Built with blockbuilder.org
Created
November 7, 2018 06:19
-
-
Save AndriiShtoiko/ac809948d9088518e03e53bcd6a153c3 to your computer and use it in GitHub Desktop.
bar chart scale
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| license: mit |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| <!DOCTYPE html> | |
| <head> | |
| <meta charset="utf-8"> | |
| <script src="https://d3js.org/d3.v4.min.js"></script> | |
| <style> | |
| body { | |
| margin:0; | |
| position:fixed; | |
| top:0; | |
| right:0; | |
| bottom:0; | |
| left:0; | |
| } | |
| .bordered { | |
| border: 1px solid #999 | |
| } | |
| .margin-div { | |
| margin: 20px 0; | |
| } | |
| </style> | |
| </head> | |
| <body> | |
| <div> | |
| <svg id='svg'/> | |
| </div> | |
| <script> | |
| // NEW LESSON ************************************************* | |
| setTimeout(() => { | |
| let city = 'San Francisco'; | |
| let width = 700; | |
| let height = 300; | |
| let margin = { | |
| top: 20, | |
| bottom: 20, | |
| left: 20, | |
| right: 20, | |
| }; | |
| let svg = d3.select('svg') | |
| .attr('class', 'bordered') | |
| .attr('height', height) | |
| .attr('width', width) | |
| // Generate dummy data **************** | |
| let months = 6; | |
| let days; | |
| let data = []; | |
| while (months > 0) { | |
| days = 30; | |
| while(days > 0) { | |
| data.push({ | |
| date: new Date('2018-' + months + '-' + days), | |
| [city]: Math.round(35 * Math.random()) + 15 | |
| }) | |
| --days | |
| } | |
| --months | |
| } | |
| // console.log(data); | |
| // Finish Generate dummy data ********* | |
| // scalse | |
| let xExtent = d3.extent(data, d => d.date) | |
| // console.log(xExtent); | |
| let xScale = d3.scaleTime() | |
| .domain(xExtent) | |
| .range([margin.left, width - margin.right]); | |
| let yMax = d3.max(data, d=> d[city]); | |
| let yExtent = d3.extent(data, d=> d[city]); | |
| // console.log(yExtent); | |
| let yScale = d3.scaleLinear() | |
| .domain([0, yMax]) | |
| .range([height - margin.bottom, margin.top]) | |
| // console.log(yScale(25)) | |
| let heightScale = d3.scaleLinear() | |
| .domain([0, yMax]) | |
| .range([0, height - margin.top - margin.bottom]) | |
| let rect = svg.selectAll('rect') | |
| .data(data) | |
| .enter().append('rect') | |
| .attr('width', 2) | |
| .attr('height', d => heightScale(d[city])) | |
| .attr('x', d => xScale(d.date)) | |
| .attr('y', d => yScale(d[city])) | |
| .attr('fill', 'blue') | |
| .attr('stroke', '#fff') | |
| // let line = d3.line() | |
| // .x(d => xScale(d.date)) | |
| // .y(d => yScale(d[city])) | |
| // .curve(d3.curveStep) | |
| // svg.append('path') | |
| // .attr('d', line(data)) | |
| // .attr('fill', 'none') | |
| // .attr('stroke', 'blue') | |
| let xAxis = d3.axisBottom() | |
| .scale(xScale) | |
| let yAxis = d3.axisLeft() | |
| .scale(yScale) | |
| svg.append('g') | |
| .attr('transform', 'translate('+[0, height - margin.bottom]+')') | |
| .call(xAxis) | |
| svg.append('g') | |
| .attr('transform', 'translate('+[margin.left, 0]+')') | |
| .call(yAxis) | |
| }, 10) | |
| </script> | |
| </body> |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment