FlexParamCurve: R package for flexible fitting of nonlinear parametric curves

Summary 1. Nonlinear, parametric curve‐fitting provides a framework for understanding diverse ecological and evolutionary trends (e.g. growth patterns and seasonal cycles). Currently, parametric curve‐fitting requires a priori assumptions of curve trajectories, restricting their use for exploratory analyses. Furthermore, use of analytical techniques [nonlinear least‐squares (NLS) and nonlinear mixed‐effects models] for complex parametric curves...