XTF -> Resources -> Media collections at the University of Sydney Library -> Hierarchical facets

Hierarchical facets

Hierarchical facets provide a means for expressing nested relationships within classification schemes and taxonomies and enable people to browse a taxonomic pathway through a collection. They also provide a way to efficiently use screen-space, as illustrated in the screenshots below. This is particularly the case with the eBot plant sciences collection which is underpinned by a deep taxonomy.

• Expressing hierarchical relationships
• Extract from an SCA XML record showing hierarchical facet notation
• Screenshots: SCA Archive, top-, first- second- and third-level facet navigation
• Screenshot: Fish-bone image collection, top level taxonomy facet
• Screenshot: eBot plant sciences collection, expanded taxonomy pathway

**Screenshots on this page were taken following site styling.

Expressing hierarchical relationships#hier?

Apart from the steps outlined in the previous section, XTF needs to be provided with an expression of the relationships between the various levels within the hierarchical structure. Relationships are indicated using '::' notation, (as explained in the XTF documentation on the subject).

Extract from an SCA XML record showing hierarchical facet notation#sca?

I followed the example provided in exercise 8 of Martin Haye's tutorial. As part of the pre-processing of metadata (not covered in this discussion), I use Python scripting to create an additional metadata field in each record.

Screenshots: SCA archive, top-, first-, second- and third-level facet navigation#arch?

Top level classification facet.

First level

Second level

Third level

Screenshot: Fish-bone image collection, top-level taxonomy facet#fish?

Screenshot: eBot plant sciences collection, expanded taxonomy pathway#ebot?

Example illustrating partial navigation of the higher level taxonomy of the eBot plant sciences collection.

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