Separate Hyphenated Variable Strings

This code is a simplified form of expandCmd from the lavaan package. It separates hyphenated variable strings into a list of vectors, while ignoring hyphens that may be used in numbers.

separateHyphens(cmd)

Arguments

cmd	A character string

Value

The character string if no hyphens, or a list of vectors if there are hyphens.

Details

Note that this is an internal function only.

Author

Michael Hallquist revised by Joshua Wiley

Examples

MplusAutomation:::separateHyphens("x1x4")
#> [1] "x1x4"
MplusAutomation:::separateHyphens("x1-x4")
#> [[1]]
#> [1] "x1" "x4"
#> 
MplusAutomation:::separateHyphens("x1-x4; x1*-1; v1-v3;")
#> [[1]]
#> [1] "x1" "x4"
#> 
#> [[2]]
#> [1] "v1" "v3"
#>