Random

Base.rand — Method

rand([rng], G, crs=Cartesian3D)

Generate a random geometry of type G with CRS crs, optionally passing a random number generator rng.

Examples

rand(Point)
rand(Triangle)
rand(Point, crs=Cartesian2D)
rand(Triangle, crs=LatLon)

source

Base.rand — Method

rand([rng], G, n, crs=Cartesian3D)

Generate a vector of n random geometries of type G with CRS crs, optionally passing a random number generator rng.

Examples

rand(Point, 10)
rand(Triangle, 10)
rand(Point, 10, crs=Cartesian2D)
rand(Triangle, 10, crs=LatLon)

source

Random geometries can be generated using the rand function:

rand(Point)

Point with Cartesian{NoDatum} coordinates
├─ x: 0.9961405975213472 m
├─ y: 0.024050899634307732 m
└─ z: 0.5487805743353225 m

By default, the rand function uses the Cartesian3D CRS (Coordinate Reference System). It's possible to change the CRS using the crs keyword argument:

rand(Point, crs=Cartesian2D)

Point with Cartesian{NoDatum} coordinates
├─ x: 0.6474292010369982 m
└─ y: 0.11214526972764494 m

A vector of geometries can be generated by passing the number of elements as the second argument:

rand(Segment, 5, crs=LatLon)

5-element Vector{Segment{🌐, CoordRefSystems.GeodeticLatLon{CoordRefSystems.WGS84Latest, Unitful.Quantity{Float64, NoDims, Unitful.FreeUnits{(°,), NoDims, nothing}}}}}:
 Segment((lat: 77.0445°, lon: 142.225°), (lat: -39.6953°, lon: 76.6857°))
 Segment((lat: 50.327°, lon: 95.1528°), (lat: -68.3829°, lon: 11.2548°))
 Segment((lat: 62.9556°, lon: 57.9802°), (lat: -13.5176°, lon: 123.358°))
 Segment((lat: -31.829°, lon: -20.5191°), (lat: 89.2705°, lon: -162.709°))
 Segment((lat: -31.0985°, lon: -113.785°), (lat: 72.976°, lon: -176.439°))

For reproducibility purposes, a random number generator can be passed as the first argument in both methods:

rng = Xoshiro(123)
rand(rng, Triangle)

Triangle
├─ Point(x: 0.521213795535383 m, y: 0.5868067574533484 m, z: 0.8908786980927811 m)
├─ Point(x: 0.19090669902576285 m, y: 0.5256623915420473 m, z: 0.3905882754313441 m)
└─ Point(x: 0.044818005017491114 m, y: 0.933353287277165 m, z: 0.5805599818745412 m)

rand(rng, Triangle, 5)

5-element Vector{Triangle{𝔼{3}, CoordRefSystems.Cartesian3D{CoordRefSystems.NoDatum, Unitful.Quantity{Float64, 𝐋, Unitful.FreeUnits{(m,), 𝐋, nothing}}}}}:
 Triangle((x: 0.327238 m, y: 0.526996 m, z: 0.836229 m), (x: 0.0409061 m, y: 0.465202 m, z: 0.362649 m), (x: 0.102205 m, y: 0.720103 m, z: 0.573619 m))
 Triangle((x: 0.664468 m, y: 0.295367 m, z: 0.276597 m), (x: 0.983436 m, y: 0.880897 m, z: 0.234017 m), (x: 0.380949 m, y: 0.131944 m, z: 0.088291 m))
 Triangle((x: 0.313505 m, y: 0.46361 m, z: 0.713636 m), (x: 0.205925 m, y: 0.0905512 m, z: 0.581912 m), (x: 0.311448 m, y: 0.121148 m, z: 0.20453 m))
 Triangle((x: 0.38669 m, y: 0.018572 m, z: 0.0721807 m), (x: 0.914247 m, y: 0.387374 m, z: 0.771916 m), (x: 0.377383 m, y: 0.875555 m, z: 0.264568 m))
 Triangle((x: 0.901877 m, y: 0.864693 m, z: 0.732238 m), (x: 0.103197 m, y: 0.587585 m, z: 0.809433 m), (x: 0.223841 m, y: 0.858524 m, z: 0.375417 m))