similar to: How to solve systems of nonlinear equations in R?

Hi all, I would like to ask that is there any function in R which can solve nonlinear system equations with several variables. Thats mean some functions similar to the 'fsolve' or 'fzero' in matlab. Thanks you Jerry _________________________________________________________________ Get 10Mb extra storage for MSN Hotmail. Subscribe Now!

Hello, I have a problem finding a root of a function, which I define like this: tuki <- function(u, x, a, lambda){ if((lambda%%1>0) & u<0) {u<-(u+0i)} f <- Re(x-(a*(u)^lambda-(1-(u))^lambda)/lambda) f } What I want to do is to find the root, but without specifying the interval within which to search for it. I can do it easily in MATLAB with fsolve() or fzero() functions. I

I would like to solve the following function in R: G <- function(k) (2*(1 - k)*(1 + 2*k)^.5)/(1+3*k) I want to be able to find "k" for a given "G" Thanks! Francois Aucoin [[alternative HTML version deleted]]

https://bugzilla.mindrot.org/show_bug.cgi?id=3629 Bug ID: 3629 Summary: Building with Clang-17 fails due to -fzero-call-used-regs Product: Portable OpenSSH Version: 9.5p1 Hardware: amd64 OS: Mac OS X Status: NEW Severity: critical Priority: P5 Component: Build system

Hello, I have a system of quadratic equations (results of a Hamiltonian optimization) which I need to find the roots for. Is there a package and/or function which will find the roots for a quadratic system? Note that I am not opimizing, but rather solving the first order conditions which come from a Hamiltonian. I am basically looking for something in R that will do the same thing as fsolve in

Hi, I'm having trouble converting code from MATLAB to R; I want to find the equivalence to MATLAB's function 'fsolve'. I've tried 'nlm', on the squared argument, in R but i did not get the same results. Thankful if helped. Best regards, Martin Englund ------------------------------------------------------------------------------ This e-mail and any attachment may

I want to include a vignette with a package I wrote. I did follow the "Writting R extentions" document step by step, but went I run "Rcmd build", an error occurs. It goes like this: " * creating vignettes ... ERROR . . . . :7: Emergency stop L7L ==> Fatal error occurred, no output PDF file produced!texify: pdflatex failed for some reason <see log file>.

Hey, The following is a function I wrote which generates random variables from a Kappa (2-parameter) distribution. rkappa <- function(n,beta,alpha){ if(alpha <= 0) stop("alpha must be greater than zero!") if(beta <= 0) stop("beta must be greater than zero!") Vec <- beta*exp((1/alpha)*(log(-(alpha/(-1 + exp(alpha*log(runif(n,0,1))))))+

https://bugzilla.mindrot.org/show_bug.cgi?id=3673 Bug ID: 3673 Summary: -fzero-call-used-regs=used detection fails on Linux m68k with GCC 13 Product: Portable OpenSSH Version: 9.7p1 Hardware: 68k URL: https://bugs.debian.org/1067243 OS: Linux Status: NEW Severity: normal

Dear R-programmers, I am trying out certain methods in R, and the statistics require me to calculate n-(sample size) dimensional equations. They are not really very hard to solve - my home-brew implentation of Newton-Raphson in R succeeds most of time with simulated data. (Note that I am assured of a unique solution by theory). Problem comes in with real data, for which I should really implement

Dear r-users, I would like to convert my Matlab code to R-code, however it dies not work as expected.  Hope somebody can help me to match Matlab and r codes. R code: rr <- function(r,cxn) { tol <- 1E-4; for(i in 1:n) { t1 <- (1+(i-1)*r)*log((1+(i-1)*r)) t2 <- (i-1)*(1-r)*log(1-r) rri <- ((t1+t2)/i*log(i))-cxn rr <- rri > tol } round(rr,4) } rr1 <- rr(0.5,0.0242) ; rr1

All functions referenced via __PV_IS_CALLEE_SAVE() need to be assembler functions, as those functions calls are hidden from gcc. In case the kernel is compiled with "-fzero-call-used-regs" the compiler will clobber caller-saved registers at the end of C functions, which will result in unexpectedly zeroed registers at the call site of the related paravirt functions. Replace the C

Dear all, I just know how to solve an eaquation by using optim() or nlm(). But, now, I have three nonlinear equations, how could we use optim() or nlm() to solve  a system of nonlinear equations in R?  Thank you so much. Sincerely, Joe ___________________________________________________ 您的生活即時通 － 溝通、娛樂、生活、工作一次搞定！ [[alternative HTML version deleted]]

https://bugzilla.mindrot.org/show_bug.cgi?id=3682 Bug ID: 3682 Summary: incorrectly thinks that -fzero-call-used-regs should work Product: Portable OpenSSH Version: 9.7p1 Hardware: ARM OS: Linux Status: NEW Severity: normal Priority: P5 Component: Build system

Dear Wu Gong and Peter Ehlers, thank you very much for your help debugging my script. Now I have a general following up question: Is there a straightforward way to rearrange the following dataset so that all first letters of each column will be combined in one column, all the second letters in a second column, all the third ones in a third column and so on, resulting in 7 columns, i.e. for

https://bugzilla.mindrot.org/show_bug.cgi?id=3645 Bug ID: 3645 Summary: -fzero-call-used-regs=used detection seems to fail on Linux ppc64el Product: Portable OpenSSH Version: 9.6p1 Hardware: PPC64 OS: Linux Status: NEW Severity: normal Priority: P5 Component: Build

Hi there, I have following equations to be solved for a and b: a/(a+b) = x1 ab/((a+b)^2 (a+b+1)) = x2 Is there any direct function available to solve them without disentangling them manually? Thanks for your help.

respectd sir,  i am working on regional frequency analysis of flood flow data and want to use packages lmomRFA, lmom, imomco,etc andby using these i want to find RMSE , errorbounds and absolute biase but could not make it clear to use, please help regards atta muhammad asif assistant professor atta_ycc@yahoo.com [[alternative HTML version deleted]]

Greetings, \Sexpr{} has worked on MikTex with earlier versions of R, I can not seem to get it to work with R-2.4.0. I run Sweave with MikTex using the following statement in Run under Accessories. latex -include-directory="C:\Program Files\R\R-2.4.0\share\texmf" "C:\Documents and Settings\Suzette\Desktop\MyFile\MyProgram.tex" Any advice would be much appreciated, Suzette

Hi, OpenSSH 9.7p1 is almost ready for release, so we would appreciate testing on as many platforms and systems as possible. This is a bugfix release. Snapshot releases for portable OpenSSH are available from http://www.mindrot.org/openssh_snap/ The OpenBSD version is available in CVS HEAD: http://www.openbsd.org/anoncvs.html Portable OpenSSH is also available via git using the instructions at