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: 0.305715296656091 m
├─ y: 0.17742180830253107 m
└─ z: 0.7028376469124288 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: 0.5164549836077837 m
└─ y: 0.9659023717109185 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: -24.3177°, lon: -91.9928°), (lat: 34.8483°, lon: 113.677°))
 Segment((lat: 9.44781°, lon: 166.956°), (lat: 43.3714°, lon: 71.7035°))
 Segment((lat: -55.1234°, lon: -28.9327°), (lat: -65.5393°, lon: -116.036°))
 Segment((lat: 65.4324°, lon: 122.533°), (lat: 63.7443°, lon: -109.587°))
 Segment((lat: -15.9091°, lon: 122.746°), (lat: 1.85198°, lon: -84.0665°))

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

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

Triangle
├─ Point(x: 0.37453777969575874 m, y: 0.8735343642013971 m, z: 0.29012488666251546 m)
├─ Point(x: 0.3368408330598551 m, y: 0.6622706870716968 m, z: 0.7763361853035142 m)
└─ Point(x: 0.5034055294549571 m, y: 0.7501773674527126 m, z: 0.9103373216185842 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: 0.464067 m, y: 0.695031 m, z: 0.398404 m), (x: 0.381605 m, y: 0.816696 m, z: 0.904999 m), (x: 0.32071 m, y: 0.606174 m, z: 0.610766 m))
 Triangle((x: 0.0877252 m, y: 0.92557 m, z: 0.597156 m), (x: 0.74611 m, y: 0.891596 m, z: 0.0626721 m), (x: 0.070898 m, y: 0.0485191 m, z: 0.652385 m))
 Triangle((x: 0.580893 m, y: 0.339631 m, z: 0.644323 m), (x: 0.580265 m, y: 0.226512 m, z: 0.289129 m), (x: 0.630659 m, y: 0.47637 m, z: 0.282868 m))
 Triangle((x: 0.886623 m, y: 0.511879 m, z: 0.503287 m), (x: 0.193622 m, y: 0.470371 m, z: 0.0511627 m), (x: 0.388379 m, y: 0.739729 m, z: 0.925322 m))
 Triangle((x: 0.397732 m, y: 0.47886 m, z: 0.293984 m), (x: 0.176495 m, y: 0.999095 m, z: 0.822975 m), (x: 0.500431 m, y: 0.736043 m, z: 0.149681 m))