jbants/app.js

## app.js
var dataFlag = 1

var data = [{"name":"A","value":0.15},
            {"name":"B","value":-0.025},
            {"name":"C","value":-0.35},
		   ];

var data1 = [{"name":"A","value":0.012},
            {"name":"B","value":-0.15},
            {"name":"C","value":0.25},
		   ];

var margin = {
        top: 20,
        right: 20,
        bottom: 30,
        left: 40
      },
      width = 150 - margin.left - margin.right,
      height = 300 - margin.top - margin.bottom;

var x = d3.scale.ordinal()
  .rangeRoundBands([0, width], .1);

var y = d3.scale.linear()
  .range([height, 0]);

var xAxis = d3.svg.axis()
  .scale(x)
  .orient("bottom");

var yAxis = d3.svg.axis()
  .scale(y)
  .orient("left");

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 + ")");

function init(data_val){

	  var data = data_val
	  svg.selectAll('g').remove()
	  x.domain(data.map(function(d) {
	    return d.name;
	  }));
	  x.domain("A");

	  y.domain(d3.extent(data, function(d) {
	    return d.value; // sets extent of graph
	  }));

	  svg.append("g")
		.attr("class", "x axis")
		.attr("transform", "translate(0," + height + ")")
		.call(xAxis);

    // zero line
	  svg.select("g")
	    .attr("class", "x axis")
        .attr("transform", "translate(0," + y(0) + ")")
        .call((xAxis).tickFormat("").tickSize(0));

	  svg.append("g")
		.attr("class", "y axis")
		.call(yAxis)
		.append("text")
		.attr("transform", "rotate(-90)")
		.attr("y", 6)
		.attr("dy", ".71em")
		.style("text-anchor", "end")
		.text("m3");

      bar = svg.selectAll(".bar")
        .data(data)
        .enter()
        .append("g")
        .on("mouseover", mouseover)
    		.on("mousemove", function(d){
    			div.html(d.name +"</br>"+ d.value+" m<sup>3</sup>")
    		    .style("left", (d3.event.pageX) + "px")
    		    .style("top", (d3.event.pageY) + "px");
    		})
        	.on("mouseout", mouseout);

    var div = d3.select("body").append("div")
        .attr("class", "tooltip")
        .style("opacity", 1e-6);

    function mouseover() {
      div.transition()
          .duration(300)
          .style("opacity", 1);
    }

    function mouseout() {
      div.transition()
          .duration(300)
          .style("opacity", 1e-6);
    }

      /* Add one rectangle for each object in the JSON dictionary.
       * Query the object by the name field and style accordingly.
       * TODO: change order of drawings so that overall will be on top.
       */
      bar
      	.append("rect")
      	.attr("id","avaialble")
        .attr("class", "bar")
        .attr("x", 25)
        .attr("width", x.rangeBand() -30 )
        .attr("y", function(d) {if (d.name == "A") return y(Math.max(0,d.value));})
        .attr("height", function(d) {if (d.name == "A") return Math.abs(y(d.value) - y(0))});

      bar
        .append("rect")
        .attr("id","used")
        .attr("class", "bar2")
        .attr("x", 25)
        .attr("width", x.rangeBand() - 30)
        .attr("y", function(d) {if (d.name == "B") return y(Math.max(0,d.value));})
        .attr("height", function(d) {if (d.name == "B") return Math.abs(y(d.value) - y(0))});

      bar //produced water
      	.append("rect")
      	.attr("id","produced")
      	.attr("class", "bar3")
	    .attr("x", 40)
	    .attr("width", x.rangeBand()-60)
	    .attr("y", function(d) {if (d.name == "C") return y(Math.max(0,d.value));})
	    .attr("height", function(d) {if (d.name == "C") return Math.abs(y(d.value) - y(0))});

}

function updateData(){
	if (dataFlag == 1){
		init(data1)
		dataFlag = 2
	}
	else {
		init(data)
		dataFlag = 1
	}
}

init(data)

## index.html
<!DOCTYPE html>
<meta charset="utf-8">
<style>
div.tooltip {
  position: absolute;
  text-align: center;
  width: 60px;
  height: 20px;
  padding: 8px;
  font: 12px sans-serif;
  background: white;
  border: solid 1px #aaa;
  border-radius: 8px;
  pointer-events: none;
}

  .bar {
    fill: #bdc9e1;
    opacity: 0.5;
  }

  .bar2 {
    fill: #74a9cf;
    opacity: 0.5;
  }

  .bar3 {
    fill: #0570b0;
    opacity: 0.5;
  }

  .bar:hover {
    fill: brown;
  }
  .bars {
    fill: red;
    opacity: 0.2;
  }

  .axis {
    font: 10px sans-serif;
  }

  .axis path,
  .axis line {
    fill: none;
    stroke: #000;
    shape-rendering: crispEdges;
  }

