Network Force Layout
A network force layout visualizes relationships in a sample dataset through an interactive SVG graph. Nodes appear as distinct geometric symbols (circles, diamonds, triangles) colored steelblue, connected by thin gray links on a white canvas. The D3 v3 layout positions elements using `d3.layout.force` with configurable link distance and charge, while pan-and-zoom via `d3.behavior.zoom` enables exploration. The interface offers client-side download buttons for saving the visualization as SVG or PNG, with data and chart options supplied externally via JSON.
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Interview Test 2:
the SVG and its PNG files can be downloaded in client-side;
Drag and zoom with your mouse;
The Data is json which combined with drawing data and chart options.