2
performance of adaptIntegrate vs. integrate
Dear list, [cross-posting from Stack Overflow where this question has remained unanswered for two weeks] I'd like to perform a numerical integration in one dimension, I = int_a^b f(x) dx where the integrand f: x in IR -> f(x) in IR^p is vector-valued. integrate() only allows scalar integrands, thus I would need to call it many (p=200 typically) times, which sounds suboptimal. The
2013 Mar 21
1
"adaptIntegrate" function
Hi all, it seems that there is problem with function "adaptIntegrate", when the integration limits is infinity. Please see the code below. The second integration does not seem to work. Can anyone familiar with this give some help? Thank you with much. Hanna library(mnormt) library(cubature) ff <- function(x, rho){ mu <- rep(0,3) Sigma
2012 May 21
0
Erratic error with adaptIntegrate in cubature package
Hi everyone, I have been using adaptIntegrate from the cubature package for a multidimensional integral that has infinite variance (and so not appropriate for Monte Carlo techniques). Most of the time it works but sometimes (though not always) when I slightly increase the accuracy I want, or increase the bounds of integration I get the following error: REAL() can only be applied to a
2020 May 20
0
About Libvirt Setmem&dommemstat Function
I have sent a similar email about this problem. But I did not describe carefully, so I would like to explain it in more details. I am using 'virsh setmem' to ajust vm memory online. However, I don't know what is the lowerlimit that can be set to. And I try to use 'virsh dommemstat' to get 'unused' memory so that I can calculate the lowerlimit memory with this value, but
2008 Jun 03
0
ALTQ and cpufreq(4)
Hello, I've met some quite strange reboots recently on my home gateway. I'm trying to reduce its power consumption, so I've loaded the cpufreq(4) driver, and enabled powerd. After this the box started to reboot randomly all over the place. I started to think what can cause the trouble, removing the cpufreq(4) support would be too trivial, so I've removed the ALTQ references from
2018 Feb 16
2
[FORGED] Re: SE for all levels (including reference) of a factor atfer a GLM
On 16/02/18 15:28, Bert Gunter wrote: > This is really a statistical issue. What do you think the Intercept term > represents? See ?contrasts. > > Cheers, > Bert > > > > Bert Gunter > > "The trouble with having an open mind is that people keep coming along and > sticking things into it." > -- Opus (aka Berkeley Breathed in his "Bloom
2011 May 03
2
adaptIntegrate - how to pass additional parameters to the integrand
Hello, I am trying to use adaptIntegrate function but I need to pass on a few additional parameters to the integrand. However, this function seems not to have the flexibility of passing on such additional parameters. Am I missing something or this is a known limitation. Is there a good alternative to such restrictions, if there at all are? Many thanks for your time. HC -- View this message in
2011 Dec 02
1
R2Cuba package, failed with message ‘Dimension out of range’
Hi All, I get the message failed with message ‘Dimension out of range’ when using cuhre in package R2Cuba. Does anyone know what this mean? Or would I need to email the package author? The funny thing is it does give a result and comparing it to "adaptIntegrate" in package cubature, the two numbers are very close. Thanks, Sachin [[alternative HTML version deleted]]
2007 Oct 11
0
12 commits - configure.ac doc/Makefile.am libswfdec/swfdec_as_frame.c libswfdec/swfdec_audio.c libswfdec/swfdec_audio_event.c libswfdec/swfdec_audio_event.h libswfdec/swfdec_shape_parser.c libswfdec/swfdec_sound.c test/sound
configure.ac | 2 - doc/Makefile.am | 2 - libswfdec/swfdec_as_frame.c | 8 ++-- libswfdec/swfdec_audio.c | 1 libswfdec/swfdec_audio_event.c | 24 +++++-------- libswfdec/swfdec_audio_event.h | 3 + libswfdec/swfdec_shape_parser.c | 8 ++-- libswfdec/swfdec_sound.c | 1 test/sound/adpcm-2-2.swf.1.0.raw |binary
2020 May 19
0
About Libvirt Setmem&dommemstat Function
I am using 'virsh setmem' to adjust the vm memory. But I don't know what is the lowerlimit memory that can be adjusted to, so I try to update the version of libvirt&amp;qemu to get caches of the vm memory so that I can calculate the lowerlimit. And when I upgrade libvirt to 4.10.0, qemu upgrade to 4.1.0, still, I cannot get 'stat-disk-caches'.&nbsp; How can I solve it ?
2002 Nov 24
1
How to compile samba-2.2.x on HP/UX 11.00
Hi, Here's my problem: Samba-2.2.x (even 2.2.7) compiled right out of the box on HP/UX 11.00 gives some errors in the log file: Nov 23 16:17:32 pandora smbd[6744]: [2002/11/23 16:17:32, 0] locking/posix.c:posix_fcntl_lock(661) Nov 23 16:17:32 pandora smbd[6744]: posix_fcntl_lock: WARNING: lock request at offset 0, length 9223372036854779000 returned Nov 23 16:17:32 pandora smbd[6744]:
2013 Mar 05
2
Error message
Dear all, I got an error message when running the following code. Can anyone give any suggestions on fixing this type of error? Thank you very much in advance. Hanna > integrand <- function(x, rho, a, b, z){ + x1 <- x[1] + x2 <- x[2] + Sigma <- matrix(c(1, rho, rho, 1), 2,2) + mu <- rep(0,2) + f <-
2006 Jul 17
0
(no subject)
on x86_64, when guest has more than 2G memory, "startx" will cause qemu dm die, this patch fixes it. Signed-off-by: Xin Li <xin.b.li@intel.com> diff -r ecb8ff1fcf1f tools/ioemu/hw/vga.c --- a/tools/ioemu/hw/vga.c Fri Jul 14 18:53:27 2006 +0100 +++ b/tools/ioemu/hw/vga.c Mon Jul 17 22:35:54 2006 +0800 @@ -1392,7 +1392,8 @@ static void vga_draw_graphic(VGAState *s static void