Description Usage Arguments Value Examples

Sample points based on distance matrix so that distance between any pair is not less than a fixed radius. This will not preserve density, but does preserve local outliers.

1 |

`d` |
object of class 'dist' |

`radius` |
(numeric) radius around a point |

`seed` |
(positive integer) A seed. Default is 1. |

`...` |
Arguments for |

Index of condensed points

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 | ```
library("magrittr")
dataset <- rbind(
MASS::mvrnorm(1000, mu = c(0, 0), Sigma = matrix(c(1, 0.3, 0.3, 1), 2))
, MASS::mvrnorm(100, mu = c(10, 10), Sigma = matrix(c(1, 0.3, 0.3, 1), 2))
, MASS::mvrnorm(10, mu = c(5, 5), Sigma = matrix(c(1, 0.3, 0.3, 1), 2))
, MASS::mvrnorm(10, mu = c(0, 8), Sigma = matrix(c(1, 0.3, 0.3, 1), 2))
, MASS::mvrnorm(10, mu = c(7, 0), Sigma = matrix(c(1, 0.3, 0.3, 1), 2))
)
plot(dataset)
do <- dist(dataset)
dbscan::kNNdist(do, 4) %>% apply(1, median) %>% summary()
ci <- condense(do, 0.103)
dataset[ci, ] %>% plot()
dataset[condense(do, 0.68), ] %>% plot()
``` |

talegari/sidekicks documentation built on Sept. 26, 2018, 4:18 p.m.

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