Re: [R] nls function error

2013-10-27 Thread Rolf Turner
On 10/28/13 00:10, Hansol Yu wrote: data(Boston, package='MASS') y <- Boston$nox x <- Boston$dis nls(y~ A + B * exp(C * x), start=list(A=1, B=1, C=1)) Error in nls(y ~ A + B * exp(C * x), start = list(A = 1, B = 1, C = 1), : step factor 0.000488281 reduced below 'minFactor' of 0.000976562 I

[R] nls function error

2013-10-27 Thread Hansol Yu
data(Boston, package='MASS') y <- Boston$nox x <- Boston$dis nls(y~ A + B * exp(C * x), start=list(A=1, B=1, C=1)) Error in nls(y ~ A + B * exp(C * x), start = list(A = 1, B = 1, C = 1), : step factor 0.000488281 reduced below 'minFactor' of 0.000976562 I don't know how to fix this error. I th

Re: [R] nls function

2012-04-11 Thread peter dalgaard
: 83 >> Date: Tue, 10 Apr 2012 13:03:58 -0700 (PDT) >> From: nerak13 >> To: r-help@r-project.org >> Subject: [R] nls function >> Message-ID: <1334088238773-4546791.p...@n4.nabble.com> >> Content-Type: text/plain; charset=us-ascii >> >> Hi, >>

Re: [R] nls function

2012-04-11 Thread John C Nash
ion doesn't seem to be defined. I left it out to get an answer. John Nash On 04/11/2012 06:00 AM, r-help-requ...@r-project.org wrote: > Message: 83 > Date: Tue, 10 Apr 2012 13:03:58 -0700 (PDT) > From: nerak13 > To: r-help@r-project.org > Subject: [R] nls function >

Re: [R] nls function

2012-04-10 Thread peter dalgaard
On Apr 10, 2012, at 22:03 , nerak13 wrote: > Hi, > > I've got the following data: > > x<-c(1,3,5,7) > y<-c(37.98,11.68,3.65,3.93) > penetrationks28<-dataframe(x=x,y=y) > > now I need to fit a non linear function so I did: > > fit <- nls(y ~ I(a+b*exp(1)^(-c * x)), data = penetrationks28, star

Re: [R] nls function

2012-04-10 Thread David Winsemius
On Apr 10, 2012, at 4:03 PM, nerak13 wrote: Hi, I've got the following data: x<-c(1,3,5,7) y<-c(37.98,11.68,3.65,3.93) penetrationks28<-dataframe(x=x,y=y) now I need to fit a non linear function so I did: fit <- nls(y ~ I(a+b*exp(1)^(-c * x)), data = penetrationks28, start = list(a=0,b = 1,

[R] nls function

2012-04-10 Thread nerak13
Hi, I've got the following data: x<-c(1,3,5,7) y<-c(37.98,11.68,3.65,3.93) penetrationks28<-dataframe(x=x,y=y) now I need to fit a non linear function so I did: fit <- nls(y ~ I(a+b*exp(1)^(-c * x)), data = penetrationks28, start = list(a=0,b = 1,c=1), trace = T) The error message I get is: Er

[R] nls function

2010-03-24 Thread Trafim Vanishek
Hi everybody, would like to ask if there is any possibility to get SOME BEST result for nls fitting if the function itself doesn't produce it. I already increased number of iterations, reduced minfactor and still it doesn't give me the solution. Thanks a lot. [[alternative HTML version d