Hi:

To amplify on David's point, the help page of nlsBoot (package nlstools)
states that the function returns the following:

nlsBoot returns a list of three objects: coefboot  contains the bootstrap
parameter estimates  bootCI  contains the bootstrap medians and the
bootstrap 95% confidence intervals  rse  is the vector of bootstrap residual
errors

On Thu, Sep 30, 2010 at 2:00 PM, David Winsemius <dwinsemius@comcast.net>wrote:

>
>
> Michael Larkin wrote:
> >
> > Thanks to the help of people from this forum I was able to bootstrap my
> > data
> > and then apply a model to it.  Thanks for all your help.
> >
> > Everything worked out well, but I am having a difficult time getting the
> > new
> > parameter values.  I bootstrapped the data 300 times and I want to get
> the
> > 300 sets of parameter estimates and plot them in Excel.
>

Based the above snippet of nlsBoot's help page, see component coefboot of
your object boo below - i.e., boo$coefboot or boo[[1]].

I'll let the comment about plotting these in Excel pass...

HTH,
Dennis

>
> > Here is my code:
> >
> > par<-list(Linf=700, K=0.3, to=-0.1)                            #starting
> > values for parameter estimates
> >
> > vb<-nls(length~Linf*(1-exp(-K*(age-to))), start=par, data=small)     #von
> > Bertalanffy growth mode
> >
> > boo<- nlsBoot(vb, niter=300)                                     #This
> > bootstraps my data 300 times and applies the growth model
> >
> >
> >
> > I can get R to plot the 300 parameter estimates if I do the following
> > function:
> >
> > plot(boo)
> >
> >
> >
> > However, I have tried different print function options but have not had
> > any
> > luck getting the 300 parameter estimates.  Any advice would be greatly
> > appreciated.
> >
>
> It's probably as simple as looking at:
>
> vb$t   #  but this is untested in the absence of a reproducible example.
>
> --
> David.
>
> --
> View this message in context:
> http://r.789695.n4.nabble.com/getting-the-output-after-bootstraping-tp2721024p2758846.html
> Sent from the R help mailing list archive at Nabble.com.
>
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