# Ticket #19 (closed task: fixed)

## Implementation of topological functions (revisited)

Reported by: | charnik | Owned by: | somebody |
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Priority: | major | Milestone: | |

Component: | evaluation | Version: | |

Keywords: | topological relations, GeoSPARQL, MBB, minimum bounding box | Cc: |

### Description

Provide two sets of topological relations such that the one checks a relation based on the MBBs and the other one the actual geometries. The functions of GeoSPARQL do the second. Some of ours (strdf:inside) do the first. We should change such functions to follow the standard implementation operating on the actual geometries and introduce new functions with prefix "mbb" that do the first.

## Change History

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Now most important topological functions have an MBB(relation function) and a non-MBB version (operator).