D3 layer visualization
By default the layer visualization pulls 5 child layers per parent layer and 500 topics per layer. These limits may be overridden with the nl and nt URL query parameters respecively. An usage example of the visualization is provided below.
Note that as with D3 the browser support of D3 visualizations in Wandora is limited to IE9+ and up to date versions of Firefox, Chrome (+Chromium), Safari and Opera.
The visualization now shows both the layer structure and topics in a circular partition layout as well as bezier curves between topics from different layers to visualize topics merging with each other. A 0.37 ratio of merged topics per all topics is shown along with other statistics.
Topics can be selected with a text filter. Here topics matching "GNU", "Linux" and "Open" are shown both in the visualization and the "Now selected" table. Mousing over either the group of merged topics in the visualization or the table highlights the topics in both. Topics can also be selected and deselected by clicking on them in the visualization.