D3 Examples - test movement block

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<!DOCTYPE html>
<meta charset="utf-8">
<style> /* set the CSS */
​
.bar { fill: steelblue; }
​
</style>
<body>
    
<!-- load the d3.js library -->     
<script src="//d3js.org/d3.v4.min.js"></script>
<script>
​
// set the dimensions and margins of the graph
var margin = {top: 20, right: 20, bottom: 30, left: 40},
    width = 960 - margin.left - margin.right,
    height = 600 - margin.top - margin.bottom;
​
// set the ranges
var x = d3.scaleBand()
          .range([0, width])
          .padding(0.1);
var y = d3.scaleLinear()
          .range([height, 0]);
          
// append the svg object to the body of the page
// append a 'group' element to 'svg'
// moves the 'group' element to the top left margin
var svg = d3.select("body").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 + ")");
​
//gradient?
var defs = svg.append("defs");
    
var linearGradient = defs.append("linearGradient")
    .attr("id", "linear-gradient")
    .attr("x1", "0%")
    .attr("y1", "0%")
    .attr("x2", "100%")
    .attr("y2", "100%");
    
    linearGradient.append("stop") 
    .attr("offset", "0%")   
    .attr("stop-color", "#da75ff");
    
    linearGradient.append("stop") 
    .attr("offset", "100%")   
    .attr("stop-color", "#0d0089");
  
// get the data
d3.csv("test.csv", function(error, data) {
  if (error) throw error;
​
  // format the data
  data.forEach(function(d) {
    d.amount = +d.amount;
  });
​
  // Scale the range of the data in the domains
  x.domain(data.map(function(d) { return d.name; }));
  y.domain([0, d3.max(data, function(d) { return d.amount; })]);
​
  // append the rectangles for the bar chart
  svg.selectAll(".bar")
      .data(data)
    .enter().append("rect")
      .attr("class", "bar")
        .style("fill", "url(#linear-gradient)")
      .attr("x", function(d) { return x(d.name); })
      .attr("width", x.bandwidth())
      .attr("y", function(d) { return y(d.amount); })
      .attr("height", function(d) { return height - y(d.amount); });
​
  // add the x Axis
  svg.append("g")
      .attr("transform", "translate(0," + height + ")")
      .call(d3.axisBottom(x));
​
  // add the y Axis
  svg.append("g")
      .call(d3.axisLeft(y));
​
});
​
var rech = 50
var recw = 100
var whatever = [{x: width - margin.right - recw, y:0}];
​
​
//this is the box element
var group = svg.append("g")
    .data(whatever)
  .call(d3.drag()
    .on("start", dragstarted)
    .on("drag", dragged));
​
group.append("rect")
     .attr("x", function(d) { return d.x; })
     .attr("y", function(d) { return d.y; })
     .attr("height", rech)
     .attr("width", recw)
     .style("fill", "purple");
  
group.append("text")
     .attr("x", function(d) { return d.x; })
     .attr("y", function(d) { return d.y + rech/2; })
         .style("fill", "white")
         .text("Close");  
  
//drag functions
function dragstarted(d) {
  d3.select(this).raise();
}
​
function dragged(d) {
  d3.select(this).select("rect")
    .attr("x", d.x = Math.max(0, Math.min(width, d3.event.x)))
    .attr("y", d.y = Math.max(0, Math.min(height, d3.event.y)))
    d3.select(this).select("text")
    .attr("x", d.x = Math.max(0, Math.min(width, d3.event.x)))
    .attr("y", d.y  = Math.max(0, Math.min(height, d3.event.y + rech/2)));;
}
</script>
</body>
    