This is an adaption of the same subject, but using JSON
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June 22, 2017 15:25
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D3 - Basic Barchart - uses modern function calls
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| [{ | |
| "date": "Bob", | |
| "edits": 32 | |
| }, { | |
| "date": "Robin", | |
| "edits": 12 | |
| }, { | |
| "date": "Anne", | |
| "edits": 24 | |
| }, { | |
| "date": "Mark", | |
| "edits": 8 | |
| }, { | |
| "date": "Joe", | |
| "edits": 19 | |
| }, { | |
| "date": "Eve", | |
| "edits": 16 | |
| }, { | |
| "date": "Karen", | |
| "edits": 12 | |
| }, { | |
| "date": "Kristy", | |
| "edits": 31 | |
| }, { | |
| "date": "Chris", | |
| "edits": 42 | |
| }, { | |
| "date": "Lisa", | |
| "edits": 57 | |
| }, { | |
| "date": "Tom", | |
| "edits": 23 | |
| }, { | |
| "date": "Stacey", | |
| "edits": 14 | |
| }, { | |
| "date": "Charles", | |
| "edits": 12 | |
| }, { | |
| "date": "Mary", | |
| "edits": 2 | |
| }] |
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| <!DOCTYPE html> | |
| <meta charset="utf-8"> | |
| <style> /* set the CSS */ | |
| .bar { fill: steelblue; } | |
| </style> | |
| <body> | |
| <!-- load the d3.js library --> | |
| <script src="//d3js.org/d3.v4.min.js"></script> | |
| <script> | |
| // set the dimensions and margins of the graph | |
| var margin = {top: 20, right: 20, bottom: 30, left: 40}, | |
| width = 960 - margin.left - margin.right, | |
| height = 500 - margin.top - margin.bottom; | |
| // set the ranges | |
| var x = d3.scaleBand() | |
| .range([0, width]) | |
| .padding(0.1); | |
| var y = d3.scaleLinear() | |
| .range([height, 0]); | |
| // append the svg object to the body of the page | |
| // append a 'group' element to 'svg' | |
| // moves the 'group' element to the top left margin | |
| var svg = d3.select("body").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 + ")"); | |
| // get the data | |
| d3.json("edits.json", (error, data) => { | |
| if (error) throw error; | |
| // format the data | |
| data.forEach(d => d.edits = +d.edits); | |
| // Scale the range of the data in the domains | |
| x.domain(data.map(d => d.date )); | |
| y.domain([0, d3.max(data, d => d.edits)]); | |
| // append the rectangles for the bar chart | |
| svg.selectAll(".bar") | |
| .data(data) | |
| .enter().append("rect") | |
| .attr("class", "bar") | |
| .attr("x", d => x(d.date)) | |
| .attr("width", x.bandwidth()) | |
| .attr("y", d => y(d.edits)) | |
| .attr("height", d => height - y(d.edits)); | |
| // add the x Axis | |
| svg.append("g") | |
| .attr("transform", "translate(0," + height + ")") | |
| .call(d3.axisBottom(x)); | |
| // add the y Axis | |
| svg.append("g") | |
| .call(d3.axisLeft(y)); | |
| }); | |
| </script> | |
| </body> |
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