This is an overview of implemented features. For upcoming features take a look at our Roadmap.
The web interface provides tools to enter and manipulate data which will be saved in a CIDOC CRM compatible model to a PostgreSQL database. A main focus of OpenAtlas is to design a web interface that allows users not to focus on the the underlying data model but to enter data in a convenient and easy way. Therefore, the CIDOC CRM specification was imported into the system. It can be browsed and is used to verify link conformity between entities. Additionally, link combinations can be tested manually e.g when planning model extensions.
Places with known location can be entered into an interactive map based on Leaflet, which features different view layers, allows for zooming, fullscreen mode, clustering, searching and much more. PostGIS is used for creating and manipulating spatial data. Therefore, it is possible to enter location as needed as multiple points, lines, areas and shapes.
System, Custom and Value Types
Due to this feature, the model and user interface forms can be adapted for specific research interests. Already provided system types can be extended. Additionally, it is possible to add new types e.g. "hair color" for persons. These type hierarchies can be configured to allow single or multiple choices. A type can be used for multiple entities e.g. a hierarchy like "importance" for places, actors and groups. Furthermore, value types can be created to add numeric values e.g. weight or material composition of a find.
Entries can be linked to external reference systems using SKOS based precision. GeoNames and Wikidata are already included in the default application using their APIs and more can be added. Also linking generic references, e.g. providing an URL for an actor to a Wikipedia entry is possible.
Files can be uploaded and linked with entities. It is possible to link one file to multiple entities (e.g. a group picture showing different actors) and the other way round. Files are available to download in the original size. In the admin interface the upload file size limit and allowed extensions can be configured.
Due to the integration of D3.js, it is possible to visualize data as a network graph in 2D and 3D.
Spatial and Temporal Fuzziness
In many cases the spatial or temporal position respectively extent of an entity is not known precisely. Therefore, OpenAtlas allows to define time-spans (earliest/latest begin and earliest/latest end) or areas in which the temporal respectively spatial extent can be located with a 100% certainty.
These allow detailed mapping of archaeological finds, e.g. in a cemetery. They are used in a strict hierarchy: Place -> Feature (e.g. a grave) -> Stratigraphic Unit (e.g. a coffin or skeleton) -> Find (e.g. grave goods) and Human Remains (e.g. for anthropological information on the burial).
Search and Filters
To allow quick navigation, even in a big data set, full-text search is possible. Additionally, a refined advanced search can be used to filter the results (e.g. only actors or a search in descriptions). Tables and tree views, that can have many entries, have a full-text filter for convenience. The map provides a search field for a GeoNames search.
An application programming interface (API) for easier exchange with other information system was implemented. In it's first version it is possible to request data from single entities. The output is based on JSON-LD syntax and GeoJSON. Linked Places was used as standard. More features will follow in upcoming versions.
A CSV export for single tables and a SQL export (pg_dump) are implemented in the admin interface.
CSV lists can be imported, e.g. a list of places (name, description, dates and point coordinates).
Data integrity check functions
Because data integrity is important for the quality of research data, we implemented functions to check possible inconsistencies including checks for orphaned data, date inconsistency, duplicates, similar names, invalid links, unused types and more.
Users and Groups
Users and Groups are used to grant different access levels. If an email is configured, new users can receive an automated mail with access data and can request a password resets.
Multiple languages for the user interface are implemented with gettext. At the moment English and German are available. Easy extention to other languages is possible, when translations available.
This feature enables managers and admins to send newsletters. An editable receiver list with users who have opted in is shown. Newsletters will contain an unsubscribe link.
Bookmarks and notes
Bookmarks and notes are user specific and can be used to e.g. mark entries which need further editing. Already bookmarked entities and notes are shown on the start page after login.