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HTML

              
                <!-- Load d3.js -->
<script src="https://d3js.org/d3.v4.js"></script>

<!-- Create a div where the circle will take place -->
<div id="dataviz_axisZoom"></div>

              
            
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CSS

              
                
              
            
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JS

              
                    // set the dimensions and margins of the graph
    var margin = {top: 10, right: 30, bottom: 30, left: 60},
        width = 460 - margin.left - margin.right,
        height = 400 - margin.top - margin.bottom;
    
    // append the SVG object to the body of the page
    var SVG = d3.select("#dataviz_axisZoom")
      .append("svg")
        .attr("width", width + margin.left + margin.right)
        .attr("height", height + margin.top + margin.bottom)
      .append("g")
        .attr("transform",
              "translate(" + margin.left + "," + margin.top + ")");
    
    //Read the data
    d3.csv("https://raw.githubusercontent.com/holtzy/D3-graph-gallery/master/DATA/iris.csv", function(data) {
    
      // Add X axis
      var x = d3.scaleLinear()
        .domain([4, 8])
        .range([ 0, width ]);
      var xAxis = SVG.append("g")
        .attr("transform", "translate(0," + height + ")")
        .call(d3.axisBottom(x));
    
      // Add Y axis
      var y = d3.scaleLinear()
        .domain([0, 9])
        .range([ height, 0]);
      var yAxis = SVG.append("g")
        .call(d3.axisLeft(y));
    
      // Add a clipPath: everything out of this area won't be drawn.
      var clip = SVG.append("defs").append("SVG:clipPath")
          .attr("id", "clip")
          .append("SVG:rect")
          .attr("width", width )
          .attr("height", height )
          .attr("x", 0)
          .attr("y", 0);
    
      // Create the scatter variable: where both the circles and the brush take place
      var scatter = SVG.append('g')
        .attr("clip-path", "url(#clip)")
    
      // Add circles
      scatter
        .selectAll("circle")
        .data(data)
        .enter()
        .append("circle")
          .attr("cx", function (d) { return x(d.Sepal_Length); } )
          .attr("cy", function (d) { return y(d.Petal_Length); } )
          .attr("r", 8)
          .style("fill", "#61a3a9")
          .style("opacity", 0.5)
    
      // Set the zoom and Pan features: how much you can zoom, on which part, and what to do when there is a zoom
      var zoom = d3.zoom()
          .scaleExtent([.5, 20])  // This control how much you can unzoom (x0.5) and zoom (x20)
          .extent([[0, 0], [width, height]])
          .on("zoom", updateChart);
    
      // This add an invisible rect on top of the chart area. This rect can recover pointer events: necessary to understand when the user zoom
      SVG.append("rect")
          .attr("width", width)
          .attr("height", height)
          .style("fill", "none")
          .style("pointer-events", "all")
          .attr('transform', 'translate(' + margin.left + ',' + margin.top + ')')
          .call(zoom);
      // now the user can zoom and it will trigger the function called updateChart
    
      // A function that updates the chart when the user zoom and thus new boundaries are available
      function updateChart() {
    
        // recover the new scale
        var newX = d3.event.transform.rescaleX(x);
        var newY = d3.event.transform.rescaleY(y);
    
        // update axes with these new boundaries
        xAxis.call(d3.axisBottom(newX))
        yAxis.call(d3.axisLeft(newY))
    
        // update circle position
        scatter
          .selectAll("circle")
          .attr('cx', function(d) {return newX(d.Sepal_Length)})
          .attr('cy', function(d) {return newY(d.Petal_Length)});
      }
    
    })
              
            
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999px

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