Skip to main content
SimilarExport ZIP
100%

Let's make a JPN map with D3.js!

✓ Published0🌍 Public
Ddaigokawabe
Last edited Aug 11, 2020
Created on Aug 10, 2020

This example displays a black-and-white map of Japan with prefecture boundaries rendered as white strokes, using the jpn-atlas dataset as its geographic source. It loads the data from a remote JSON file and applies a Mercator projection through `d3.geoMercator` and `d3.geoPath` to generate SVG paths for each prefecture. The code uses `topojson.feature` to convert the TopoJSON into GeoJSON, then binds the features to path elements in the SVG. The visualization demonstrates a straightforward D3 v5 workflow for choropleth preparation.

AI-generated description
MIT Licensed

Similar vizzes

Loading thumbnail…

Japan Map

This visualization displays a map of Japan using D3.js, with each prefecture rendered as a green path. The map uses a Mercator projection with zoom and pan interaction enabled via D3’s `zoom` behavior. TopoJSON data is loaded and converted to GeoJSON using the `feature` API, then paths are drawn with `d3.geoPath`. The code leverages `d3.json` for data loading, `scaleOrdinal` and `schemeCategory10` for potential color scaling, and the `d3-geo-projection` library for projection support. The SVG output is styled with CSS.

Ggayuvurukuti@gmail.com
86% match
Loading thumbnail…

Fork of Japan Map

This example displays a choropleth map of Japan’s prefectures, rendered as SVG paths with a uniform orange fill and white strokes. The code loads TopoJSON data twice via `d3.json` and uses `topojson.feature` to extract administrative boundaries. A `d3.geoMercator` projection with `d3.geoPath` draws the geography, while `d3.scaleOrdinal` and `schemeCategory10` are available for potential color encoding. The map supports pan and zoom through `d3.zoom`, transforming a grouped `<g>` element.

Ssivamani
85% match
Loading thumbnail…

Japan Map

This example displays a map of Japan using a Mercator projection, rendered as an SVG path with a violet fill that transitions to light blue on hover. It loads geographic data from the world-atlas TopoJSON dataset, extracts Japan’s geometry via `topojson.feature`, and fits the projection to the country’s bounds using `d3.geoMercator().fitSize`. The visualization applies `d3.zoom` for interactive pan and zoom, and uses `d3.json` to fetch the data asynchronously.

HHarshithaAmbilpur
84% match
Loading thumbnail…

Fork of Japan Map

This example visualizes Japan’s administrative boundaries using a Mercator projection rendered as SVG paths. The map displays prefecture outlines in pink with black strokes, colored via d3.scaleOrdinal and schemeCategory10, and supports pan and zoom through d3.zoom. Data is loaded via d3.json from a TopoJSON file, converted to GeoJSON with topojson.feature, and drawn using d3.geoPath. The code imports d3 modules for selection, projections, scales, and event handling, while d3-geo-projection.v2 is included for additional projection support.

KKeerthipriyaBankuru
84% match
Loading thumbnail…

Fork of Japan Map

This example displays a map of Japan rendered as SVG paths, with each geographic region filled in a solid color and outlined by white borders. The visualization uses a Mercator projection configured with `d3.geoMercator` and applies a zoom behavior via `d3.zoom` to enable interactive panning and scaling. Geographic data is loaded as TopoJSON from a remote GitHub source and converted to GeoJSON using the `feature` function from `topojson`. Color encoding relies on `d3.scaleOrdinal` with `schemeCategory10`, though the code fetches a Greece dataset, so the map’s actual region boundaries may not match the title.

YYiorgos Bagakis
84% match
Loading thumbnail…

Untitled

This example displays a map of Japan rendered as SVG paths, with each prefecture drawn as a black shape outlined in white. The visualization uses d3.geoMercator projection with a clip extent and centers the map at coordinates [140, 30] with a scale of 700. It loads GeoJSON data via topojson’s feature method, applies a categorical color scale, and supports zooming and panning through d3.zoom. The map’s styling and layout are defined in an external stylesheet, and the data comes from a remote gist.

Vvenkatajayanth03
84% match
Loading thumbnail…

Fork of Japan Map

This example presents a zoomable choropleth map of Japan’s administrative regions, rendered as SVG paths filled with distinct colors from a categorical scale. Using D3 v5 and d3-geo-projection, it applies a Mercator projection clipped to the viewport, with pan and zoom enabled via d3.zoom. Geographic boundaries come from TopoJSON data (JPN_adm1), processed with topojson.feature and drawn using d3.geoPath. The map highlights each prefecture uniformly, with white strokes separating regions.

Vviswak12
84% match
Loading thumbnail…

Japan Country

This map of Japan renders land areas as aquamarine shapes with black outlines, using a Mercator projection. The visualization uses topojson data fetched from a GitHub gist, with TopoJSON APIs (`topojson.presimplify`, `topojson.feature`) for simplification and conversion to GeoJSON. It applies D3’s `d3.geoTransform` to filter polygon details based on a threshold, which is adjustable via a range slider, and draws paths with `d3.geoPath` onto an SVG canvas. The map redraws dynamically when the slider changes or the window resizes.

Hhappymail6
83% match