grid_cellsize {tidysdm}

Get default grid cellsize for a given dataset

Description

This function facilitates using spatialsample::spatial_block_cv multiple times in an analysis. spatialsample::spatial_block_cv creates a grid based on the object in data. However, if spatial blocks are generated multiple times in an analysis (e.g. for a spatial_initial_split(), and then subsequently for cross-validation on the training dataset), it might be desirable to keep the same grid). By applying this function to the largest dataset, usually the full dataset before spatial_initial_split(). The resulting cellsize can be used as an option in spatialsample::spatial_block_cv.

Usage

grid_cellsize(data, n = c(10, 10))

Arguments

data

a sf::sf dataset used to size the grid

n

the number of cells in the grid, defaults to c(10,10), which is also the default for sf::st_make_grid()

Value

the cell size