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Make a grid from a Simple Feature Polygon

Source: R/grid_area.R
grid_area.Rd

Create a grid from a given polygon with a certain resolution and proportionality. The grid cell centroids represent possible wind turbine locations.

Usage

grid_area(shape, size = 500, prop = 1, plotGrid = FALSE)

Arguments

shape

Simple Feature Polygon of the considered area

size

The cellsize of the grid in meters. Default is 500

prop

A factor used for grid calculation. It determines the minimum percentage that a grid cell must cover the area. Default is 1

plotGrid

Logical value indicating whether the results should be plotted. Default is FALSE

Value

Returns a list with 2 elements. List element 1 will have the grid cell IDS, and the X and Y coordinates of the centers of each grid cell. List element 2 is the grid as Simple Feature Polygons, which is used for plotting purposes.

Note

The grid of the genetic algorithm will have a resolution of Rotor * fcrR. See the arguments of genetic_algorithm

See also

Other Helper Functions: get_grids(), hexa_area(), isSpatial(), permutations(), readintegerSel(), readinteger(), splitAt(), windata_format()

Examples

# \donttest{
## Exemplary input Polygon with 2km x 2km:
library(sf)
Polygon1 <- sf::st_as_sf(sf::st_sfc(
  sf::st_polygon(list(cbind(
    c(0, 0, 2000, 2000, 0),
    c(0, 2000, 2000, 0, 0)
  ))),
  crs = 3035
))

## Create a Grid
grid_area(Polygon1, 200, 1, TRUE)


grid_area(Polygon1, 400, 1, TRUE)



## Examplary irregular input Polygon
Polygon1 <- sf::st_as_sf(sf::st_sfc(
  sf::st_polygon(list(cbind(
    c(0, 0, 2000, 3000, 0),
    c(20, 200, 2000, 0, 20)
  ))),
  crs = 3035
))

## Create a Grid
grid_area(Polygon1, 200, 1, TRUE)


grid_area(Polygon1, 200, 0.1, TRUE)


grid_area(Polygon1, 400, 1, TRUE)


grid_area(Polygon1, 400, 0.1, TRUE)


# }