Understanding the Levenberg-Marquardt Nonlinear Least-Squares Algorithm and Error Singular Gradient in R's nls() Function: A Guide to Resolving Singular Gradient Errors with Logarithmic Transformation and Linear Modeling.

Fitting a Sine Wave Model on POSIXt Data and Plotting Using Ggplot2: A Step-by-Step Guide

Fitting Logarithmic Curves using R's nls Package: A Guide to Resolving Common Issues and Achieving Success