ColinEberhardt/.block

## .block
license: mit

## README.md

      
    Raw
  

              README.md
            
          
    This is a simple demonstration of the d3fc extent component, which provides a flexible mechanism for computing the domain of a chart. It allows you to add padding, define multiple accessors, include fixed values (e.g. ensure it includes zero), etc.
var yExtent = fc.extentLinear()
	// the property of the data that defines the y extent
  .accessors([function(d) { return d.close; }])
  // pad by 10% in the +ve direction
  .pad([0, 0.1])
  // ensure that the extent includes zero
  .include([0]);

var xExtent = fc.extentDate()
	// the property of the data that defines the x extent
  .accessors([function(d) { return d.date; }])
  // pad in domain units (in this case milliseconds)
  .padUnit('domain')
  // ensure that the scale is padded by one day in either direction
  .pad([millisPerDay, millisPerDay]);

// apply the extent to the scales
x.domain(xExtent(data));
y.domain(yExtent(data));

Forked from this block: https://bl.ocks.org/d3noob/2505b09d0feb51d0c9873cc486f10f67
forked from d3noob's block: d3fc extent example

  
## data.csv

          
            date
            close

            
              1-May-12
              58.13

            
              30-Apr-12
              53.98

            
              27-Apr-12
              67.00

            
              26-Apr-12
              89.70

            
              25-Apr-12
              99.00

            
              24-Apr-12
              130.28

            
              23-Apr-12
              166.70

            
              20-Apr-12
              234.98

            
              19-Apr-12
              345.44

            
              18-Apr-12
              443.34

            
              17-Apr-12
              543.70

            
              16-Apr-12
              580.13

            
              13-Apr-12
              605.23

            
              12-Apr-12
              622.77

            
              11-Apr-12
              626.20

            
              10-Apr-12
              628.44

            
              9-Apr-12
              636.23

            
              5-Apr-12
              633.68

            
              4-Apr-12
              624.31

            
              3-Apr-12
              629.32

            
              2-Apr-12
              618.63

            
              30-Mar-12
              599.55

            
              29-Mar-12
              609.86

            
              28-Mar-12
              617.62

            
              27-Mar-12
              614.48

            
              26-Mar-12
              606.98

## index.html
<!DOCTYPE html>
<!-- include polyfills for custom event, Symbol and Custom Elements -->
<script src="//unpkg.com/babel-polyfill@6.26.0/dist/polyfill.js"></script>
<script src="//unpkg.com/custom-event-polyfill@0.3.0/custom-event-polyfill.js"></script>
<script src="//cdnjs.cloudflare.com/ajax/libs/document-register-element/1.8.0/document-register-element.js"></script>

<!-- use babel so that we can use arrow functions and other goodness in this block! -->
<script src="//unpkg.com/babel-standalone@6/babel.min.js"></script>

<script src="//unpkg.com/d3@5.5.0"></script>
<script src="//unpkg.com/d3fc@14.0.1"></script>

<style> /* set the CSS */

.line {
  fill: none;
  stroke: steelblue;
  stroke-width: 2px;
}

</style>
<body>

<script>

// set the dimensions and margins of the graph
var margin = {top: 20, right: 20, bottom: 30, left: 50},
    width = 960 - margin.left - margin.right,
    height = 500 - margin.top - margin.bottom;

// parse the date / time
var parseTime = d3.timeParse("%d-%b-%y");

// set the ranges
var x = d3.scaleTime().range([0, width]);
var y = d3.scaleLinear().range([height, 0]);

// define the line
var valueline = d3.line()
    .x(function(d) { return x(d.date); })
    .y(function(d) { return y(d.close); });

// append the svg obgect to the body of the page
// appends 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 + ")");

