MorganZhang100/cars.csv

## cars.csv

          
            
            speed
            dist

            
              1
              4
              2

            
              2
              4
              10

            
              3
              7
              4

            
              4
              7
              22

            
              5
              8
              16

            
              6
              9
              10

            
              7
              10
              18

            
              8
              10
              26

            
              9
              10
              34

            
              10
              11
              17

            
              11
              11
              28

            
              12
              12
              14

            
              13
              12
              20

            
              14
              12
              24

            
              15
              12
              28

            
              16
              13
              26

            
              17
              13
              34

            
              18
              13
              34

            
              19
              13
              46

            
              20
              14
              26

            
              21
              14
              36

            
              22
              14
              60

            
              23
              14
              80

            
              24
              15
              20

            
              25
              15
              26

            
              26
              15
              54

            
              27
              16
              32

            
              28
              16
              40

            
              29
              17
              32

            
              30
              17
              40

            
              31
              17
              50

            
              32
              18
              42

            
              33
              18
              56

            
              34
              18
              76

            
              35
              18
              84

            
              36
              19
              36

            
              37
              19
              46

            
              38
              19
              68

            
              39
              20
              32

            
              40
              20
              48

            
              41
              20
              52

            
              42
              20
              56

            
              43
              20
              64

            
              44
              22
              66

            
              45
              23
              54

            
              46
              24
              70

            
              47
              24
              92

            
              48
              24
              93

            
              49
              24
              120

            
              50
              25
              85

## index.html
<!DOCTYPE html>
<html>
<meta charset="utf-8">

<!-- Example based on http://bl.ocks.org/mbostock/3887118 -->
<!-- Tooltip example from http://www.d3noob.org/2013/01/adding-tooltips-to-d3js-graph.html -->

<style>
body {
  font: 11px sans-serif;
}

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

.dot {
  stroke: #000;
}

.tooltip {
  position: absolute;
  width: 200px;
  height: 28px;
  pointer-events: none;
}
</style>
<body>
<script src="http://d3js.org/d3.v3.min.js"></script>

<script>
var margin = {top: 20, right: 20, bottom: 30, left: 40},
    width = 960 - margin.left - margin.right,
    height = 500 - margin.top - margin.bottom;

/*
 * value accessor - returns the value to encode for a given data object.
 * scale - maps value to a visual display encoding, such as a pixel position.
 * map function - maps from data value to display value
 * axis - sets up axis
 */

// setup x
var xValue = function(d) { return d.dist;}, // data -> value
    xScale = d3.scale.linear().range([0, width]), // value -> display
    xMap = function(d) { return xScale(xValue(d));}, // data -> display
    xAxis = d3.svg.axis().scale(xScale).orient("bottom");

// setup y
var yValue = function(d) { return d.speed;}, // data -> value
    yScale = d3.scale.linear().range([height, 0]), // value -> display
    yMap = function(d) { return yScale(yValue(d));}, // data -> display
    yAxis = d3.svg.axis().scale(yScale).orient("left");

// setup fill color
var cValue = function(d) { return d.Manufacturer;},
    color = d3.scale.category10();

// add the graph canvas to the body of the webpage
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 + ")");

// add the tooltip area to the webpage
var tooltip = d3.select("body").append("div")
    .attr("class", "tooltip")
    .style("opacity", 0);

// load data
d3.csv("cars.csv", function(error, data) {

  // change string (from CSV) into number format
  data.forEach(function(d) {
    d.speed = +d.speed;
    d.dist = +d.dist;
//    console.log(d);
  });

  // don't want dots overlapping axis, so add in buffer to data domain
  xScale.domain([d3.min(data, xValue)-1, d3.max(data, xValue)+1]);
  yScale.domain([d3.min(data, yValue)-1, d3.max(data, yValue)+1]);

  // x-axis
  svg.append("g")
      .attr("class", "x axis")
      .attr("transform", "translate(0," + height + ")")
      .call(xAxis)
    .append("text")
      .attr("class", "label")
      .attr("x", width)
      .attr("y", -6)
      .style("text-anchor", "end")
      .text("Stop distance");

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

  // draw dots
  svg.selectAll(".dot")
      .data(data)
    .enter().append("circle")
      .attr("class", "dot")
      .attr("r", 3.5)
      .attr("cx", xMap)
      .attr("cy", yMap)
      .style("fill", function(d) { return color(cValue(d));})
      .on("mouseover", function(d) {
          tooltip.transition()
               .duration(200)
               .style("opacity", .9);
          tooltip.html("Car speed and stop distance" + "<br/> (" + xValue(d)
          + ", " + yValue(d) + ")")
               .style("left", (d3.event.pageX + 5) + "px")
               .style("top", (d3.event.pageY - 28) + "px");
      })
      .on("mouseout", function(d) {
          tooltip.transition()
               .duration(500)
               .style("opacity", 0);
      });

  // draw legend
  var legend = svg.selectAll(".legend")
      .data(color.domain())
    .enter().append("g")
      .attr("class", "legend")
      .attr("transform", function(d, i) { return "translate(0," + i * 20 + ")"; });

  // draw legend colored rectangles
  legend.append("rect")
      .attr("x", width - 18)
      .attr("width", 18)
      .attr("height", 18)
      .style("fill", color);

