Map Pan & Zoom I

Map Pan & Zoom II

This example demonstrates interactive pan and zoom on a world map using a dynamic Mercator projection. The map renders country landmasses as black paths, with white boundaries and a light gray sphere background, all within an SVG element. Using the `d3.behavior.zoom` API, user drag or scroll actions trigger reprojection and redraw the geospatial data via `d3.geo.path`. The underlying geographic data is loaded as JSON from a gist, and the projection translates and scales dynamically with each zoom event.

90% match

Map Pan and Zoom v7

This example displays a world map centered on the Pacific Ocean, rendered as SVG paths filled in grey with white borders. Using the d3.geoMercator projection and d3.geoPath, it draws country boundaries from a TopoJSON file loaded via d3.json. The d3.zoom module provides interactive pan and zoom controls, applying the resulting transform directly to the map’s path elements within a scale extent of 1 to 8.

88% match

World Map with zoom and pan

This example displays a world map rendered as gray SVG paths with white borders, centered on a Mercator projection. Users can pan and zoom the map via mouse interactions, with the view transform updating dynamically. The map data comes from the `world-110m2.json` TopoJSON file, processed using `topojson.object`, while D3’s `d3.geo.path` and `d3.behavior.zoom` handle the projection and interactive behavior.

88% match

Map Pan & Zoom III

A world map rendered on a Canvas element supports pan and zoom interactions via the d3.behavior.zoom API. The map uses pre-projected geographic geometry from a TopoJSON file, with d3.geo.path using a null projection so that only the canvas transform changes during zoom, avoiding re-projection. Country boundaries and land masses are drawn as filled and stroked paths, with strokes scaled inversely to maintain constant width.

88% match

Map Pan and Zoom v6

This example demonstrates an interactive world map that supports panning and zooming, centered on the Pacific Ocean. The map renders country boundaries as SVG paths filled with grey, using the `d3.geoMercator` projection and `d3.geoPath` to generate the geometry. A `topojson` data file supplies the world topology. The `d3.zoom` API applies a transform to the SVG group containing the paths, with a scale range between 1x and 8x, enabling the user to explore the map.

87% match

Map Pan and Zoom v5

This map of the world centers on the Pacific Ocean and lets users pan and zoom. It uses a Mercator projection via `d3.geoMercator` and renders country boundaries as SVG paths from TopoJSON data. The `d3.zoom` behavior applies a transform to the path group, enabling interactive navigation with a scale extent of 1 to 8.

87% match

Map Pan & Zoom IV

This example demonstrates fast map panning and zooming on a Canvas. It uses pre-projected geometry from a `world.json` file, rendered via d3.geo.path. Pan and zoom use `d3.behavior.zoom`, with dynamic simplification via a custom `d3.geo.transform` and viewport clipping via `d3.geo.clipExtent`. The map shows country boundaries and a sphere outline.

85% match

Constrained Zoom

This example displays a world map that users can pan and zoom, with the zoom behavior constrained so the map cannot be moved beyond its edges. The code uses d3.behavior.zoom with a custom zoom event handler that clamps the translation based on the current scale. Geographic data from a TopoJSON file is rendered using d3.geo.path with a Mercator projection, and the map is drawn as SVG paths. The constraint formula adjusts the allowed translation range as the scale changes, preventing the map from leaving the viewport.