Hi R-users,
Could you give me some advice in
solving the problem of such error message from gnls and nls?
## begin error message
"Problem in gnls(y1 ~ glogit4(b, c, m, t, x), data.frame(x..: Step halving
factor reduced below minimum in NLS step "
##and
"Problem in nls(y ~ 1/(1 + exp((xmid - x)/scal)), data = x..: step factor
reduced below minimum "?
Thank you in advance.
Hanna
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