robCompositions (version 1.9.1)

missPatterns: missing or zero pattern structure.

Description

Analysis of the missing or zero patterns structure of a data set.

Usage

missPatterns(x)
zeroPatterns(x)

Arguments

x

a data frame or matrix.

Value

• groups
  List of the different patterns and the observation numbers for each pattern
• cn
  the names of the patterns coded as vectors of 0-1's
• tabcomb
  the pattern structure - all combinations of zeros or missings in the variables
• tabcombPlus
  the pattern structure - all combinations of zeros or missings in the variables including the size of those combinations/patterns, i.e. the number of observations that belongs to each pattern.
• rsum
  the number of zeros or missing values in each row of the data set

Details

Here, one pattern defines those observations that have the same structure regarding their missingness or zeros. For all patterns a summary is calculated.

See Also

aggr

Examples

data(expenditures)
## set NA's artificial:
expenditures[expenditures < 300] <- NA
## detect the NA structure:
missPatterns(expenditures)