Old school D3 from simpler times

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romsson

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bar chart scaleband v4

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<!DOCTYPE html>
<head>
  <meta charset="utf-8">
  <script src="https://d3js.org/d3.v4.min.js"></script>
  <style>
    body { margin:0;position:fixed;top:0;right:0;bottom:0;left:0; }
    
    rect {
      fill: none;
      stroke: black;
    }
  </style>
</head>

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

var data = d3.range(39).map(function(d, i) { 
      return {"id": i, "value": Math.random()};
    });
    
    var x = d3.scaleBand()
    	.domain(data.map(function(d) { return d.id; }))
    	.range([100, 800]);

var y = d3.scaleLinear()
    	.domain([0, d3.max(data, function(d) { return d.value; })])
    	.range([200, 300]);
    
    var line = d3.line()
    	.x(function(d) { return x(d.id) + x.bandwidth()/2; })
			.y(function(d) { return 400 - y(d.value); })
    
    console.log(line(data))
    
    svg.selectAll("path").data([data]).enter()
    	.append("path")
    	.attr("d", line)
    	.style("stroke", "black")
    	.style("fill", "none");
   
    svg.selectAll("rect").data(data).enter()
      .append("rect")
      .attr("y", function(d, i) { return 400 - y(d.value); })
      .attr("x", function(d, i) { return x(d.id); })
      .attr("width", x.bandwidth())
    	.attr("height", function(d, i) { return y(d.value); });
 
    svg.selectAll("text").data(data).enter()
      .append("text")
      .text(function(d, i) { return d.id; })
      .attr("y", function(d, i) { return 420; })
      .attr("x", function(d, i) { return x(i) + x.bandwidth()/2; })
      .attr("font-size", 16)
    	.style("text-anchor", "center")
      .attr("font-family", "monospace")
    
  </script>
</body>

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