sdcTable (version 0.32.6)

getInfo: Retrieve information in sdcProblem or problemInstance objects

Description

Function getInfo() is used to extract values from sdcProblem or problemInstance objects

Usage

getInfo(object, type)

Value

manipulated data depending on arguments object and type

Arguments

object

an object of class sdcProblem or problemInstance

type

a scalar character specifying the information which should be returned. If object inherits class problemInstance, the slots are directly accessed, otherwise the values within slot problemInstance of the sdcProblem object are queried. Valid choices are:

• the object has not yet been protected

  • lb and ub: current possible lower and upper bounds

  • LPL, SPL, UPL: current lower, sliding and upper protection levels

  • sdcStatus: current sdc-status of cells

  • freq: cell frequencies

  • strID: standardized cell ids (chr)

  • numVars: NULL or a list with a slot for each tabulated numerical variable;

  • w: sampling weights or NULL

• the table has already been protected

  • finalData: protected table as a data.table

  • nrNonDuplicatedCells: number of unique (non-bogus) cells in the table

  • nrPrimSupps: number of primary sensitive cells that were protected

  • nrSecondSupps: number of additional secondary suppressions

  • nrPublishableCells: number of cells (status "s or `"z") that may be published

  • suppMethod: name of the algorithm used to protect the table

Author

Bernhard Meindl

Examples

# define an example problem with two hierarchies
p <- sdc_testproblem(with_supps = FALSE)

# apply primary suppression
p <- primarySuppression(p, type = "freq", maxN = 3)

# `p` is an `sdcProblem` object
print(class(p))

for (slot in c("lb", "ub", "LPL", "SPL", "UPL", "sdcStatus",
  "freq", "strID", "numVars", "w")) {
  message("slot: ", shQuote(slot))
  print(getInfo(p, type = slot))
}

# protect the cell and extract results
p_protected <- protectTable(p, method = "SIMPLEHEURISTIC")
for (slot in c("finalData", "nrNonDuplicatedCells", "nrPrimSupps",
  "nrSecondSupps", "nrPublishableCells", "suppMethod")) {
  message("slot: ", shQuote(slot))
  print(getInfo(p_protected, type = slot))
}