OpenStreetMap + d3 tiles + brush slider

Vector Tiles

This example displays vector-tiled map data, rendering both road networks and building footprints over San Francisco. The visualization loads GeoJSON tiles from an external OpenStreetMap vector-datasource service and projects them using `d3.geo.mercator` and `d3.geo.path`. It employs the custom `d3.geo.tile` helper to compute visible tile coordinates at the current zoom level, then asynchronously fetches and draws each tile’s features as SVG paths. Road types are distinguished by stroke colors, while buildings appear as solid black polygons.

74% match

Vector Tiles

This interactive map displays vector tiles of road networks from OpenStreetMap, rendered as SVG paths. It uses Mapzen’s vector tile API to load road data, and d3.geoMercator’s projection with a d3.tile-based tile system to fetch and display 256×256 tiles. The visualization supports pan and zoom via d3.zoom, with a matrix3d transform for scaling and translation. Mouse movement updates a location readout showing latitude and longitude, computed by inverting the projection.

74% match

Vector Tiles

This example displays a static vector-tile map of San Francisco’s roads, with major highways, minor roads, and rail lines rendered as stylized SVG strokes. Using D3 v3, it loads Mapzen’s OpenStreetMap “roads” tiles via `d3.json`, sorts features by `sort_key`, and draws each path with `d3.geo.path` and a Mercator projection. A custom `d3.geo.tile` helper computes the visible tile range and scale, while CSS classes like `.highway` and `.rail` assign distinct colors and widths.

73% match

d3-tile wrapping

This example displays an interactive SVG world map using tiled raster images from OpenStreetMap, with tile-wrapping toggled by a checkbox. The visualization relies on the `d3-tile` library’s `tile.wrap` method to generate tile coordinates, and `d3.geoMercator` with `d3.geoPath` for the projection. An HTML form checkbox controls the `wrap` flag, triggering a `loadTiles` function that rebuilds the image layer. Each tile is fetched from the `a.b.c.tile.openstreetmap.org` subdomains. The map’s scale and translation are computed and applied via SVG group transforms.

CCurran Kelleher

Zoomable Map Tiles

This interactive map shows a zoomable view of OpenStreetMap tiles that smoothly pans and zooms across geographic regions. It uses the `d3.geo.tile` plugin to calculate which 256x256 tile images are visible in the viewport based on current scale and translate values, while `d3.behavior.zoom` handles user panning and zooming interactions. The tiles are rendered as `img` elements positioned absolutely, and a `d3.geo.mercator` projection inverts mouse coordinates to display the latitude and longitude at the cursor.

Map Tiles in D3

This interactive map demo, animated with D3, shows map tiles being loaded and positioned as users progressively zoom and pan. It provides a proof-of-concept for tile-based mapping using only D3, avoiding dedicated map libraries. The visualization fetches OpenStreetMap tiles from MapQuest’s tile server, addressing them by column, row, and zoom level. The animation uses D3's selection and transition methods, applying CSS 3D transforms via `matrixString` for smooth scaling, and manages a request queue for efficient image loading. The code demonstrates DOM manipulation and coordinate logic borrowed from Modest Maps, with a fallback to standard CSS transforms.

RRandomEtc

basemap

This example displays a zoomable map of Washington, D.C., with a red trail and bike station data overlaid on OpenStreetMap tiles. It uses d3.zoom and d3.tile to handle panning and zooming, while d3.geoMercator and d3.geoPath render the vector overlay from a TopoJSON trail file. The map loads earthquake and bike-share data from external JSON sources, with tiles dynamically fetched during zoom events.

AAnaMal08