标签:append margin create values transform value har form color
Most charts aren’t complete without axes to provide context and labeling for the graphical elements being displayed. This lesson introduces D3’s APIs for creating, customizing, and displaying axes while building on topics from previous lessons.
var margin = { top: 10, right: 20, bottom: 60, left: 25 }; var width = 425 - margin.left - margin.right; var height = 625 - margin.top - margin.bottom; var svg = d3.select(‘.chart‘) .append(‘svg‘) .attr(‘width‘, width + margin.left + margin.right) .attr(‘height‘, height + margin.top + margin.bottom) .append(‘g‘) .attr(‘transform‘, `translate(${margin.left}, ${margin.top})`); svg.append(‘rect‘) .attr(‘width‘, width) .attr(‘height‘, height) .style(‘fill‘, ‘lightblue‘) .style(‘stroke‘, ‘green‘); /** * Create Y axis */ // Set scale const yScale = d3.scaleLinear() .domain([0, 100]) .range([height, 0]); // add y-axis const yAxis = d3.axisLeft(yScale); // const yAxis = d3.axisLeft(yScale).ticks(10, ‘.1s‘); // If you want to add fine control about the ticks: // const yAxis = d3.axisLeft(yScale).tickValues([5,10,30,50,80,100]); // add to the svg svg.call(yAxis); /** * Create X axis */ const xScale = d3.scaleTime() .domain([new Date(2017, 6, 1), new Date(2017, 7, 1)]) .range([0, width]); //https://github.com/d3/d3-time const xAxis = d3.axisBottom(xScale) .ticks(d3.timeDay.every(4)) .tickSize(10) .tickPadding(15); svg.append(‘g‘) .attr(‘transform‘, `translate(0, ${height})`) .call(xAxis);
[D3] Create Chart Axes with D3 v4
标签:append margin create values transform value har form color
原文地址:http://www.cnblogs.com/Answer1215/p/7300735.html