To cite the gcf package or the GCF method in publications, please use: Song, Y. (2026). Generalized covariate field (GCF): spatial-pattern and neighbourhood-distribution feature expansion improves geospatial prediction. International Journal of Geographical Information Science, 40, 1-29. https://doi.org/10.1080/13658816.2026.2729719 A BibTeX entry for LaTeX users is @Article{, title = {Generalized covariate field (GCF): spatial-pattern and neighbourhood-distribution feature expansion improves geospatial prediction}, author = {Yongze Song}, journal = {International Journal of Geographical Information Science}, year = {2026}, volume = {40}, pages = {1--29}, doi = {10.1080/13658816.2026.2729719}, }