Oblique Geographic Coordinates proxy factory

Returns a function that generates Oblique Geographic Coordinates (OGC) as covariates.

proxy_ogc(n = 5)

Arguments

n

Number of angles (default: 5)

Value

A function that accepts rast_grid and returns a SpatRaster

References

Møller, A. B., Beuchert, A. M., Pouladi, N., & Greve, M. H. (2020). Oblique geographic coordinates as covariates for digital soil mapping. Soil, 6(2), 269-289.

Examples

rast_grid = terra::rast(
  ncols = 300, nrows = 100,
  xmin = 0, xmax = 300,
  ymin = 0, ymax = 100
)

make_proxy(rast_grid, proxy_ogc(n = 5))
#> class       : SpatRaster 
#> size        : 100, 300, 5  (nrow, ncol, nlyr)
#> resolution  : 1, 1  (x, y)
#> extent      : 0, 300, 0, 100  (xmin, xmax, ymin, ymax)
#> coord. ref. :  
#> source(s)   : memory
#> names       : OGC_0,      OGC_36,      OGC_72,   OGC_108,    OGC_144 
#> min values  :   0.5,   0.6984011,   0.6300368, -92.07506, -242.00670 
#> max values  : 299.5, 300.7852224, 187.1807132,  94.47561,   58.08012