R: make_polygons

make_polygons

R Documentation

make_polygons

Description

This function coerces all rectangles from a 'ggplot' object to 'SpatialPolygonDataFrame'.

Usage

make_polygons(
  ggplot_object,
  north = 3454206.89,
  east = 5939183.21,
  projection_input = "+init=epsg:31467",
  projection_output = "+init=epsg:4326"
)

Arguments

`ggplot_object`	saved ggplot object, containing the coordinates of the rectangles of a 'ggplot' object of the first two layers
`north`	float added to the rows to have a northing ordinate
`east`	float added to the rows to have a easting ordinate
`projection_input`	string defines in which EPSG projection the ggplot object should be converted to a raster object? a projection with a metric unit is highly recommended
`projection_output`	string defines in which EPSG projection the SpatialPolygonDataFrame should be exported.

Value

a SpatialPolygonDataFrame object

Examples

library(agricolaeplotr)
library(agricolae)
trt = c(2,3,4)
outdesign1 <-design.crd(trt,r=5,serie=2,2543,'Mersenne-Twister')
plt <- plot_design_crd(outdesign1,ncols = 13,nrows = 3)
spat_df <- make_polygons(plt)
spat_df