search for: mgf_gammasum

Displaying 2 results from an estimated 2 matches for "mgf_gammasum".

2010 Nov 21
1
solve nonlinear equation using BBsolve
Hi r-users, I would like to solve system of nonlinear equation using BBsolve function and below is my code.  I have 4 parameters and I have 4 eqns. mgf_gammasum <- function(p) { t  <- rep(NA, length(p)) mn <- 142.36 vr <- 9335.69 sk <- 0.8139635 kur <- 3.252591 rh  <- 0.896 # cumulants k1 <- p[1]*(p[2]+p[3]) k2 <- p[1]*(2*p[2]*p[3]*p[4] +p[2]^2+p[3]^2) k3 <- 2*p[1]*(p[2]+p[3])*(p[2]^2 + p[3]^2 - p[2]*p[3] + 3*p[2]*p[3]*p[4]) k...
2010 Nov 24
0
4. Rexcel (Luis Felipe Parra)-how to run a code from excel
...close > to the value that I'm expected and it gives me the following message: I > tried a few combination. My question is why it said "Unsuccessful > convergence" but still give some answers? Can I use the answers? > > >> p0 <- c(2.5,25,25,0.8) >> mgf_gammasum(p0) > [1] -17.3600000 -3410.6900000 0.3508769 -1.1028287 >> BBsolve(par = p0, fn = mgf_gammasum)[[1]] > Unsuccessful convergence. > [1] 2.066909 44.068739 24.809270 0.972542 >> source(.trPaths[5], echo=TRUE, max.deparse.length=10000) >> p0 <- c(1.7,36,50,0...