r-cran-minpack.lm - 1.2-4-1 main

The nls.lm function provides an R interface to lmder and lmdif from the
MINPACK library, for solving nonlinear least-squares problems by a
modification of the Levenberg-Marquardt algorithm, with support for
lower and upper parameter bounds. The implementation can be used via nls-
like calls using the nlsLM function.