db.locate {RGeostats}

R Documentation

Define multiple locators

Description

Define the multiple locators for a set of variables

Usage

db.locate(db, names=NA, loctype=NA, start=1, flag.locnew=FALSE)

Arguments

db	Name of the DB to be updated
names	List of names of attributes to be updated.
loctype	Generic type of the locators (for mode information concerning the available locators, please check db.varlist. When set to NA, the locator are set to NA.
start	Index of the locator assigned to the variable(s).
flag.locnew	When TRUE, for a given locator, all attributes which are initially set to this locator are undefined first.

Details

The variables specified in 'columns' are set to this generic locator and numbered from 'start' to 'start+n' (where 'n' designates the length of 'columns'). If the argument "loctype" is not provided, the locators of the variables are set to NA: the variables are declassified.

Value

The db-class where the fields are updated.

See Also

db-class,

Examples

data(Z_data.db) # Load the Documentation Points Db
Z_data.db # Print a short contents of the Db
# The locators are "NA","x1","x2","z1","z2"

# Set the locator of field 5 to the third rank of 'z'
Z_data.db <- db.locate(Z_data.db,5,"z",3) 
Z_data.db

# Set the locator of field 5 to the (defaulted) first rank of 'z'
Z_data.db <- db.locate(Z_data.db,5,"z") 
Z_data.db # Note that the locator of field 4 is discarded 

# Set fields 4 and 5 back to their initial locators
Z_data.db <- db.locate(Z_data.db,seq(4,5),"z")
Z_data.db

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