On Wed, Oct 29, 2003 at 06:54:05PM +0300, Timur Elzhov wrote: > Yes, in help(nls) is pointed, that > Arguments: > data: an optional data frame in which to evaluate the variables in > `formula' > > But, I'd like 'nls' to see my expression 'expr'... :-/ How can I do that? Sorry, I was mistaken :) The bug was in the another my function. -- WBR