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Filter grid by minimum observations and minimum number of treatments

Source: R/make_ofe_grid.R
select_grid.Rd

Spatially joins points to the grid, counts observations and distinct treatments per cell, and keeps only cells that satisfy both thresholds.

Usage

select_grid(grid, data, x, min_per_cell = 1L, return_points = FALSE)

Arguments

grid

An `ofe_grid` (from `make_grid()`) or an `sf` polygons grid with `CellID`.

data

An `sf` object of points.

x

Character scalar with the name of the treatment column in `data`.

min_per_cell

Integer, minimum number of observations per cell (default 1).

return_points

Logical, if `TRUE` also returns the joined points restricted to the selected cells (component `points_sel`). Default `FALSE`.

Value

An `ofe_grid` (list) with updated `grid_sel` and `params`. Adds:

  • `cell_stats`: a data.frame with per-cell `n_obs`, `n_trt`, and `treatments` list.

  • `points_sel` (optional): the points that fall in the selected cells.