tdbscan

tdbscan

Usage

tdbscan(track, eps, minPts = 5, borderPoints = FALSE, maxLag = 6, minTenure)

Arguments

track

A sf object (for now).

eps

size of the epsilon neighborhood (see dbscan::dbscan() ).

minPts

number of minimum points in the eps region (for core points). Default is 5 points (see dbscan::dbscan() ).

borderPoints

Logical; default to FALSE (see dbscan::dbscan() ).

maxLag

maximum relative temporal lag (see notes). Default to 6.

minTenure

minimum time difference, in hours, between the last and the first entry a cluster. Clusters with values smaller than minTenure are discarded.

Note

When maxLag is set to maxLag>N output is the same as for dbscan.

Examples

data(pesa56511)
x = as_tdbscan(pesa56511, time = "locationDate")
x = sf::st_transform(x, "+proj=eqearth")
z = tdbscan(track = x, eps = 6600, minPts = 8, maxLag = 6)
table(z$clustID)
#> 
#>   1   2   3   4   5   6 
#>  67  60  17  33 128 454