get_field_grid: Make polygon grid of field
In smmueller/plotdesignr: Design Agronomic Field Experiments with more Power

Make polygon grid of field

1	get_field_grid(field, alpha, harvest_width, passes_to_clip, cellsize_scaler)

`field`	sf; an sf object of point geometries.
`alpha`	numeric; parameter that controls the level of simplication in the field boundary. Larger numbers are more simple and follow the data points less closely. This parameter is passed to `alphahull::ashape`.
`harvest_width`	numeric; width of harvest header, in meters.
`passes_to_clip`	integer; the number of harvest passes to clip when creating field buffer.
`cellsize_scaler`	numeric; controls the size of the grid cells. The value of `combind_width * cellsize_scaler` is passed to `sf::st_make_grid`.

An sfc_POLYGON object that contains a hexagonal grid of cell size harvest_width * cellsize_scaler, clipped to the size of the field buffer. The field buffer is the detected field boundardy, with its simplifiction controlled by alpha, minus harvest_width * passes_to_clip.

TODO maybe add ... to give more flexibility in passing arguments?

smmueller/plotdesignr documentation built on Jan. 5, 2022, 10:55 a.m.