pos neg tm proto

<!DOCTYPE html>
<head>
  <meta charset="utf-8">
  <script src="https://d3js.org/d3.v4.min.js">
  </script>
    <script src="https://cdn.jsdelivr.net/lodash/4.17.4/lodash.min.js"></script>
  <style>
    body { margin:0;position:fixed;top:0;right:0;bottom:0;left:0; }
  </style>
</head>

<body>
  <script>
    // Feel free to change or delete any of the code you see in this editor!
    const width = 960;
    const height = 500;
    let svg = d3.select("body").append("svg")
      .attr("width", width)
      .attr("height", height)

// data
    let size = 8000;
    let keys = ['pos', 'neg'];
    let datum = generateData(size)
    console.log(datum)
    // scale
    let xScale = d3.scaleLinear().domain([0, size]).range([0, width - 50]);
    
    let y = d3.scaleLinear().domain([-1, 1]).range([height, 0]);
    
    // g element
    let group = svg.append('g')
    		.attr('transform', `translate(${20}, ${10})`);
    
    /*
      group.append('circle')
    	.attr('fill', '#555')
    	.attr('r', 20)
     */
    let datos = '';
    group.selectAll('emotion')
    		.data(datum)
    		.enter()
    		.append('line')
    		.classed('lline', true)
    		.attr('x1', (d,i)=> {
      			return xScale(i);
    		})
    		.attr('y1', y(0))
    		.attr('x2', (d,i)=> {
      			return xScale(i);
    		})
    		
    		.style('stroke', (d, i) => {
            if( d.key == 'pos') return 'green';
      			else return 'red';
        })
    		.attr('y2', (d, i) => {
      		if (d.key == 'pos') return y(d.value)
        	else return y(-d.value)
    		})
    		.attr('stroke-linecap', 'round')
    	
    
    svg.append('rect')
    		.attr("y", 95)
        .attr("x", xScale(0))
        .attr("width", xScale.range()[1])
        .style('opacity', 0)
        .attr("height", 117)
        .on('mousemove', () => {
            let xx = d3.event.x;

//console.log('fish',x.invert(x), x(x.invert(x)), fisheye(x.invert(x),x))

d3.selectAll('line')
              .attr('x1', (d, i) => fisheye(d,xx))
              .attr('x2', (d, i) => fisheye(d,xx))
          })
          .on('mouseleave', () => {
             d3.selectAll('line')
              .attr('x1', (d, i) => xScale(i))
              .attr('x2', (d, i) => xScale(i))
        })
    
   function generateData(size) {
     let data = [];
     
     data.fill({});
     
     _.times(size, ()=> { 
       let rand = Math.random();
       data.push({key: keys[Math.floor( rand * keys.length)], 
       value:rand
     })})
     
   return data;
   }
    
    let distortion = 5;
    function fisheye(_, a) {
      let x = xScale(_),
          left = x < a,
          range = d3.extent(xScale.range()),
          min = range[0],
          max = range[1],
          m = left ? a - min : max - a;
      if (m === 0) m = max - min;
      return (left ? -1 : 1) * m * (distortion + 1) / (distortion + (m / Math.abs(x - a))) + a;
    }

</script>
</body>

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

https://cdn.jsdelivr.net/lodash/4.17.4/lodash.min.js