Choropleth Map

Choropleth Map

A choropleth map uses color to encode values across world countries. D3’s `geoPath` and `geoNaturalEarth1` projection render the map from TopoJSON data, while a TSV file supplies per-country attributes. The map color-fills each country by its `scalerank` value using an ordinal color scale. A separate legend component displays the color-to-value mapping, and zooming is enabled via the `zoom` event.

AAdrian Herzog

83% match

Choropleth Map

A choropleth map displays countries of the world colored in light green, with a blue sphere representing the globe and black borders between nations. The visualization uses `d3.geoNaturalEarth1` projection and `d3.geoPath` to render geographic features from TopoJSON data, while country names come from tab-separated values (TSV) data. Interactive zooming is implemented with `d3.zoom`, converting events to SVG transforms. Hovering over a country changes its fill color to red through CSS `:hover` styles, and tooltips with country names appear via SVG `title` elements.

Yyouer

83% match

Choropleth Map

A choropleth map displays countries with a uniform green fill, turning red on hover while the ocean remains light blue. The visualization uses an orthographic projection, rendering country boundaries as SVG paths via the `geoPath` and `geoOrthographic` functions. It loads world map data from the `world-atlas` package (50m JSON and TSV files) and processes TopoJSON features with the `topojson` library. The `zoom` interaction allows panning and scaling the map through SVG transforms, with country names shown in tooltips.

SSophia Murage

Choropleth Map

A choropleth map colors countries by their income group using a categorical ordinal color scale, with hover effects highlighting individual nations. Built with D3 v5, it renders geographic boundaries as SVG paths via `d3.geoPath` and `geoNaturalEarth1`, and loads world geometry from the world-atlas TopoJSON dataset. A custom color legend displays the categories, while zooming is enabled through `d3.zoom`. Data is processed asynchronously with Promises, merging TSV metadata with TopoJSON features.

Choropleth Map

A choropleth map colors countries by their income group using a categorical ordinal color scale, with hover effects highlighting individual nations. Built with D3 v5, it renders geographic boundaries as SVG paths via `d3.geoPath` and `geoNaturalEarth1`, and loads world geometry from the world-atlas TopoJSON dataset. A custom color legend displays the categories, while zooming is enabled through `d3.zoom`. Data is processed asynchronously with Promises, merging TSV metadata with TopoJSON features.

Choropleth Map

A choropleth map colors countries by their income group using a categorical ordinal color scale, with hover effects highlighting individual nations. Built with D3 v5, it renders geographic boundaries as SVG paths via `d3.geoPath` and `geoNaturalEarth1`, and loads world geometry from the world-atlas TopoJSON dataset. A custom color legend displays the categories, while zooming is enabled through `d3.zoom`. Data is processed asynchronously with Promises, merging TSV metadata with TopoJSON features.

Choropleth Map

A choropleth map colors countries by their income group using a categorical ordinal color scale, with hover effects highlighting individual nations. Built with D3 v5, it renders geographic boundaries as SVG paths via `d3.geoPath` and `geoNaturalEarth1`, and loads world geometry from the world-atlas TopoJSON dataset. A custom color legend displays the categories, while zooming is enabled through `d3.zoom`. Data is processed asynchronously with Promises, merging TSV metadata with TopoJSON features.