  // draw legend text
  legend.append("text")
      .attr("x", width - 24)
      .attr("y", 9)
      .attr("dy", ".35em")
      .style("text-anchor", "end")
      .text(function(d) { return d;})
});

</script>
</body>
</html>
	speed	dist
1	4	2
2	4	10
3	7	4
4	7	22
5	8	16
6	9	10
7	10	18
8	10	26
9	10	34
10	11	17
11	11	28
12	12	14
13	12	20
14	12	24
15	12	28
16	13	26
17	13	34
18	13	34
19	13	46
20	14	26
21	14	36
22	14	60
23	14	80
24	15	20
25	15	26
26	15	54
27	16	32
28	16	40
29	17	32
30	17	40
31	17	50
32	18	42
33	18	56
34	18	76
35	18	84
36	19	36
37	19	46
38	19	68
39	20	32
40	20	48
41	20	52
42	20	56
43	20	64
44	22	66
45	23	54
46	24	70
47	24	92
48	24	93
49	24	120
50	25	85
	<!DOCTYPE html>
	<html>
	<meta charset="utf-8">

	<!-- Example based on http://bl.ocks.org/mbostock/3887118 -->
	<!-- Tooltip example from http://www.d3noob.org/2013/01/adding-tooltips-to-d3js-graph.html -->

	<style>
	body {
	font: 11px sans-serif;
	}

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

	.dot {
	stroke: #000;
	}

	.tooltip {
	position: absolute;
	width: 200px;
	height: 28px;
	pointer-events: none;
	}
	</style>
	<body>
	<script src="http://d3js.org/d3.v3.min.js"></script>

	<script>
	var margin = {top: 20, right: 20, bottom: 30, left: 40},
	width = 960 - margin.left - margin.right,
	height = 500 - margin.top - margin.bottom;

	/*
	* value accessor - returns the value to encode for a given data object.
	* scale - maps value to a visual display encoding, such as a pixel position.
	* map function - maps from data value to display value
	* axis - sets up axis
	*/

	// setup x
	var xValue = function(d) { return d.dist;}, // data -> value
	xScale = d3.scale.linear().range([0, width]), // value -> display
	xMap = function(d) { return xScale(xValue(d));}, // data -> display
	xAxis = d3.svg.axis().scale(xScale).orient("bottom");

	// setup y
	var yValue = function(d) { return d.speed;}, // data -> value
	yScale = d3.scale.linear().range([height, 0]), // value -> display
	yMap = function(d) { return yScale(yValue(d));}, // data -> display
	yAxis = d3.svg.axis().scale(yScale).orient("left");

	// setup fill color
	var cValue = function(d) { return d.Manufacturer;},
	color = d3.scale.category10();

	// add the graph canvas to the body of the webpage
	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 + ")");

	// add the tooltip area to the webpage
	var tooltip = d3.select("body").append("div")
	.attr("class", "tooltip")
	.style("opacity", 0);

	// load data
	d3.csv("cars.csv", function(error, data) {

	// change string (from CSV) into number format
	data.forEach(function(d) {
	d.speed = +d.speed;
	d.dist = +d.dist;
	// console.log(d);
	});

	// don't want dots overlapping axis, so add in buffer to data domain
	xScale.domain([d3.min(data, xValue)-1, d3.max(data, xValue)+1]);
	yScale.domain([d3.min(data, yValue)-1, d3.max(data, yValue)+1]);

	// x-axis
	svg.append("g")
	.attr("class", "x axis")
	.attr("transform", "translate(0," + height + ")")
	.call(xAxis)
	.append("text")
	.attr("class", "label")
	.attr("x", width)
	.attr("y", -6)
	.style("text-anchor", "end")
	.text("Stop distance");

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

	// draw dots
	svg.selectAll(".dot")
	.data(data)
	.enter().append("circle")
	.attr("class", "dot")
	.attr("r", 3.5)
	.attr("cx", xMap)
	.attr("cy", yMap)
	.style("fill", function(d) { return color(cValue(d));})
	.on("mouseover", function(d) {
	tooltip.transition()
	.duration(200)
	.style("opacity", .9);
	tooltip.html("Car speed and stop distance" + "<br/> (" + xValue(d)
	+ ", " + yValue(d) + ")")
	.style("left", (d3.event.pageX + 5) + "px")
	.style("top", (d3.event.pageY - 28) + "px");
	})
	.on("mouseout", function(d) {
	tooltip.transition()
	.duration(500)
	.style("opacity", 0);
	});

	// draw legend
	var legend = svg.selectAll(".legend")
	.data(color.domain())
	.enter().append("g")
	.attr("class", "legend")
	.attr("transform", function(d, i) { return "translate(0," + i * 20 + ")"; });

	// draw legend colored rectangles
	legend.append("rect")
	.attr("x", width - 18)
	.attr("width", 18)
	.attr("height", 18)
	.style("fill", color);

	// draw legend text
	legend.append("text")
	.attr("x", width - 24)
	.attr("y", 9)
	.attr("dy", ".35em")
	.style("text-anchor", "end")
	.text(function(d) { return d;})
	});

	</script>
	</body>
	</html>