Exercise 5

Tree diagram loading external json with v5

This example shows a tree diagram that visualizes hierarchical data loaded from an external JSON file. The diagram uses a horizontal layout where parent nodes appear on the left and child nodes extend to the right, with circular markers and text labels for each node. The visualization is rendered as an SVG, built with d3.js v5, using the `d3.tree()` layout algorithm, `d3.hierarchy()` for structuring parent-child relationships, and `d3.json()` for asynchronous data loading. The data itself is a simple family tree with a top-level node, two second-level nodes, and two leaf nodes.

Tree

This visualization displays a hierarchical tree derived from a JSON data file, showing the structure of a model named "HOBS" with its contained classes, attributes, and relationships. The tree layout is generated using D3's `tree` and `hierarchy` functions, with links drawn via the `linkVertical` path generator. The interactive viewport supports zooming through D3's `zoom` event handler, with an `event.transform` applied to the SVG group. Each node renders as a text label positioned by its calculated coordinates, using the Playfair Display font.

MMTR

d3NoobV5 Reusable Examples - Tree Diagram Interactive v5

This example shows an interactive tree diagram built with D3.js v5, displaying hierarchical data from a flat JSON array. The visualization uses d3.stratify to convert the flat parent-child relationships into a hierarchy, followed by d3.tree to compute the layout. Nodes are rendered as SVG circles with text labels, connected by curved paths that serve as links. The code follows a reusable chart pattern, with margins, configurable dimensions, and a title, all drawn within an SVG container. The data includes five nodes across three levels, with the tree expanding downward and to the right.

JJimMaltby

Tree Example

This interactive tree diagram displays the hierarchical structure of a dataset, with nodes and links rendered using SVG and animated transitions. The visualization uses D3.js version 3, with the `d3.layout.tree` for layout and `d3.svg.diagonal` for curved links. Clicking nodes expands or collapses their children, with smooth transitions achieved through `transition.attr`. The static data is embedded in the code, and the example also includes a separate CSV file for population data, though it is not referenced in the visualization.

1123ATFake

Simple horizontal tree diagram using v5

A simple horizontal tree diagram visualizes hierarchical data with three levels: a top-level root node, two second-level branches, and two leaf nodes. The code uses D3.js v5’s `d3.tree()`, `d3.hierarchy()`, and `d3.select()` APIs to compute the layout and render SVG paths for curved links and circles for nodes, with text labels positioned left or right based on whether a node has children. The diagram is defined by a static JavaScript object `treeData` and styled via CSS classes.

Tree graph

A tree visualization displays a hierarchical data structure from a JSON file, showing parent-child relationships through vertical links and labeled nodes. The graph represents an object model with classes, attributes, and methods, using D3 v5's `tree`, `hierarchy`, and `linkVertical` layouts to position elements. Interactive pan and zoom functionality is implemented via `d3.zoom`, while nodes are rendered as SVG text with `foreignObject` elements containing input fields. The visualization supports exploration of complex nested data through its expandable tree layout.

66264kusuma@gmail.com

Tree diagram using flat data with v5

This example shows a horizontal tree diagram built with D3 v5, displaying hierarchical data from a flat array of name and parent fields. It converts the flat data into a hierarchy using `d3.stratify`, then applies the `d3.tree` layout to position nodes. The SVG rendering includes curved `path` links between nodes, with circles for nodes and labels positioned to the right for leaves and left for internal nodes. The code uses `d3.hierarchy` and D3 selections to append elements, styled with CSS for node fills and link strokes.

Simple vertical tree diagram using v5

This example presents a vertical tree diagram built with d3.js v5, displaying a small parent-child dataset with nodes labeled "Top Level," "Level 2: A," and their descendants. It shows the hierarchical structure through SVG rendering, with circular nodes connected by curved paths. The code uses `d3.hierarchy` to process the nested data and `d3.tree()` to compute layout positions. Links are drawn as cubic Bézier curves via path string generation, while each node is a group containing a circle and centered text label, with internal nodes styled slightly differently from leaves.