*This is the central issue to track the implementation of the `pygmt.grdfill` method.* - GMT doc: https://docs.generic-mapping-tools.org/6.5/grdfill.html - PyGMT doc: https://www.pygmt.org/dev/api/generated/pygmt.grdfill.html - GMT.jl doc: https://www.generic-mapping-tools.org/GMTjl_doc/documentation/modules/grdfill/ ## GMT options *Checked: Implemented; Unchecked: To be implemented/discussed; Strikethrough: Won't implement.* - [x] `<ingrid>` #1276 - [x] `-Ac|g|n|s[<arg>]`: `constantfill`/`gridfill`/`neighborfill`/`splinefill` #3855 - [ ] `-L[p]` - [x] `-L`: aliased to `inquire` #3880 - [ ] `-Lp`: not implemented - [x] `-G<outgrid>` #1276 - [x] `-N<value>`: `hole` #3852 - [x] `-R`: `region` - [x] `-V`: `verbose` - [x] `-f`: `coltypes` #3869 - [ ] ~~`--PAR=value`: Use `pygmt.config`~~