[Rd] ppr crash for optlevel=0

[Liaw, Andy]

Please give a _reproducible_ example on the current version of R (2.0.0).
It works fine for me using the example in ?ppr:

>      rock.ppr <- ppr(log(perm) ~ area1 + peri1 + shape,
+                      data = rock, nterms = 2, max.terms = 5, optlevel=0)
> rock.ppr
>      rock.ppr <- ppr(log(perm) ~ area1 + peri1 + shape,
sm.method="gcvspline",
+                      data = rock, nterms = 2, max.terms = 5, optlevel=0)

Neither of the above crashes, nor gave any error.

WinXP Pro with R-2.0.0.

Andy

> From: jmoreira at fe.up.pt
> 
> Just ro report an error:
> I am using R 1.9.1, OS: XP professional
> I am testing ppr for different parameters. It is everything 
> ok except when 
> optlevel=0. That happen for the methods supsmu and gcvspline, 
> the ones I have 
> tested. For optlevel = 1:3 it works ok.
> 
> João Moreira
> 
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