| envi-package | The envi Package: Environmental Interpolation using Spatial Kernel Density Estimation | 
| envi | The envi Package: Environmental Interpolation using Spatial Kernel Density Estimation | 
| lrren | Ecological niche model using a log relative risk surface | 
| perlrren | Spatially perturb an ecological niche model that uses a log relative risk surface | 
| plot_cv | Visualizations for the prediction diagnostics of an estimated ecological niche | 
| plot_obs | Visualizations for an estimated ecological niche in covariate space | 
| plot_perturb | Visualizations for a simulated ecological niche after iteratively perturbing the observation coordinates | 
| plot_predict | Visualizations for a predicted ecological niche in geographic space |