| bio_grid | South-western Australia plant species richness grid (GCF paper case study) |
| gcf_blocks | Spatial blocks for stability selection and spatial cross-validation |
| gcf_field | Generate generalized covariate field (GCF) variables |
| gcf_psi | Spatial-pattern features (psi) of spatial variables |
| gcf_reduce | Reduce psi and Zx layers to the GCF candidate variables |
| gcf_select | Select stable GCF variables |
| gcf_zx | Neighbourhood-distribution features (Zx) of spatial variables |
| sim_grid | Simulated spatial grid (GCF paper simulation) |
| summary.gcf_field | Summarise a generalized covariate field |