Cheap Tricks for Interaction

Cheap Tricks for Interaction

This example presents an interactive world map using D3.js and TopoJSON. It displays country boundaries from the world-atlas 50m dataset, rendered as SVG paths using the `geoNaturalEarth1` projection and `geoPath`. The map supports zooming via the `zoom` function, which applies a transform to the grouped elements. Hovering over a country highlights it in red through CSS, and clicking the sphere logs an event to the console, while country names appear as tooltips from a TSV lookup file.

Vveagy

Cheap Tricks for Interaction

This example shows an interactive world map rendered with SVG, where hovering highlights countries in red and clicking logs the selected country's ID. The visualization uses D3 v5's `geoPath` and `geoNaturalEarth1` projections to draw geographic boundaries, and the `zoom` interaction module enables pan and zoom transformations. Country names come from a TSV file loaded from the world-atlas package, while geometric data is parsed from TopoJSON using the topojson library.

Vveagy

Cheap tricks for interaction

This example shows a world map where hovering over a country turns it red, with country names available as tooltips. The map uses a Natural Earth projection and renders with SVG paths. The code loads world-atlas TopoJSON and TSV data, then uses `d3.geoPath` and `d3.geoNaturalEarth1` to draw countries. It also demonstrates a rudimentary zoom interaction via `d3.zoom`, though the zoom handler only logs to the console. The visualization relies on d3 v5 and d3-geo-projection for the projection.

YYifei Liu

Cheap Tricks for Interaction

This example displays a world map rendered as an SVG using a natural Earth projection, with countries colored light green on a blue sphere. Hovering over any country turns it red, and the entire map can be panned and zoomed. The visualization loads TopoJSON world data and a TSV file of country names from the world-atlas package, then creates map paths with `d3.geoPath`. Zoom interaction is handled through `d3.zoom` and event transforms, while hover styling is applied via CSS on the `.country` class, with tooltips provided by SVG `<title>` elements.

MMukund Khandelwal

Cheap Tricks for Interaction

This example shows a zoomable world map rendered with D3 v5 and TopoJSON, where hovering over any country highlights it in red. The map uses a natural Earth projection via `d3.geoNaturalEarth1` and `d3.geoPath` to draw country boundaries from the world-atlas 50m dataset, with country names added as tooltips using `<title>` elements. Interaction combines `d3.zoom` on the SVG for pan and zoom transformations, plus CSS `:hover` styling for the highlight effect. The base map and sphere are drawn as SVG paths, with data joined from TSV metadata and JSON topology.

YYF

Cheap Tricks for Interaction

This example shows an interactive world map where hovering over a country highlights it and clicking selects it, turning it red. The visualization uses the D3.js library, specifically `d3.geoNaturalEarth1` for the map projection and `d3.geoPath` for rendering country boundaries. It loads geographic data from the `world-atlas` package via `d3.json` and `d3.tsv`, using `topojson` to convert the TopoJSON features. The map supports zooming through the `d3.zoom` API, which dynamically transforms the SVG group containing the paths.

Vveagy

Cheap Tricks for Interaction

This example shows a world map rendered with D3 v5 and TopoJSON, displaying country boundaries and names as tooltips. The map uses a natural Earth projection via `d3.geoPath` and `geoNaturalEarth1`, with countries filled in light green and a blue sphere background. Loading geographic data from the world-atlas package, the visualization adds a simple hover interaction: CSS changes the country fill to red on mouseover. Country names are joined to the geometry using ISO numeric codes from a TSV file and displayed via SVG `<title>` elements.

LLuce Liu

Cheap Tricks for Interaction

A world map rendered with D3 v5 uses a Natural Earth projection to display countries as filled paths with hover highlighting. The visualization demonstrates simple interaction techniques, including zooming via `d3.zoom` that applies a transform to the map group, and tooltip-like country names using SVG `<title>` elements. Country boundaries come from TopoJSON world-atlas data, while names are matched from a TSV file, with D3’s `geoPath` handling geometry projection.

TThamjith Thaha