R help - Oct 2004 - Need help finding max from 3d locfit output

Hi I am running the following locfit function:
> fit <- locfit( log(base$Value) ~ base$lBrkOut +  base$lExit , alpha=0.9)
> plot(fit,type="persp" )

The above two steps create a nice 3d plot. I would like to find the xy
coordinates where the maximum z occurs. 

Does any one know of function to call that will display the xy coordinates
where max(z) occurs?

Thanks
Lawrence

You can just do something like base[which.max(predict(fit)),].

One suggestion:  Use something like locfit(log(Value) ~ lBrkOut + lExit,
data=base, ...).  It's much safer that way.

HTH,
Andy
> From: lawrence Perepolkin
> 
> Hi I am running the following locfit function:
> > fit <- locfit( log(base$Value) ~ base$lBrkOut +  base$lExit 
> , alpha=0.9)
> > plot(fit,type="persp" )
> 
> 
> The above two steps create a nice 3d plot. I would like to find the xy
> coordinates where the maximum z occurs. 
> 
> Does any one know of function to call that will display the 
> xy coordinates
> where max(z) occurs?
> 
> Thanks
> Lawrence
> 
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