====== Get Map Categories ======

===== Description =====

Extracts a copy of the categorization of a map.

===== Inputs =====

^ Name  ^ Type  ^ Description  ^
| Categorical Map  | [[Map Type]]  | Map whose categorization will be extracted.  |

===== Optional Inputs =====

None.

===== Outputs =====

^ Name  ^ Type  ^ Description  ^
| Categories  | [[Categorization Type]]  | Categorization extracted from Categorical Map.  |

===== Group =====

[[Functor List#Map Algebra | Map Algebra]]

===== Notes =====

Raises an error if Categorical Map has no categorization defined. If this is expected to happen, use a [[Skip All On Error]] to intercept the error, and a [[Calculate Categorical Map]] to derive the categories from the map's values instead.

===== Internal Name =====

GetMapCategories