Van Wijk & Nuij Zooming

van Wijk Smooth Zooming

A hexbin mesh forms the backdrop as two circular markers—a brown start point and a steelblue end point—define a zoom transition. The view continuously interpolates between these two camera positions using `d3.interpolateZoom`, which smoothly scales and translates the entire SVG group. The animation runs in an infinite loop, reversing direction each time it reaches a marker. The code builds the mesh from `d3.hexbin` and applies the zoom tween via `attrTween` on the group's transform.

73% match

van Wijk Smooth Zooming

This example demonstrates smooth zooming transitions between two positions and scales over a static hexbin mesh. The visualization uses `d3.interpolateZoom` to interpolate between two center coordinates and zoom levels, with an SVG `g` element animated via `transition.attrTween`. The code renders a hexagonal grid mesh using the d3.hexbin library, with circular markers highlighting the start and end points. The animation loops indefinitely, alternating direction between the two views, and uses the `transform` function to calculate the appropriate translation and scaling for each frame.

FFrissAnalytics

72% match

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.

71% match

Map Pan & Zoom I

A black-and-white world map renders on a light gray background using the Mercator projection. This example demonstrates map panning and zooming through the `d3.behavior.zoom` API, which applies SVG transforms to a group containing the geographic paths. The map is built from TopoJSON world data with `d3.geo.path`, and the zoom scale is limited to 1–8×. A transparent overlay rect captures pointer events, enabling the interactive behavior.

70% match

MB zoom circles in and out

This example demonstrates a zoomable map interface where clicking a circle smoothly scales and pans the view to center on that circle, with a reset option to return to the initial state. It uses D3 v4 with SVG rendering and animation, relying on `d3.zoom` and `d3.zoomIdentity` for transform handling and `transition.call(zoom.transform)` for the animated effect. The data is a static array of circle objects with coordinates, radius, and colors, while a topojson feature layer provides the underlying map context. The background rectangle enables click-to-reset functionality, and strokes adjust dynamically based on zoom scale.

IIgathi

Map Zooming

This example demonstrates a map zooming animation that alternates between San Francisco and New York, using D3’s zoom transitions. The code renders simplified U.S. state boundaries on a Canvas element via `d3.geo.path` with a custom `d3.geo.transform` for adaptive simplification. It uses `d3.behavior.zoom` to compute translations and scales, and `topojson.presimplify` to preprocess the TopoJSON data source. The continuous back-and-forth zoom is driven by chained transitions with a repeating `jump` function.

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.

Basic Map Zooming

This example demonstrates how d3-zoom can be used to add pan and zoom interactions to a map. The map shows the states of India, rendered as SVG paths using an azimuthal equal-area projection and TopoJSON data. Each state is filled with a distinct color from a categorical palette, and hovering highlights the state by raising it above its neighbors and applying a thicker stroke. The zoom behavior, constrained to a scale range of 1–8× and bounded by the viewport, is applied directly to the SVG element, with a transform on the group containing all map paths. The window resize handler recalculates the projection’s fit and updates the translate extent, demonstrating how d3-zoom integrates with dynamic map projections.

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