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d3-brush

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d3-brush

Select a one- or two-dimensional region using the mouse or touch.

  • 3.0.0
  • latest
  • Source
  • npm
  • Socket score

Version published
Weekly downloads
2.5M
decreased by-18.57%
Maintainers
2
Weekly downloads
 
Created

What is d3-brush?

The d3-brush module is part of the D3.js library and provides tools for creating interactive brushing and linking in visualizations. Brushing allows users to select a region of a chart or graph, which can then be used to highlight or filter data.

What are d3-brush's main functionalities?

Basic Brush

This code sets up a basic brush on an SVG element. When the user interacts with the brush, the 'brushed' function is called, logging the selected region.

const svg = d3.select('svg');
const brush = d3.brush().on('brush', brushed);
svg.append('g').attr('class', 'brush').call(brush);
function brushed(event) {
  const selection = event.selection;
  console.log(selection);
}

Brush with Custom Handle

This code demonstrates how to create a brush with a custom handle size. The handle size is set to 10 pixels.

const svg = d3.select('svg');
const brush = d3.brush().handleSize(10).on('brush', brushed);
svg.append('g').attr('class', 'brush').call(brush);
function brushed(event) {
  const selection = event.selection;
  console.log(selection);
}

Brush with Extent

This code sets up a brush with a specified extent, limiting the brushable area to a 400x400 pixel region.

const svg = d3.select('svg');
const brush = d3.brush().extent([[0, 0], [400, 400]]).on('brush', brushed);
svg.append('g').attr('class', 'brush').call(brush);
function brushed(event) {
  const selection = event.selection;
  console.log(selection);
}

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Package last updated on 10 Jun 2021

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