Directed World languages graph. See Demo
It uses public data extracted from multiple sources, and D3js to render the graph.
As the dataset improves I'll add a RESTful API to consume it, instead of the current JSON file. I will also probably move it to another repository containing only the data.
The graph renderer accepts several parameters that are then fed to D3:
| Parameter | Default | Description |
|---|---|---|
| linkDistance | 30 | Sets the target distance between linked nodes to the specified value. Links are not implemented as "spring forces", as is common in other force-directed layouts, but as weak geometric constraints. |
| charge | -60 | Sets the charge strength to the specified value. A negative value results in node repulsion, while a positive value results in node attraction. |
| linkStrength | 0.1 | Sets the strength (rigidity) of links to the specified value in the range [0,1]. |
| friction | 0.002 | Sets the friction coefficient to the specified value. It is similar to velocity decay: at each tick of the simulation, the particle velocity is scaled by the specified friction. Thus, a value of 1 corresponds to a frictionless environment, while a value of 0 freezes all particles in place. |
| gravity | 0.1 | Sets the gravitational strength to the specified numerical value. gravity is implemented as a weak geometric constraint similar to a virtual spring connecting each node to the center of the layout's size. |
| theta | 0.8 | Sets the Barnes–Hut approximation criterion to the specified value. |
| alpha | 0.1 | Sets the force layout's cooling parameter |