Heatmap with tooltip

100%

Heatmap with tooltip

✓ Published0🌍 Public

Last edited Jul 27, 2021

Created on Jul 27, 2021

This example shows a 10x10 heatmap with a custom tooltip that reveals the exact value of each cell on hover. The data is loaded from a CSV file and rendered as colored squares, with a linear color scale mapping values from white to teal. Built with D3 version 6, the visualization uses `d3.scaleBand` for axes, `d3.scaleLinear` for the color encoding, and event listeners for mouse interactions. The tooltip is a styled HTML div appended to the page, positioned using the event’s coordinates and updated on mousemove.

AI-generated description

A demonstration of how to start using D3 version 6.

MIT Licensed

Similar vizzes

Loading thumbnail…

Heatmap with Tooltip in React

A heatmap displays a 10x10 matrix of values as colored squares, using a white-to-teal linear scale to represent the data range from 1 to 100. The visualization is rendered as an SVG chart using React components, D3.js scales (scaleBand, scaleLinear), and data loaded from a CSV file via d3.csv. Hovering over a square toggles its border and reveals the exact value in bold text, implemented through React's useState hook for interactive tooltips.

LLewis Ward

88% match

Loading thumbnail…

D3 Gallery tooltip example

This example shows a heatmap of the `heatmap_data.csv` dataset, with each cell colored according to its value using the `d3.scaleSequential` interpolator with the Inferno color scheme. Hovering over a cell triggers a tooltip that displays the exact value of that cell, implemented via mouse events and the `d3.select` API. The SVG rendering includes axes built with `d3.axisBottom` and `d3.axisLeft`, and the tooltip's position is set using `d3.mouse`.

Mma-jacobs

82% match

Loading thumbnail…

Heatmap with D3 Overlay

This example displays a heatmap of 100 data points across 10 variables and 10 groups, with each cell colored on a teal-to-green gradient using d3.scaleLinear. A large white "D3" text overlay is positioned at the center of the SVG canvas, creating a visual watermark effect. The React component loads CSV data via d3.csv and renders the chart using d3.scaleBand for axes and SVG rect elements. The overlay text is drawn directly within the same SVG group, demonstrating how to combine data-driven visualizations with static annotations in a React-D3 workflow.

LLewis Ward

82% match

Loading thumbnail…

Example of Heatmap using D3 with React

This heatmap displays a 10-by-10 grid of values using a white-to-teal linear color scale (`d3.scaleLinear`) mapped from a CSV dataset loaded via `d3.csv`. The graphic uses React to render SVG rectangles for each cell, with `d3.scaleBand` positioning the rows and columns. Axis labels for groups (A–J) and variables (v1–v10) are drawn as SVG text elements. The full window is filled with the visualization, and the chart includes a title above the plot area.

LLewis Ward

82% match

Loading thumbnail…

Heat Map

A 5x5 heat map visualizes numeric values from a CSV file as colored squares, using a quantile scale with a sequential orange colormap to encode values from 1 to 20. The SVG rendering employs d3.csv for data loading, d3.scaleQuantile for color mapping, and d3.axisRight and d3.axisBottom to display axes. A tooltip appears on mouseover, showing the exact value of each cell.

CChai94

80% match

Loading thumbnail…

Heatmap D3 random

This example shows a 50-by-50 heatmap with randomly generated values, where each cell’s color scales from light teal to dark green. It renders as an SVG using React, with d3.scaleBand for x and y positioning and d3.scaleLinear for the color range. The data is created in-memory via Math.random, and the chart fills the entire browser window.

LLewis Ward

79% match

Loading thumbnail…

MouseOver SVG Color Change

This example displays a heatmap of categorical data, with groups (A-J) on the x-axis and variables (v1-v10) on the y-axis, colored by a linear scale from white to teal. The React component fetches CSV data via `d3.csv` and renders it using SVG, though it currently only draws a black background. The `d3.scaleBand` and `d3.scaleLinear` functions define the axes and color mapping, while a mouse enter handler attempts to change the background color, serving as a minimal interactive demonstration.

LLewis Ward

78% match

Loading thumbnail…

Heatmap

This heatmap shows monthly values across five years, with a white-to-orange color scale indicating magnitude from 0 to 2. Rendering as SVG, the visualization uses d3.scaleBand for month and year axes, d3.scaleLinear for color encoding, and d3.csv to load the heatmap.csv data. A tooltip appears on hover, displaying the exact cell value via mouseover, mousemove, and mouseleave handlers.

Pprateekvasi

77% match