R: Calculate distances within Db(s)

db.distance {RGeostats}

R Documentation

Calculate distances within Db(s)

Calculate distances within Db(s)

db.distance(db1, db2=NA, mode=0, nvar.iso=0)

`db1`	The `db-class` first structure where the samples are read.
`db2`	The `db-class` second structure where the samples are read. If the file is not specified, 'db2' is set equal to 'db1'; then the distances are considered EXCLUDING the comparison between a sample and itself.
`mode`	Type of returned information: 0 The minimum and maximum distance is returned 1 The array of distances, for each valid sample of 'db2' to the closest valid sample of 'db1' 2 The array of distances between all valid samples of 'db2' and all valid samples of 'db1'.
`nvar.iso`	This argument defines the number of variables (with locator Z) that must be defined simultaneously in 'db1' or 'db2': then the sample is considered as 'valid'.

The result depends on the definition of the input Dbs.

When 'mode'==0, this function returns a list containing the following elements:
- dmin: Minimum distance
- dmax: Maximum distance
When 'mode'==1, the returned argument the vector of distances of the closest active sample.
When 'mode'==2, the returned argument is the matrix of distances between all active samples of first Db (row) and all active samples of the second Db (column).

[Package RGeostats version 14.0.10 Index]