[R] Error in nls Error in if(any(start < low || start > upp)) {: missing value when TRUE/FALSE needed

Joerg van den Hoff j.van_den_hoff at fzd.de
Thu Nov 5 10:57:39 CET 2009

On Nov 04 2009 (Wed, 22:48), R_help Help wrote:
> Hi,
> I got this error every time when I put upper and lower bound on my
> parameters in nls. I'm not quite sure what this error is about. I also
> wanted to find the content of nls_port_fit. But typing this directly
> into R doesn't seem to give any result out.

some functions are 'hidden' in the package namespace. you can use


to see the source code of such functions.



to execute such functions from the R prompt.

> I also tried to see the content of  If anybody could shed some light
> I'd greatly appreciate. Thank you.
> rc
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