Voronoi Overlay with Labels

Voronoi Overlay with Labels

A multi-line chart displays cumulative COVID-19 deaths over time for multiple countries, using a logarithmic y-axis. On hover, a Voronoi overlay from `d3.Delaunay` highlights the nearest data point and activates the corresponding country’s line, displaying a tooltip with the country name, death count, and date. The visualization is built in React with d3 scales, line generators, and axes, rendering to SVG. Data comes from the CSSE COVID-19 time series.

SSerind Joshua McCue

Voronoi Overlay With Labels

This example displays cumulative global COVID-19 deaths over time for multiple countries using a log-scaled line chart. Hovering over any line reveals a tooltip with the country name, death count, and date, while the active line is highlighted. The chart uses React with d3.v5’s `scaleTime`, `scaleLog`, and `line` generators, and implements a Voronoi overlay via `d3.Delaunay.from` and `voronoi.renderCell` to capture mouse events across the SVG. Data comes from the CSSE COVID-19 global time-series dataset, loaded with `d3.csv`.

KKazushige Okuma

Voronoi Overlay with Labels

A multi-line chart displays cumulative COVID-19 deaths over time for multiple countries, with a logarithmic y-axis. A Voronoi overlay, built with `d3.Delaunay`, captures mouse hover events across the chart area, highlighting the nearest data point and its corresponding line. A tooltip with country name, death count, and date follows the cursor, while the active series is emphasized. Data comes from the CSSE COVID-19 time series, rendered as SVG in React using d3 scales and axes.

MMichael Bruno

Voronoi Overlay With Labels

This example shows a multi-series line chart of cumulative COVID-19 deaths per country over time. A Voronoi overlay, built with `d3.Delaunay` and `d3.voronoi`, captures mouse hover events across the SVG, highlighting the nearest data point and its corresponding country line. The chart uses a logarithmic Y-axis and a time-scaled X-axis, with a tooltip labeling the active country, death count, and date. Data comes from the CSSE COVID-19 global time-series dataset, rendered using React and D3 v7.

AAlex Stulov

Voronoi Overlay with Labels

This line chart displays cumulative global coronavirus deaths over time by country, using a log-scaled y-axis and data from the Johns Hopkins Coronavirus Dataset. Hovering over any point on the chart highlights the corresponding country’s entire line and shows a tooltip with the country name, death count, and date. The implementation uses React with d3.scaleTime, d3.scaleLog, and d3.line for the visualization, while a Voronoi overlay built with d3.Delaunay and d3.delaunay.voronoi captures mouse interactions, rendering cells as SVG paths with pointer-events enabled.

DDiavek

Voronoi Overlay with Labels

A multi-line chart tracks cumulative COVID-19 deaths over time for multiple countries, with a logarithmic y-axis and interactive hovering. A Voronoi overlay computed with `d3.Delaunay` divides the chart into cells that trigger hover events, highlighting the nearest date’s data point and displaying a tooltip with the country name, death total, and date. The tooltip is rendered as SVG text, and the active country’s line is emphasized. Data comes from the CSSE COVID-19 time series, parsed via `d3.csv` and `timeParse`.

BBen Brophy

Voronoi Overlay with Labels

A line chart displays global coronavirus deaths over time for multiple countries on a logarithmic y-scale, with a Voronoi overlay enabling mouse-based highlighting of the nearest data point and its corresponding country line. The chart uses React with D3 v5 scales and line generators, while the overlay leverages `d3.Delaunay` and `d3.voronoi` to compute cell regions for hover detection. Data comes from the Johns Hopkins Coronavirus dataset, rendered as SVG paths with axes and gridlines.

Wwindwaver

Voronoi Overlay with Labels

This visualization charts global COVID-19 death tolls over time, with each country's cumulative deaths represented as a line on a log-scaled Y-axis. It uses a Voronoi overlay generated via `d3.Delaunay` and `voronoi.renderCell` to partition the chart space, making each line segment easily hoverable. When a user hovers over a point, the corresponding country's line is highlighted in black, and a label appears showing the country name, total deaths, and date. The interactive labels are implemented in React with SVG rendering, and the data is loaded from the CSSEGISandData COVID-19 global time series CSV.

KKevin McMorrow