city temps example

<!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; }
    svg {
      width: 100%;
      height: 100%;
    }
  </style>
</head>

<body>
  <svg></svg>
  <script>
    var city = 'New York';
    var width = 740;
    var height = 300;
    var margin = {top: 20, bottom: 20, left: 20, right: 20};
    
    // dataset of city temperatures across time
    var data = [8, 6, 7, 5, 3, 0, 9];
      // clean the data
      
      // get min/max
      var xExtent = d3.extent(data);
      console.log(xExtent);
      // or use extent, which gives back [min, max]
      var yMax = d3.max(data);
      console.log(yMax);
      
      var xScale = d3.scaleBand()
      	.domain(data)
        .range([margin.left, width - margin.right])

// try different scales, change the ranges, see what happens
      var yScale = d3.scaleLinear()
        .domain([0, yMax])
        .range([height - margin.bottom, margin.top]);
      var heightScale = d3.scaleLinear()
      	.domain([0, yMax])
      	.range([0, height - margin.top - margin.bottom]);
      
      var xAxis = d3.axisBottom()
      	.scale(xScale)
      // try passing in tick valuess
     	var yAxis = d3.axisLeft()
      	.scale(yScale);
      
      var svg = d3.select('svg');
      
      svg.selectAll('rect')
    	.data(data)
    	.enter().append('rect')
    	.attr('x', function(d) {return xScale(d)})
    	.attr('y', function(d) {return yScale(d)})
    	.attr('width', (width - margin.left - margin.right)/7)
    	.attr('height', function(d) {
          return heightScale(d);
        })
    	.attr('fill', 'blue')
    	.attr('stroke', '#fff');
      
      svg.append('g')
        .attr('transform', 'translate(' + [0, height - margin.bottom] + ')')
      	.call(xAxis);
      svg.append('g')
        .attr('transform', 'translate(' + [margin.left, 0] + ')')
      	.call(yAxis);
  </script>
</body>

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