Created
September 27, 2020 18:22
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| var data = [ | |
| [ 400, 200 ], | |
| [ 210,140 ], | |
| [ 722,300 ], | |
| [ 70,160 ], | |
| [ 250,50 ], | |
| [ 110,280 ], | |
| [ 699,225 ], | |
| [ 90, 220 ] | |
| ]; | |
| var chart_width = 850; | |
| var chart_height = 400; | |
| var bar_padding = 50; | |
| //create the svg | |
| var svg = d3.select('#chart') | |
| .append('svg') | |
| .attr('height', chart_height) | |
| .attr('width', chart_width) | |
| //create the scales | |
| var x_scale = d3.scaleLinear() | |
| .domain([d3.min(data, function(d){ | |
| return d[0] | |
| }),d3.max(data, function(d){ | |
| return d[0] | |
| })]) | |
| .rangeRound([bar_padding, chart_width - bar_padding]) | |
| var y_scale = d3.scaleLinear() | |
| .domain([d3.min(data, function(d){ | |
| return d[1] | |
| }),d3.max(data, function(d){ | |
| return d[1] | |
| })]) | |
| //.rangeRound([bar_padding, chart_height - bar_padding]) | |
| .rangeRound([chart_height - bar_padding, bar_padding]) | |
| var r_scale = d3.scaleSqrt() | |
| .domain([d3.min(data, function(d){ | |
| return d[1] | |
| }),d3.max(data, function(d){ | |
| return d[1] | |
| })]) | |
| .rangeRound([5, 15]) | |
| //create an axis | |
| var x_axis = d3.axisBottom(x_scale) | |
| svg.append('g') | |
| .attr('class', 'x-axis') | |
| .attr('transform', 'translate(0, ' + (chart_height - bar_padding) + ')') | |
| .call(x_axis) | |
| var y_axis = d3.axisLeft(y_scale) | |
| .tickValues([100, 200, 300]) | |
| svg.append('g') | |
| .attr('class', 'y-axis') | |
| .attr('transform', 'translate(' + bar_padding + ', 0)') | |
| .call(y_axis) | |
| //.tickValues('100', '200', '300') | |
| //create the circles | |
| svg.selectAll('circle') | |
| .data(data) | |
| .enter() | |
| .append('circle') | |
| .attr('cx', function(d, i){ | |
| return x_scale(d[0]) | |
| }) | |
| .attr('cy', function(d){ | |
| return y_scale(d[1]) | |
| }) | |
| .attr('r', function(d){ | |
| return r_scale(d[1]) | |
| }) | |
| .attr('fill', function(d){ | |
| return 'rgb('+ Math.round(d[1] + 0.5) +',0,0)' | |
| //return "rgb(0, 0, " + Math.round(d[1] + 1) + ")" | |
| }) | |
| //create the labels | |
| svg.append('g') | |
| .selectAll('text') | |
| .data(data) | |
| .enter() | |
| .append('text') | |
| .text(function(d){ | |
| return d.join('-') | |
| }) | |
| .attr('x', function(d, i){ | |
| return x_scale(d[0]) + 10 | |
| }) | |
| .attr('y', function(d){ | |
| return y_scale(d[1]) | |
| }) | |
| /*.attr('r', function(d){ | |
| return r_scale(d[1]) | |
| })*/ | |
| .attr('fill', 'black') | |
| .attr('font-size', '12px') | |
| .attr('font-weight', 'bold') | |
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| <!DOCTYPE html> | |
| <html lang="en"> | |
| <head> | |
| <meta charset="UTF-8"> | |
| <title>D3 Scatter Plot</title> | |
| <link rel="stylesheet" type="text/css" href="style.css"> | |
| </head> | |
| <body> | |
| <div id="chart"></div> | |
| <script src="https://d3js.org/d3.v5.js"></script> | |
| <script src="app4.js"></script> | |
| </body> | |
| </html> |
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| #chart{ | |
| width: 850px; | |
| height: 400px; | |
| background-color: #f7f7f7; | |
| margin: 25px auto; | |
| } | |
| .x-axis path .x-axis line{ | |
| shape-rendering: crispEdges; | |
| } | |
| .x-axis text{ | |
| font-family: sans-serif; | |
| font-weight: bold; | |
| font-size: 16px; | |
| } | |
| .y-axis path .y-axis line{ | |
| shape-rendering: crispEdges; | |
| } | |
| .y-axis text{ | |
| font-family: sans-serif; | |
| font-weight: bold; | |
| font-size: 16px; | |
| } |
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