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If grid and grid_to are both vectors, the line between grid and grid_to is drawn (using Bresenham's line algorithm). If grid is a list, The path lines for each element in the grid will be drawn.

Usage

grid_line(grid, grid_to = NULL, close = FALSE, skip_na = FALSE)

Arguments

grid

A grid vector or a list of grid vector.

grid_to

A grid vector.

close

Should the path of each element be closed when grid is a list?

skip_na

Should skip the NA grid and connects the paths? FALSE by default.

Value

A list of grid vectors.