TP2_D3

forked from romsson's block: simple line chart from dataset

forked from anonymous's block: simple line chart from dataset

<!DOCTYPE html>
<head>
  <meta charset="utf-8">
  <script src="https://d3js.org/d3.v4.min.js"></script>
  <style>
    .line {
      fill: none;
      stroke: black;
      stroke-width: 1.5px;
    }
    .hover-line {
            fill: none;
      stroke: black;
      stroke-width: 1.5px;
      stroke-dasharray: 3,3;
    }
  </style>
</head>

<body>
  <script>
    
    
    var svg = d3.select("body").append("svg")
      .attr("width", 960)
      .attr("height", 500);

var width = 800;
    var height = 400;
    // See formats https://bl.ocks.org/zanarmstrong/raw/05c1e95bf7aa16c4768e/
    // Data sample {"name": "G", "value": 10, "date": "2016-07"}
    var parseDate = d3.timeParse("%Y-%m");
    var displayDate = d3.timeFormat("%b %y");
    var displayValue = d3.format(",.0f");
    
    // Ordinal scale
    var x = d3.scaleTime()
        .range([0, width]);

// Linear scale
    var y = d3.scaleLinear()
        .range([height, height - 200]);

var line = d3.line()
        .x(function(d) { return x(d.date); })
        .y(function(d) { return y(d.value); });
    
    var g = svg.append("g")
            .attr("transform", "translate(50, 0)")
    
           d3.json("dataset.json", function(error, data) {
                  if (error) throw error;

// Pre-processing
      data.forEach(function(d) {
                                d.value = +d.value;
        d["date"] = parseDate(d["date"]);
      });
      
      x.domain(d3.extent(data, function(d) { return d.date; }));
                        y.domain([0, d3.max(data, function(d) { return d.value; })]);

svg.selectAll(".label").data(data).enter()
       .append("text")
              .attr("class", "label")
        .text(function(d, i) { return displayDate(d.date); })
        .attr("y", 420)
        .attr("x", function(d) { return x(d.date) + 25; })
        .style("font-size", 12)
        .style("font-family", "monospace");

//show values of the data 
       g.selectAll(".value").data(data).enter()
          .append("text")
          .text(function(d, i) { return displayValue(d.value); })
          .attr("id", "value")
          .attr("x", function(d) { return x(d.date)- 10; })
          .attr("y", function(d) { return y(d.value) - 20; })
          .style("font-size", 250)
          .style("font-family", "monospace")
          .style("opacity","0");

g.selectAll(".line").data([data]).enter().append("path")
        .attr("class", "line")
        .attr("d", line);
      
      // Add the scatterplot
             
    g.selectAll("dot")
        .data(data)
      .enter().append("circle")
        .attr("r", 12)
        .attr("cx", function(d) { return x(d.date); })
        .attr("cy", function(d) { return y(d.value); })
                    .style("fill", "black")
                    .style("opacity", "0.1")
            .on("mouseover", function(d, i) {
              d3.select(this).style("fill", "red")
                                                                       			  
						.style("opacity", "1");

d3.selectAll(".li").filter(function(e, j) {
          return i === j;
        })
        .transition().duration(350)
        .style("font-size", 20)
        .style("opacity","1");
             // Should be using Ids instead of values
              d3.selectAll("text").filter(function(e, j) {
          return i === j;
        })
        .transition().duration(350)
        .style("font-size", 20)
        .style("opacity","1");

})
            .on("mouseout", function(d, i) {
              d3.select(this).transition().duration(350).style("fill", "black")

.style("opacity", "0.1");

d3.selectAll(".li").filter(function(e, j) {
          return i === j;
        })
        .transition().duration(350)
        .style("font-size", 15)
        .style("opacity","0");
      
          // Should be using Ids instead of values
              d3.selectAll("text").filter(function(e, j) {
          return i === j;
        })
        .transition().duration(350)
        .style("font-size", 15)
        .style("opacity","0");
      
      
            });

g.selectAll("dot")
        .data(data).enter().append("line")
    									.attr("class" , "li")
                      .attr("x1", function (d) {
                          return x(d.date) ;
                        })
                      .attr("y1", function (d) {
                          return 400;
                        })
                      .attr("x2", function (d) {
                          return x(d.date);
                        })
                      .attr("y2", function (d) {
                          return y(d.value);
                        })
    
    									
                      .attr("stroke-width", 2)
                      .attr("stroke", "black")
    									.style("stroke-dasharray", ("3, 3")) 
    									.style("opacity", "0")

});

</script>
</body>

https://d3js.org/d3.v4.min.js