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xxxxxxxxxx<meta charset="utf-8"><style> /* set the CSS */body { font: 12px Arial;}path { stroke: steelblue; stroke-width: 2; fill: none;}.axis path,.axis line { fill: none; stroke: grey; stroke-width: 1; shape-rendering: crispEdges;}</style><body><!-- load the d3.js library --> <script src="https://d3js.org/d3.v3.min.js"></script><script>// Set the dimensions of the canvas / graphvar margin = {top: 30, right: 20, bottom: 30, left: 50}, width = 600 - margin.left - margin.right, height = 270 - margin.top - margin.bottom; // Parse the date / timevar parseDate = d3.time.format("%d-%b-%y").parse bisectDate = d3.bisector(function(d) { return d.date; }).left, formatDate = d3.time.format("%d-%b"), formatValue = d3.format(",.2f"), formatCurrency = function(d) { return "" + formatValue(d); };//var parseDate = d3.time.format("%H:%M").parse;// Set the rangesvar x = d3.time.scale().domain([new Date(2014, 0, 1), new Date(2015, 11, 31)]).range([0, width]);var y = d3.scale.linear().range([height, 0]);var color = d3.scale.category10();// Define the axesvar xAxis = d3.svg.axis().scale(x) .orient("bottom") .ticks(5) .ticks(d3.time.months) //.tickSize(16, 0) .tickFormat(d3.time.format("%b"));var yAxis = d3.svg.axis().scale(y) .orient("left").ticks(5);// Define the linevar valueline = d3.svg.line() .x(function(d) { return x(d.date); }) .y(function(d) { return y(d.close); }); //how to approcach null valuevar line = d3.svg.line() line.defined(function(d) { return d.y!=null; }); // Adds the svg canvasvar 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("test.csv", function(error, data) { data.forEach(function(d) { d.date = parseDate(d.date); d.close = +d.close; }); // 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.close; })]); // Nest the entries by symbol /*var dataNest = d3.nest() .key(function(d) {return d.symbol;}) .entries(data); var color = d3.scale.category10(); // set the colour scale // Loop through each symbol / key dataNest.forEach(function(d) { svg.append("path") .attr("class", "line") .style("stroke", function() { // Add dynamically return d.color = color(d.key); }) .attr("d", valueline(d.values)); });*/ // Add the valueline path. svg.append("path") .attr("class", "line") .attr("d", valueline(data)); // Add the X Axis svg.append("g") .attr("class", "x axis") .attr("transform", "translate(0," + height + ")") .call(xAxis) .append("text") .attr("fill", "#000") .attr("transform", "rotate(-90)") .attr("y", 200) .attr("dy", "0.71em"); svg.append("text") .attr("transform", "translate(" + (width / 2) + " ," + (height + margin.bottom) + ")") .style("text-anchor", "middle") .text("Date"); // Add the Y Axis svg.append("g") .attr("class", "y axis") .call(yAxis) .append("text") .attr("fill", "#000") .attr("transform", "rotate(-360)") .attr("transform", "translate(" + width + ",0)") .attr("y", 6) .attr("dy", "0.120em"); // Add the text label for the Y axis svg.append("text") .attr("transform", "rotate(-90)") .attr("y", 0 - margin.left) .attr("x",0 - (height / 2)) .attr("dy", "1em") .style("text-anchor", "middle") .text(""); var focus = svg.append("g") .attr("class", "focus") .style("display", "none"); focus.append("circle") .attr("r", 4.5); focus.append("text") .attr("x", 9) .attr("dy", ".35em"); // append the x line focus.append("line") .attr("class", "x") .style("stroke", "blue") .style("stroke-dasharray", "3,3") .style("opacity", 0.5) .attr("y1", 0) .attr("y2", height); // append the y line focus.append("line") .attr("class", "y") .style("stroke", "blue") .style("stroke-dasharray", "3,3") .style("opacity", 0.5) .attr("x1", width) .attr("x2", width); // append the circle at the intersection focus.append("circle") .attr("class", "y") .style("fill", "none") .style("stroke", "blue") .attr("r", 4); // place the value at the intersection focus.append("text") .attr("class", "y1") .style("stroke", "white") .style("stroke-width", "3.5px") .style("opacity", 0.8) .attr("dx", 8) .attr("dy", "-.3em"); focus.append("text") .attr("class", "y2") .attr("dx", 8) .attr("dy", "-.3em"); // place the date at the intersection focus.append("text") .attr("class", "y3") .style("stroke", "white") .style("stroke-width", "3.5px") .style("opacity", 0.8) .attr("dx", 8) .attr("dy", "1em"); focus.append("text") .attr("class", "y4") .attr("dx", 8) .attr("dy", "1em"); svg.append("rect") .attr("class", "overlay") .attr("width", width) .attr("height", height) .style("fill", "none") // ********** .style("pointer-events", "all") .on("mouseover", function() { focus.style("display", null); }) .on("mouseout", function() { focus.style("display", "none"); }) .on("mousemove", mousemove); focus.select("circle.y") .attr("transform", "translate(" + x(d.date) + "," + y(d.close) + ")"); focus.select("text.y1") .attr("transform", "translate(" + x(d.date) + "," + y(d.close) + ")") .text(d.close); focus.select("text.y2") .attr("transform", "translate(" + x(d.date) + "," + y(d.close) + ")") .text(d.close); focus.select("text.y3") .attr("transform", "translate(" + x(d.date) + "," + y(d.close) + ")") .text(formatDate(d.date)); focus.select("text.y4") .attr("transform", "translate(" + x(d.date) + "," + y(d.close) + ")") .text(formatDate(d.date)); focus.select(".x") .attr("transform", "translate(" + x(d.date) + "," + y(d.close) + ")") .attr("y2", height - y(d.close)); focus.select(".y") .attr("transform", "translate(" + width * -1 + "," + y(d.close) + ")") .attr("x2", width + width); function mousemove() { var x0 = x.invert(d3.mouse(this)[0]), i = bisectDate(data, x0, 1), d0 = data[i - 1], d1 = data[i], d = x0 - d0.date > d1.date - x0 ? d1 : d0; focus.attr("transform", "translate(" + x(d.date) + "," + y(d.close) + ")"); focus.select("text").text(formatCurrency(d.close)); } });</script></body> Modified http://d3js.org/d3.v3.min.js to a secure url
https://d3js.org/d3.v3.min.js