D3 Proportional Symbols Map

100%

D3 Proportional Symbols Map

✓ Published0🌍 Public

Rragregory@dons.usfca.edu

Last edited Apr 15, 2025

Created on Apr 14, 2025

This proportional symbols map displays the cost index of US states using circles positioned by geographic coordinates, with the ten most expensive states highlighted in red. The visualization uses D3 v7 with `d3.geoAlbersUsa` projection and topojson to render state boundaries, while a `d3.scaleSqrt` size scale maps cost index values to circle radii. Hover interactions reveal tooltips, and a legend explains the symbol scaling. Data is loaded from CSV and US Atlas TopoJSON sources.

AI-generated description

MIT Licensed

Similar vizzes

Loading thumbnail…

Proportional Symbols Map

This visualization shows a proportional symbols map of U.S. states, where circle size encodes each state’s cost index and the top nine highest-cost states appear in red. It uses D3 v7 with SVG rendering, a `d3.geoAlbersUsa` projection, and `d3.geoPath` for both state boundaries and symbol placement. A `d3.scaleSqrt` maps cost indices to circle radii. The code loads state polygons from us-states.json and point data from expensive-states.json, adding tooltips on mouse events.

Eeranyoung

94% match

Loading thumbnail…

A9 Proportional Symbols Map

This proportional symbols map displays transportation costs for U.S. states, with circle size scaled by each state’s cost index and red circles highlighting the top ten most expensive states. It renders via D3.js v7 using `d3.geoAlbersUsa`, `d3.geoPath`, and `topojson-client` to draw state boundaries, while `d3.scaleSqrt` maps cost values to circle radii. Hovering reveals a tooltip with the state name and cost. The legend indicates cost ranges, and the underlying CSV data provides geographic coordinates.

Hhxu51@usfca.edu

93% match

Loading thumbnail…

A9-Proportional Symbols Map

This proportional symbols map visualizes the relative cost of living across US states, using the area of each circle to represent its cost index. Hot pink circles mark the top ten most expensive states, while purple circles denote all others. Built with D3 v7 and TopoJSON, it projects state boundaries using an Albers projection via `d3.geoPath` and scales circle radii with `d3.scaleSqrt`. Interactive tooltips appear on hover, displaying each state's name, cost index, and rank. The map overlays state outlines with data from a CSV of state cost indices.

Bbhavi.kenia@gmail.com

92% match

Loading thumbnail…

Proportional Symbols Map

A Proportional Symbols Map displays the cost index for each U.S. state, with larger circles indicating higher costs and the top ten states highlighted in red. The visualization uses a Mercator projection via `d3.geoMercator` and `d3.geoPath` to render state boundaries from a GeoJSON file. Circle radii are scaled from CSV data, and `d3.scaleThreshold` with `d3.schemeBlues` provides color encoding. The map is drawn in SVG with D3 v6, using `join()` to bind data points to circle elements and tooltips showing state names and cost values.

AAllen Ho

92% match

Loading thumbnail…

Proportional symbols

A proportional symbol map displays the cost-of-living rank for U.S. states using circles positioned by latitude and longitude. Circle size inversely reflects cost rank through a d3.scaleSqrt, with the most expensive state highlighted in red. The visualization is built with d3.v7, using a d3.geoAlbersUsa projection, and includes an interactive tooltip on mouseover. The underlying data comes from expensive_states.csv, and the chart renders as SVG.

KKwasi Acquaye

92% match

Loading thumbnail…

A9 Proportional Symbols Map D3

This map visualizes the costliness of states across the US, with each state’s centroid marked by a proportional circle whose size reflects its expense rank. The Albers USA projection renders the geographic backdrop, while the circles are colored to highlight distinctions. Built with D3 v7 and the TopoJSON library, it uses `d3.geoAlbersUsa()` and `d3.geoPath()` to draw the map. An interactive tooltip appears on hover, displaying details about each state.

Nnathanjmuljadi@gmail.com

92% match

Loading thumbnail…

A9: D3 Proportional Symbol Map

This proportional symbol map shows the relative cost of living across US states using colored circles sized by each state’s cost index, with tooltips on hover. The visualization loads US state boundaries from a TopoJSON file via `d3.json` and `topojson.feature`, then plots the CSV data points using `d3.geoAlbersUsa` and `d3.geoPath`. Circle radius and fill color are scaled with `d3.scaleSqrt` and `d3.scaleLinear`, respectively. It uses D3 v7 with SVG rendering, a color legend, and animated opacity and stroke transitions for interactive highlighting.

Rronnieferrufino4908@gmail.com

91% match

Loading thumbnail…

Proportional symbols map

This proportional symbols map overlays circles on a U.S. state map to visualize grocery cost indices, with the ten most expensive states highlighted in red and a legend showing cost values. The visualization uses D3 v3’s `d3.geo.path`, TopoJSON, and a queue to load map boundaries, state centroids, and cost data. Point radii are scaled with `d3.scale.sqrt`, and hovering a circle triggers a tooltip, dims other symbols, and uses an SVG transition for emphasis.

Vvishusikka

91% match