Description Usage Arguments Details Value Author(s) See Also Examples

These are helper function used in the formula interface of `varComp`

and `varComp.test`

. They either sort or split the formula terms involving ":".

1 2 3 | ```
callList2terms(cl)
splitTerm(term)
sortTerm(term, priority)
``` |

`cl` |
A list converted from a call. |

`term` |
A character scalar of a formula term to be re-ordered alphanumerically with respect to the components separated by ":". |

`priority` |
A character vector whose elements have higher priority to be ordered to the front of the term. |

The main use of `sortTerm`

is to transform an interaction term like "B:A" into ordered form "A:B" such that redundant terms are easier to be identified. The results will depend on the system locale.

`callList2terms`

returns a character vector of individual terms (possibly with duplicates). `splitTerm`

returns a character vector of unique individual components in the `term`

. `sortTerm`

returns a character scalar with individual components sorted.

Long Qu

1 2 3 4 |

varComp documentation built on July 9, 2017, 9:02 a.m.

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