used as a helper function to return number of categories of categorical variable

1 | ```
NumCat(ColDes, DataMat, NADes)
``` |

`ColDes` |
which column number is the number for the data vector for which number of unique categories to be returned |

`DataMat` |
this the dataframe or can be a matrix of data with different variables as the columns |

`NADes` |
this is the value to be used for the missing category of data |

helper function which specifies number of unique categories excluding missing category of a column of a dataframe or matrix

`comp1 ` |
returns numeric value of number of unique categories excluding missing category for vector of data |

No notes

William Terry

No References

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