Creates rectangular grid for emission allocation

make_grid creates a sf grid of polygons. The spatial reference is taken from the spatial object.

make_grid(spobj, width, height = width, polygon, crs = 4326, ...)

Arguments

spobj	A spatial object of class sp or sf or a Character. When it is a character, it is assumed that it is a path to wrfinput file to create a grid class 'sf' based on this file. This is done by running eixport::wrf_grid.
width	Width of grid cell. It is recommended to use projected values.
height	Height of grid cell.
polygon	Deprecated! make_grid returns only sf grid of polygons.
crs	coordinate reference system in numeric format from http://spatialreference.org/ to transform/project spatial data using sf::st_transform. The default value is 4326
...	ignored

Value

A grid of polygons class 'sf'

Examples

{
data(net)
grid <- make_grid(net, width = 0.5/102.47) #500 mts
plot(grid, axes = TRUE) #class sf
wrf <- paste(system.file("extdata", package = "eixport"),
"/wrfinput_d02", sep="")
gwrf  <- make_grid(wrf)
plot(gwrf, axes = TRUE)

}
#> Number of lon points: 23
#> Number of lat points: 19
#> 
#> path to wrfinput
#> using grid info from: /home/sergio/R/x86_64-pc-linux-gnu-library/3.5/eixport/extdata/wrfinput_d02 
#> Number of lat points 51
#> Number of lon points 63
#> Warning: N is large, and some styles will run very slowly; sampling imposed