/*   .x.axis path {
    display: none;
  } */

</style>
<body>
<div id="tooltip"></div>
<div id="option">
    <input name="updateButton"
           type="button"
           value="Update"
           onclick="updateData()" />
</div>
</body>
</html>
<script src="https://cdnjs.cloudflare.com/ajax/libs/d3/3.5.5/d3.min.js"></script>
<script type="text/javascript" src="https://ajax.googleapis.com/ajax/libs/jquery/1.7.2/jquery.min.js"></script>
<script src="app.js"></script>
	var dataFlag = 1

	var data = [{"name":"A","value":0.15},
	{"name":"B","value":-0.025},
	{"name":"C","value":-0.35},
	];

	var data1 = [{"name":"A","value":0.012},
	{"name":"B","value":-0.15},
	{"name":"C","value":0.25},
	];

	var margin = {
	top: 20,
	right: 20,
	bottom: 30,
	left: 40
	},
	width = 150 - margin.left - margin.right,
	height = 300 - margin.top - margin.bottom;

	var x = d3.scale.ordinal()
	.rangeRoundBands([0, width], .1);

	var y = d3.scale.linear()
	.range([height, 0]);

	var xAxis = d3.svg.axis()
	.scale(x)
	.orient("bottom");

	var yAxis = d3.svg.axis()
	.scale(y)
	.orient("left");

	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 + ")");

	function init(data_val){

	var data = data_val
	svg.selectAll('g').remove()
	x.domain(data.map(function(d) {
	return d.name;
	}));
	x.domain("A");

	y.domain(d3.extent(data, function(d) {
	return d.value; // sets extent of graph
	}));

	svg.append("g")
	.attr("class", "x axis")
	.attr("transform", "translate(0," + height + ")")
	.call(xAxis);

	// zero line
	svg.select("g")
	.attr("class", "x axis")
	.attr("transform", "translate(0," + y(0) + ")")
	.call((xAxis).tickFormat("").tickSize(0));

	svg.append("g")
	.attr("class", "y axis")
	.call(yAxis)
	.append("text")
	.attr("transform", "rotate(-90)")
	.attr("y", 6)
	.attr("dy", ".71em")
	.style("text-anchor", "end")
	.text("m3");

	bar = svg.selectAll(".bar")
	.data(data)
	.enter()
	.append("g")
	.on("mouseover", mouseover)
	.on("mousemove", function(d){
	div.html(d.name +"</br>"+ d.value+" m<sup>3</sup>")
	.style("left", (d3.event.pageX) + "px")
	.style("top", (d3.event.pageY) + "px");
	})
	.on("mouseout", mouseout);

	var div = d3.select("body").append("div")
	.attr("class", "tooltip")
	.style("opacity", 1e-6);

	function mouseover() {
	div.transition()
	.duration(300)
	.style("opacity", 1);
	}

	function mouseout() {
	div.transition()
	.duration(300)
	.style("opacity", 1e-6);
	}

	/* Add one rectangle for each object in the JSON dictionary.
	* Query the object by the name field and style accordingly.
	* TODO: change order of drawings so that overall will be on top.
	*/
	bar
	.append("rect")
	.attr("id","avaialble")
	.attr("class", "bar")
	.attr("x", 25)
	.attr("width", x.rangeBand() -30 )
	.attr("y", function(d) {if (d.name == "A") return y(Math.max(0,d.value));})
	.attr("height", function(d) {if (d.name == "A") return Math.abs(y(d.value) - y(0))});

	bar
	.append("rect")
	.attr("id","used")
	.attr("class", "bar2")
	.attr("x", 25)
	.attr("width", x.rangeBand() - 30)
	.attr("y", function(d) {if (d.name == "B") return y(Math.max(0,d.value));})
	.attr("height", function(d) {if (d.name == "B") return Math.abs(y(d.value) - y(0))});

	bar //produced water
	.append("rect")
	.attr("id","produced")
	.attr("class", "bar3")
	.attr("x", 40)
	.attr("width", x.rangeBand()-60)
	.attr("y", function(d) {if (d.name == "C") return y(Math.max(0,d.value));})
	.attr("height", function(d) {if (d.name == "C") return Math.abs(y(d.value) - y(0))});

	}

	function updateData(){
	if (dataFlag == 1){
	init(data1)
	dataFlag = 2
	}
	else {
	init(data)
	dataFlag = 1
	}
	}

	init(data)
	<!DOCTYPE html>
	<meta charset="utf-8">
	<style>
	div.tooltip {
	position: absolute;
	text-align: center;
	width: 60px;
	height: 20px;
	padding: 8px;
	font: 12px sans-serif;
	background: white;
	border: solid 1px #aaa;
	border-radius: 8px;
	pointer-events: none;
	}

	.bar {
	fill: #bdc9e1;
	opacity: 0.5;
	}

	.bar2 {
	fill: #74a9cf;
	opacity: 0.5;
	}

	.bar3 {
	fill: #0570b0;
	opacity: 0.5;
	}

	.bar:hover {
	fill: brown;
	}
	.bars {
	fill: red;
	opacity: 0.2;
	}

	.axis {
	font: 10px sans-serif;
	}

	.axis path,
	.axis line {
	fill: none;
	stroke: #000;
	shape-rendering: crispEdges;
	}

	/* .x.axis path {
	display: none;
	} */

	</style>
	<body>
	<div id="tooltip"></div>
	<div id="option">
	<input name="updateButton"
	type="button"
	value="Update"
	onclick="updateData()" />
	</div>
	</body>
	</html>
	<script src="https://cdnjs.cloudflare.com/ajax/libs/d3/3.5.5/d3.min.js"></script>
	<script type="text/javascript" src="https://ajax.googleapis.com/ajax/libs/jquery/1.7.2/jquery.min.js"></script>
	<script src="app.js"></script>