plot_longest_diagonal {agricolaeplotr}

Plot the longest diagonal of a field

Description

This function takes a field and plots the longest diagonal of the field. The field is divided into segments and points are sampled from these segments.

Usage

plot_longest_diagonal(
  field,
  n = 8,
  type = "random",
  n_segments = 2,
  distance_field_boundary = 3,
  width_diagonal_path = 2
)

Arguments

field

An object of class sf representing the field.

n

Integer, the number of sample points along the longest diagonal.

type

Type of sampling. Default is "random".

n_segments

Numeric, the number of segments to divide the longest diagonal (default is 2).

distance_field_boundary

Numeric, the distance to buffer the field for creating the boundary (default is 3.0).

width_diagonal_path

Numeric, the width to buffer the diagonal path (default is 2.0).

Value

• p: A ggplot object showing the field, the buffered field, the buffered line, and the sample points.

• buffered_line: A sf object representing the buffered line.

• my_line: A sf object representing the longest diagonal of the field.

• sample_points: A sf object representing the sampled points.

• length: A numeric value, representing the length of the longest line.

Examples

library(sf)
my_sf <- st_read(system.file("shape/gfn_schlaege.shp", package="agricolaeplotr"))
st_crs(my_sf) <- 25832
field <- my_sf[my_sf$SCHLAG_NR == 170,]
plot_longest_diagonal(field)