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HTML

              
                
<div class="main">
  <div class="content">
      <h1>@horse_js tweets over time</h1>
      <div class="content">
        <svg id="chart"></svg>        
      </div>    
  </div>
</div>

              
            
!

CSS

              
                html, body {
  background-color: #f5eeec;
  font-family: 'Karla', sans-serif;
}

.main {
  width: 100%;
  font: 10px sans-serif;
  display: flex;
  text-align: center;
}

h1 {
  font-size: 40px;
}

.content {
  margin: auto;
}

.horse-point {
  fill: rgba(224, 0, 120, 0.3)
}

.chart {
  margin-top: 100px;
  overflow: visible
}

.tweet {
  font: normal normal 14px/1.4 Helvetica,Roboto,"Segoe UI",Calibri,sans-serif;
  .tweet-header {
    .tweet-author {
      font-size: 13px;
      color: #6F7888;
    }
  }
  .tweet-body {
    margin-top: 14px;
  }
  time {
    font-size: 14px;
    color: #697888;
  }
}

.d3-tip {
  line-height: 1;
  font-weight: bold;
  padding: 12px;
  background: #fff;
  color: #333;
  border-radius: 5px;
  transition: opacity 0.2s ease-in-out;
  max-width: 400px;
}

/* Creates a small triangle extender for the tooltip */
.d3-tip:after {
  width: 100%;
  box-sizing: border-box;
  display: inline;
  font-size: 10px;
  line-height: 1;
  color: #fff;
  content: "\25BC";
  position: absolute;
  text-align: center;
}

/* Style northward tooltips specifically */
.d3-tip.n:after {
  margin: -2px 0 0 0;
  top: 100%;
  left: 0;
}

.d3-tip span {
  transition: scale 0.2s ease;
}

              
            
!

JS

              
                class ScatterPlot {
  constructor(el, options) {
    this.el = el;

    if (options) {
      this.data = options.data || [];
      this.tooltip = options.tooltip;
      this.pointClass = options.pointClass || '';
      
      
      this.data = options.data || [];
      this.width = options.width || 960;
      this.height = options.height || 500;

      this.render();
    }
  }

  render() {    
    let margin = { top: 20, right: 20, bottom: 50, left: 60 };
    let height = this.height - margin.bottom - margin.top;
    let width = this.width - margin.right - margin.left;
    let data = this.data;    

    // create the chart
    let chart = d3.select(this.el)
      .attr('width', width + margin.right + margin.left)
      .attr('height', height + margin.top + margin.bottom);
    
    
    // define the x-axis
    let minDateValue = d3.min(data, d => {
      return new Date(moment(d.created_at).format('MM-DD-YYYY'));
    });

    let maxDateValue = d3.max(data, d => {
      return new Date(moment(d.created_at).format('MM-DD-YYYY'));
    });

    let x = d3.scaleTime()
      .domain([minDateValue, maxDateValue])
      .range([0, width]);

    let xAxis = d3.axisBottom(x).tickFormat(d3.timeFormat('%b-%y'));
    
    
    // define y axis
    let minTimeValue = new Date().setHours(0, 0, 0, 0);
    let maxTimeValue = new Date().setHours(23, 59, 59, 999);

    let y = d3.scaleTime()
      .domain([minTimeValue, maxTimeValue])
      .nice(d3.timeDay)
      .range([height, 0]);

    let yAxis = d3.axisLeft(y).ticks(24).tickFormat(d3.timeFormat('%H:%M'));
    
    
    let main = chart.append('g')
      .attr('transform', `translate(${margin.left}, ${margin.top})`)
      .attr('width', width)
      .attr('height', height)
      .attr('class', 'main');
    
    // append the x-axis
    main.append('g')
      .attr('transform', `translate(0, ${height})`)
      .attr('class', 'main axis date')
      .call(xAxis);
    
     // text label for the x-axis
    chart.append("text")             
      .attr("transform",
            "translate(" + ((width/2) + margin.left) + " ," + 
                           (height + margin.top + margin.bottom) + ")")
      .attr('class', 'axis-label')
      .text("Date Of Tweet");
    
    // append the y-axis
    main.append('g')
      .attr('class', 'main axis date')
      .call(yAxis);
    
    // text label for the y axis
    chart.append("text")
      .attr("transform", "rotate(-90)")
      .attr("y", 10)
      .attr("x",0 - ((height / 2) + (margin.top + margin.bottom)))
      .attr('class', 'axis-label')
      .text("Time of Tweet - CST (-6)");   
    
      // draw the data
      let circles = main.append('g');

      data.forEach(item => {
        circles.append('svg:circle')
          .attr('class', 'horse-point')
          .transition()
          .attr('cx', d => {
            return x(new Date(item.created_at));
          })
          .attr('cy', d => {
          let today = new Date();
          let time = new Date(item.created_at);
          return y(today.setHours(time.getHours(), time.getMinutes(), time.getSeconds(), time.getMilliseconds()));
        })
          .attr('r', 5);
      });
   }
}

// get the data
let data = fetch('https://s3-us-west-2.amazonaws.com/s.cdpn.io/4548/time-series.json').then(d => d.json()).then(data => {

  // masage the data a bit to get it in the right format
  let horseData = data.map(item => {
    return item.horse;
  })

  // create the chart
  let chart = new ScatterPlot('#chart', {
    data: horseData,
    width: 960
  });
})



              
            
!
999px

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