hello all,

i'm trying to understand how to use the non linear least squares function in R, what i'm stuck on is how i can guess the start values that i need to provide, i know for some it's easy, for y=ax+b, i can just use a=1,b=1. But how can i find the start values of "any" nls function? i've done some googling, i have read that if you log the base formula you can use the slope and intercept as start values, but how exactly do i do this? could someone give me an example formula that could give me the starting values of a nls fuction?

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