Easy upload of ontology files via drag and drop.Version 1.1.5 - released September 11, 2019 Minor fixes due to lastest changes in web browser security (CORS issues). Further improvements to error and exception handling.Version 1.1.7 - released November 18, 2019 The source codes of both WebVOWL and OWL2VOWL are publicly available on GitHub: If you do not use the bundled WAR, you need a server component that links WebVOWL with the OWL2VOWL converter (e.g., a simple script can do the job). There is also a WAR file containing a bundle of both OWL2VOWL and WebVOWL for easy deployment on a Tomcat server:ĭownload bundle (WebVOWL 1.1.7 + OWL2VOWL 0.3.7) ↓ (~26 MB) It requires at least Java 8 and comes with a README file that lists further conversion modes. The converter is based on the OWL API, which can handle various OWL formats (RDF/XML, OWL/XML, Turtle, etc.). Java -jar owl2vowl.jar -iri ""įor instance, the following command converts the FOAF vocabulary into the JSON file required for WebVOWL: To run the OWL2VOWL converter on your machine, download and unpack the following ZIP file:Įxecute the JAR file with the following command (where 'Ontology IRI' is the IRI of the ontology you would like to convert into the VOWL-JSON format): See the JSON template if you would like to edit an existing VOWL-JSON file or create your own. Note that the conversion of ontologies into the VOWL-JSON format is not part of WebVOWL but requires an additional converter such as OWL2VOWL. Simply open the HTML file in the extracted folder to execute WebVOWL. To run WebVOWL on your machine, download and unpack the following ZIP file:ĭownload WebVOWL (version 1.1.7) ↓ (~330 KB) However, note that this last option does not restore the node positions but only the user settings. For example, the following URL opens the VOWL visualization of the FOAF vocabulary showing only subclass relations (by filtering all other property relations) and additionally hiding the sidebar on the right: If the node positions and user settings are not of importance but the VOWL visualization should be reset whenever it is opened, simply link the JSON file generated by OWL2VOWL instead of the one exported from WebVOWL:įinally, custom settings can also be encoded directly in the URL. Note that a different parameter is used in the URL of WebVOWL in this case («url» instead of «iri»). With this option, the VOWL visualization looks alomost the same whenever it is opened. Here is again an example for the FOAF vocabulary: If the JSON file has been exported using WebVOWL, the VOWL visualization will be restored with the layout and user settings it had before. Alternatively, the generated JSON file can be exported and linked or uploaded. A stable VOWL visualization can be shared by exporting it to SVG or printing it as a PDF file. Note that the dynamically generated visualizations will look different due to the force-directed layout. For instance, the following URL requests the visualization of the FOAF vocabulary: If you want to convert a custom ontology another time, simply hit the reload button of your web browser.Ī custom ontology can also be visualized by appending its IRI to the URL of WebVOWL. However, they are cached in the web browser to allow for a more fluent interaction. Note that converted ontologies are neither saved nor cached on the server. For instance, complex datatypes and some instance level constructs are not supported by WebVOWL at the moment.Ī custom ontology can be visualized by opening the Ontology menu and either entering the IRI of the ontology or uploading the ontology file. Note that WebVOWL is able to visualize most language constructs of OWL 2 but not all of them (and also not all combinations). Run WebVOWL » Old WebVOWL version (beta 0.5.2) as fallback » A Java-based OWL2VOWL converter is provided along with WebVOWL. The VOWL visualizations are automatically generated from JSON files into which the ontologies need to be converted. Interaction techniques allow to explore the ontology and to customize the visualization. It implements the Visual Notation for OWL Ontologies (VOWL) by providing graphical depictions for elements of the Web Ontology Language (OWL) that are combined to a force-directed graph layout representing the ontology. WebVOWL is a web application for the interactive visualization of ontologies. WebVOWL: Web-based Visualization of Ontologies VOWL Specification »
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