Names of the categories in a data frame

Returns a vector of names corresponding the the categories in a data frame exclusively composed of categorical variables.

getindexcat(data)

Arguments

data

data frame of categorical variables

Details

This function may be useful prior to a specific MCA, to identify the indexes of the 'junk' categories to exclude.

Value

Returns a character vector with the names of the categories of the variables in the data frame

Author

Nicolas Robette

See also

ijunk, speMCA, csMCA

Examples

data(Music)
getindexcat(Music[,1:5])
#>  [1] "FrenchPop.No"  "FrenchPop.Yes" "FrenchPop.NA"  "Rap.No"       
#>  [5] "Rap.Yes"       "Rap.NA"        "Rock.No"       "Rock.Yes"     
#>  [9] "Rock.NA"       "Jazz.No"       "Jazz.Yes"      "Jazz.NA"      
#> [13] "Classical.No"  "Classical.Yes" "Classical.NA" 
mca <- speMCA(Music[,1:5], excl = c(3,6,9,12,15))