This line chart is constructed from a TSV file storing the daily average temperatures of New York, San Francisco and Austin over the last year. The chart employs conventional margins and a number of D3 features:
forked from mbostock's block: Multi-Series Line Chart
xxxxxxxxxx<meta charset="utf-8"><style>.line {fill: none;stroke: orange;stroke-width: 3.5px;}</style><body><script src="https://d3js.org/d3.v4.min.js"></script><script>// set the dimensions and margins of the graphvar margin = {top: 50, right: 20, bottom: 100, left: 50}, width = 700 - margin.left - margin.right, height = 400 - margin.top - margin.bottom;// parse the date / timevar parseTime = d3.timeParse("%m/%d/%y");// set the rangesvar x = d3.scaleTime().range([0, width]);var y = d3.scaleLinear().range([height, 0]);// define the linevar valueline = d3.line() .x(function(d) { return x(d.date); }) .y(function(d) { return y(d.IncidntNum); });// append the svg obgect to the body of the page// appends a 'group' element to 'svg'// moves the 'group' element to the top left marginvar 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 datad3.csv("data.csv", function(error, data) { if (error) throw error; // format the data data.forEach(function(d) { d.IncidntNum = +d.IncidntNum; d.date = parseTime(d.date); }); // Scale the range of the data x.domain(d3.extent(data, function(d) { return d.date; })); y.domain([0, d3.max(data, function(d) { return d.IncidntNum; })]); // Add the valueline path. svg.append("path") .data([data]) .attr("class", "line") .attr("d", valueline); // Add the X Axis svg.append("g") .attr("transform", "translate(0," + height + ")") .call(d3.axisBottom(x).tickFormat(d3.timeFormat("%m/%d"))); // Add the Y Axis svg.append("g") .call(d3.axisLeft(y)); svg.append("text") .attr("x", (0)) .attr("y", -5 - (margin.top/2) ) .style("font-size", "16px") .style("font-family", "Avenir") .text("Line graph showing the number of incidents of a week" + "in December 2016");//x axis label for "date" svg.append("text") .attr("class", "x label") .attr("text-anchor", "end") .attr("x", width/2) .attr("y", height + 40) .style("font-family", "Avenir") .style("font-size", "12px") .text("Date"); svg.append("text") .attr("class", "y label") .attr("text-anchor", "end") .attr("y", -45) .attr("x", -120) .attr("dy", ".75em") .attr("transform", "rotate(-90)") .style("font-family", "Avenir") .style("font-size", "10px") .text("Number of assaults"); //Caption svg.append("text") .attr("class", "x label") .attr("text-anchor", "end") .attr("x", width + 1000) .attr("y", height + 80) .style("font-family", "Avenir") .style("font-size", "12px") .text("It seems that the lowest number of physical assaults in this" + "week was on a Sunday and Wednesday.While the other days were" + "relatively high. Although it seems the thursday (12/1) was quite low," + "but the following thursday the number of assaults became relatively" + "high just like the other days." + " " + "Line graph by Sherry Feng");});</script></body> https://d3js.org/d3.v4.min.js