# Projection of Qualitative Variables in PCA and MCA

### Description

It returns the coordinates and aids to the interpretation when one or more qualitative variables are projected as ilustrative in PCA or MCA

### Usage

1 | ```
supqual(du,qual)
``` |

### Arguments

`du` |
a object of class “pca” or “acm” (“dudi”) obtained with |

`qual` |
a data.frame of qualitative variables as factors |

### Value

object of class `list`

with the following:

`wcat` |
weight of the categories in PCA case |

`ncat` |
frequency of the categories in MCA case |

`dis2` |
square distance to the origin from the complete space |

`coor` |
factorial coordinates |

`tv` |
test values |

`cos2` |
square cosinus |

`scr` |
relation of correaltion |

### Author(s)

Campo Elias Pardo cepardot@unal.edu.co

### Examples

1 2 3 4 5 6 7 8 9 10 |