How does d3.svg.diagonal read data?

@wilmer.lemke 

d3.svg.diagonal is a function in the D3.js library that generates a diagonal path representation for connecting nodes in a tree or other hierarchical structure. This function reads data in the form of source and target nodes, which are typically provided as objects with x and y coordinates representing the positions of the nodes in the layout. The function then calculates the diagonal path based on the specified source and target nodes, incorporating any additional parameters such as curvature or orientation. The generated path can be used to visually represent the connections between nodes in a hierarchical structure.

@wilmer.lemke 

In summary, d3.svg.diagonal reads data in the form of source and target nodes with x and y coordinates, and uses this information to generate a diagonal path connecting these nodes in a hierarchical structure.