text: /*=========================================================================================
      File Name: waterfall.js
      Description: D3 waterfall chart
      ----------------------------------------------------------------------------------------
      Item Name: Modern Admin - Clean Bootstrap 4 Dashboard HTML Template
      Version: 1.0
      Author: PIXINVENT
      Author URL: http://www.themeforest.net/user/pixinvent
  ==========================================================================================*/
  
  // Waterfall chart
  // ------------------------------
  $(window).on("load", function(){
  
      var ele = d3.select("#waterfall"),
      margin = {top: 20, right: 20, bottom: 30, left: 50},
      width = ele.node().getBoundingClientRect().width - margin.left - margin.right,
      height = 500 - margin.top - margin.bottom;
      padding = 0.3;
  
      // Initialize Scales
      // ------------------------------
  
      var x = d3.scale.ordinal()
          .rangeRoundBands([0, width], padding);
  
      var y = d3.scale.linear()
          .range([height, 0]);
  
      // Initialize Axis
      // ------------------------------
      var xAxis = d3.svg.axis()
          .scale(x)
          .orient("bottom");
  
      var yAxis = d3.svg.axis()
          .scale(y)
          .orient("left")
          .tickFormat(function(d) { return dollarFormatter(d); });
  
      // Chart
      var container = ele.append("svg");
  
      var svg = container
          .attr("width", width + margin.left + margin.right)
          .attr("height", height + margin.top + margin.bottom)
        .append("g")
          .attr("transform", "translate(" + margin.left + "," + margin.top + ")");
  
  
  
      // Load data
      // ------------------------------
  
      d3.csv("../../../app-assets/data/d3/bar/waterfall.csv", type, function(error, data) {
          if (error) throw error;
  
          // Transform data (i.e., finding cumulative values and total) for easier charting
          var cumulative = 0;
          for (var i = 0; i < data.length; i++) {
              data[i].start = cumulative;
              cumulative += data[i].value;
              data[i].end = cumulative;
  
              data[i].class = ( data[i].value >= 0 ) ? 'positive' : 'negative';
          }
          data.push({
              name: 'Total',
              end: cumulative,
              start: 0,
              class: 'total'
          });
  
          x.domain(data.map(function(d) { return d.name; }));
          y.domain([0, d3.max(data, function(d) { return d.end; })]);
  
          svg.append("g")
              .attr("class", "d3-axis d3-xaxis")
              .attr("transform", "translate(0," + height + ")")
              .call(xAxis);
  
          svg.append("g")
              .attr("class", "d3-axis d3-yaxis")
              .call(yAxis);
  
          var bar = svg.selectAll(".d3-bar")
              .data(data)
          .enter().append("g")
              .attr("class", function(d) { return "d3-bar " + d.class; })
              .attr("transform", function(d) { return "translate(" + x(d.name) + ",0)"; });
  
          bar.append("rect")
              .attr("y", function(d) { return y( Math.max(d.start, d.end) ); })
              .attr("height", function(d) { return Math.abs( y(d.start) - y(d.end) ); })
              .attr("width", x.rangeBand());
  
          bar.append("text")
              .attr("x", x.rangeBand() / 2)
              .attr("y", function(d) { return y(d.end) + 5; })
              .attr("dy", function(d) { return ((d.class=='negative') ? '-' : '') + ".75em"; })
              .text(function(d) { return dollarFormatter(d.end - d.start);});
  
          bar.filter(function(d) { return d.class != "total"; }).append("line")
              .attr("class", "d3-connector")
              .attr("x1", x.rangeBand() + 5 )
              .attr("y1", function(d) { return y(d.end); } )
              .attr("x2", x.rangeBand() / ( 1 - padding) - 5 )
              .attr("y2", function(d) { return y(d.end); } );
      });
  
      function type(d) {
          d.value = +d.value;
          return d;
      }
  
      function dollarFormatter(n) {
          n = Math.round(n);
          var result = n;
          if (Math.abs(n) > 1000) {
              result = Math.round(n/1000) + 'K';
          }
          return '$' + result;
      }
  
      // Resize chart
      // ------------------------------
  
      // Call function on window resize
      $(window).on('resize', resize);
  
      // Call function on sidebar width change
      $('.menu-toggle').on('click', resize);
  
      // Resize function
      // ------------------------------
      function resize() {
  
          width = ele.node().getBoundingClientRect().width - margin.left - margin.right;
  
          // Main svg width
          container.attr("width", width + margin.left + margin.right);
  
          // Width of appended group
          svg.attr("width", width + margin.left + margin.right);
  
  
          // Axis
          // -------------------------
          x.rangeRoundBands([0, width], padding);
          svg.selectAll('.d3-xaxis').call(xAxis);
  
  
          svg.selectAll(".d3-bar").attr("transform", function(d) { return "translate(" + x(d.name) + ",0)"; });
          svg.selectAll(".d3-bar rect").attr("width", x.rangeBand());
          svg.selectAll(".d3-bar text").attr("x", x.rangeBand() / 2);
          svg.selectAll(".d3-connector").attr("x1", x.rangeBand() + 5 ).attr("x2", x.rangeBand() / ( 1 - padding) - 5 );
      }
  });