Prints out information about a Quadtree.
Information shown is:
class of object
number of cells
minimum cell size
extent
projection
minimum and maximum values
# S4 method for Quadtree
summary(object)
# S4 method for Quadtree
show(object)a Quadtree object
no return value
library(quadtree)
habitat <- terra::rast(system.file("extdata", "habitat.tif", package="quadtree"))
qt <- quadtree(habitat, .1)
summary(qt)
#> class : Quadtree
#> # of cells : 5911
#> min cell size : 250
#> extent : 0, 64000, 0, 64000 (xmin, xmax, ymin, ymax)
#> crs : PROJCRS["unknown",
#> BASEGEOGCRS["unknown",
#> DATUM["Unknown based on Airy 1830 ellipsoid",
#> ELLIPSOID["Airy 1830",6377563.396,299.3249646,
#> LENGTHUNIT["metre",1,
#> ID["EPSG",9001]]]],
#> PRIMEM["Greenwich",0,
#> ANGLEUNIT["degree",0.0174532925199433,
#> ID["EPSG",9122]]]],
#> CONVERSION["Transverse Mercator",
#> METHOD["Transverse Mercator",
#> ID["EPSG",9807]],
#> PARAMETER["Latitude of natural origin",49,
#> ANGLEUNIT["degree",0.0174532925199433],
#> ID["EPSG",8801]],
#> PARAMETER["Longitude of natural origin",-2,
#> ANGLEUNIT["degree",0.0174532925199433],
#> ID["EPSG",8802]],
#> PARAMETER["Scale factor at natural origin",0.9996012717,
#> SCALEUNIT["unity",1],
#> ID["EPSG",8805]],
#> PARAMETER["False easting",400000,
#> LENGTHUNIT["metre",1],
#> ID["EPSG",8806]],
#> PARAMETER["False northing",-100000,
#> LENGTHUNIT["metre",1],
#> ID["EPSG",8807]]],
#> CS[Cartesian,2],
#> AXIS["easting",east,
#> ORDER[1],
#> LENGTHUNIT["metre",1,
#> ID["EPSG",9001]]],
#> AXIS["northing",north,
#> ORDER[2],
#> LENGTHUNIT["metre",1,
#> ID["EPSG",9001]]]]
#> values : 0.107, 0.974 (min, max)