D3 Examples - Politican Last Names Line Chart real

Politican Last Names Line Chart real

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:

d3.tsv - load and parse data

d3.time.format - parse dates

d3.time.scale - x-position encoding

d3.scale.linear - y-position encoding

d3.scale.category10, a d3.scale.ordinal - color encoding

d3.extent, d3.min and d3.max - compute domains

d3.keys - compute column names

d3.svg.axis - display axes

d3.svg.line - display line shape

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<!DOCTYPE html>
<meta charset="utf-8">
<style>
​
.axis--x path {
  display: none;
}
​
.line {
  fill: none;
  stroke: steelblue;
  stroke-width: 1.5px;
}
  
.mylastname {
  fill: none;
  stroke: black;
  stroke-width: 3px;
}
  
  
​
</style>
<svg width="960" height="500"></svg>
<script src="//d3js.org/d3.v4.min.js"></script>
<script>
​
var svg = d3.select("svg"),
    margin = {top: 20, right: 80, bottom: 30, left: 50},
    width = svg.attr("width") - margin.left - margin.right,
    height = svg.attr("height") - margin.top - margin.bottom,
    g = svg.append("g").attr("transform", "translate(" + margin.left + "," + margin.top + ")");
​
//var parseTime = d3.timeParse("%Y%m%d");
  var parseTime = d3.timeParse("%Y");
​
var x = d3.scaleTime().range([0, width]),
    y = d3.scaleLinear().range([height, 0]),
    z = d3.scaleOrdinal(d3.schemeCategory10);
​
var line = d3.line()
    .curve(d3.curveBasis)
    .x(function(d) { return x(d.date); })
    .y(function(d) { return y(d.count); });
​
//d3.tsv("data2.tsv", type, function(error, data) {
d3.csv("familiasFuertes.csv", type, function(error, data) {
  if (error) throw error;
​
  var lastnames = data.columns.slice(1).map(function(id) {
    return {
      id: id,
      values: data.map(function(d) {
        return {date: d.date, count: d[id]};
      })
    };
  });
  
 
  
​
  x.domain(d3.extent(data, function(d) { return d.date; }));
​
  y.domain([
    d3.min(lastnames, function(c) { return d3.min(c.values, function(d) { return d.count; }); }),
    d3.max(lastnames, function(c) { return d3.max(c.values, function(d) { return d.count; }); })
  ]);
​
  z.domain(lastnames.map(function(c) { return c.id; }));
​
  g.append("g")
      .attr("class", "axis axis--x")
      .attr("transform", "translate(0," + height + ")")
      .call(d3.axisBottom(x));
​
  g.append("g")
      .attr("class", "axis axis--y")
      .call(d3.axisLeft(y))
    .append("text")
      .attr("transform", "rotate(-90)")
      .attr("y",6)
      .attr("dy", "0.71em")
      .attr("fill", "#000")
      .text("# políticos");
​
  var lastname = g.selectAll(".lastname")
    .data(lastnames)
    .enter().append("g")
      .attr("class", "lastname");
​
  lastname.append("path")
      .attr("class", "line")
      .attr("d", function(d) { return line(d.values); })
      .style("stroke", function(d) { return z(d.id); });
​
  lastname.append("text")
      .datum(function(d) { return {id: d.id, value: d.values[d.values.length - 1]}; })
      .attr("transform", function(d) { return "translate(" + x(d.value.date) + "," + y(d.value.count) + ")"; })
      .attr("x", 3)
      .attr("dy", "0.35em")
      .style("font", "10px sans-serif")
      .text(function(d) { return d.id; });
});
  
//path("famliaGomez.tsv");
 path("data2.tsv");
  
  
/////
  ///// intento de otro path
/////
//d3.tsv("data2.tsv", type, function(error, data) {
function path(datos) 
{d3.tsv(datos, type, function(error, dato) {
  if (error) throw error;
​
  // var mypath datos leidos de mis datos
    /*var lastnames = function(d) {
    return {
            id: "miapell",
      values: dato.map(function(d) 
            { return {date: d.date, count: d.apellido};
                                    })
  }};*/
  
  var lastnames= dato.columns.slice(1).map(function(id) {
    return {
      id: id,
      values: dato.map(function(d) {
        return {date: d.date, count: d[id]};
      })
    };
  });
​
  x.domain(d3.extent(dato, function(d) { return d.date; }));
​
  y.domain([
    d3.min(lastnames, function(c) { return d3.min(c.values, function(d) { return d.count; }); }),
    d3.max(lastnames, function(c) { return d3.max(c.values, function(d) { return d.count; }); })
  ]);
​
  z.domain(lastnames.map(function(c) { return c.id; }));
/*
  g.append("g")
      .attr("class", "axis axis--x")
      .attr("transform", "translate(0," + height + ")")
      .call(d3.axisBottom(x));
​
  g.append("g")
      .attr("class", "axis axis--y")
      .call(d3.axisLeft(y))
    .append("text")
      .attr("transform", "rotate(-90)")
      .attr("y",6)
      .attr("dy", "0.71em")
      .attr("fill", "#000")
      .text("# políticos");
*/
  var mypath = g.selectAll(".mylastname")
    .data(lastnames)
    .enter().append("g")
      .attr("class", "mylastname");
​
  mypath.append("path")
      .attr("class", "line2")
      .attr("d", function(d) { return line(d.values); })
      .style("stroke", function(d) { return z(d.id); });
​
  mypath.append("text")
      .datum(function(d) { return {id: d.id, value: d.values[d.values.length - 1]}; })
      .attr("transform", function(d) { return "translate(" + x(d.value.date) + "," + y(d.value.count) + ")"; })
      .attr("x", 3)
      .attr("dy", "0.35em")
      .style("font", "10px sans-serif")
      .text(function(d) { return d.id; });
});
}
​
function type(d, _, columns) {
  d.date = parseTime(d.date);
  for (var i = 1,n = columns.length, c; i < n; ++i) d[c = columns[i]] = +d[c];
  return d;
}
​
</script>
​
    