Sample uniformly in or on a hyperspheres or hypercubes.

1 2 3 | ```
runif_cube(n, m = 2, max.dist = 1, at = FALSE, nr.dist = 21)
runif_sphere(n, m = 2, max.radius = sqrt(m), at = FALSE, nr.rad = 21)
``` |

`n` |
number of points to sample |

`m` |
number of design factors |

`max.dist` |
maximum distance from origin (L-infinity norm/supremum distance) for the hypercuboidal design region (enveloping hypercube) |

`at` |
logical indicating whether to sample on concentric hyperspheres/hypercubes or not. With this
option |

`nr.dist` |
the number of concentric hypercubes to use in case at is |

`max.radius` |
maximum radius of the hyperspherical design region (enveloping hypersphere) |

`nr.rad` |
number of concentric hyperspheres to sample on in case of |

Pieter C. Schoonees

Pieter C. Schoonees, Niel J. le Roux, Roelof L.J. Coetzer (2016). Flexible Graphical Assessment of
Experimental Designs in R: The vdg Package. *Journal of Statistical Software*, 74(3), 1-22.
doi: 10.18637/jss.v074.i03.

1 2 3 4 5 6 | ```
set.seed(1234)
runif_sphere(n = 10)
set.seed(1234)
samp <- runif_sphere(n = 500, at = TRUE)
plot(samp, asp = 1)
``` |

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