// Get the data
d3.csv("data.csv").then(data => {

  // format the data
  data.forEach(function(d) {
      d.date = parseTime(d.date);
      d.close = +d.close;
  });

  var millisPerDay = 1000 * 60 * 60 * 24;

  var yExtent = fc.extentLinear()
  	.accessors([function(d) { return d.close; }])
  	.pad([0, 0.1])
  	.include([0]);

  var xExtent = fc.extentDate()
  	.accessors([function(d) { return d.date; }])
  	.padUnit('domain')
  	.pad([millisPerDay, millisPerDay]);

  // scale the range of the data
  x.domain(xExtent(data));
  y.domain(yExtent(data));

  // add the valueline path.
  svg.append("path")
     .data([data])
     .attr("class", "line")
     .attr("d", valueline);

  // add the dots
  svg.selectAll("dot")
     .data(data)
     .enter().append("circle")
       .attr("r", 5)
       .attr("cx", function(d) { return x(d.date); })
       .attr("cy", function(d) { return y(d.close); });

  // 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));

});

</script>
</body>

## thumbnail.png

      
    Raw
  

              thumbnail.png
	date	close
	1-May-12	58.13
	30-Apr-12	53.98
	27-Apr-12	67.00
	26-Apr-12	89.70
	25-Apr-12	99.00
	24-Apr-12	130.28
	23-Apr-12	166.70
	20-Apr-12	234.98
	19-Apr-12	345.44
	18-Apr-12	443.34
	17-Apr-12	543.70
	16-Apr-12	580.13
	13-Apr-12	605.23
	12-Apr-12	622.77
	11-Apr-12	626.20
	10-Apr-12	628.44
	9-Apr-12	636.23
	5-Apr-12	633.68
	4-Apr-12	624.31
	3-Apr-12	629.32
	2-Apr-12	618.63
	30-Mar-12	599.55
	29-Mar-12	609.86
	28-Mar-12	617.62
	27-Mar-12	614.48
	26-Mar-12	606.98
	<!DOCTYPE html>
	<!-- include polyfills for custom event, Symbol and Custom Elements -->
	<script src="//unpkg.com/babel-polyfill@6.26.0/dist/polyfill.js"></script>
	<script src="//unpkg.com/custom-event-polyfill@0.3.0/custom-event-polyfill.js"></script>
	<script src="//cdnjs.cloudflare.com/ajax/libs/document-register-element/1.8.0/document-register-element.js"></script>

	<!-- use babel so that we can use arrow functions and other goodness in this block! -->
	<script src="//unpkg.com/babel-standalone@6/babel.min.js"></script>

	<script src="//unpkg.com/d3@5.5.0"></script>
	<script src="//unpkg.com/d3fc@14.0.1"></script>

	<style> /* set the CSS */

	.line {
	fill: none;
	stroke: steelblue;
	stroke-width: 2px;
	}

	</style>
	<body>

	<script>

	// set the dimensions and margins of the graph
	var margin = {top: 20, right: 20, bottom: 30, left: 50},
	width = 960 - margin.left - margin.right,
	height = 500 - margin.top - margin.bottom;

	// parse the date / time
	var parseTime = d3.timeParse("%d-%b-%y");

	// set the ranges
	var x = d3.scaleTime().range([0, width]);
	var y = d3.scaleLinear().range([height, 0]);

	// define the line
	var valueline = d3.line()
	.x(function(d) { return x(d.date); })
	.y(function(d) { return y(d.close); });

	// append the svg obgect to the body of the page
	// appends 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 + ")");

	// Get the data
	d3.csv("data.csv").then(data => {

	// format the data
	data.forEach(function(d) {
	d.date = parseTime(d.date);
	d.close = +d.close;
	});

	var millisPerDay = 1000 * 60 * 60 * 24;

	var yExtent = fc.extentLinear()
	.accessors([function(d) { return d.close; }])
	.pad([0, 0.1])
	.include([0]);

	var xExtent = fc.extentDate()
	.accessors([function(d) { return d.date; }])
	.padUnit('domain')
	.pad([millisPerDay, millisPerDay]);

	// scale the range of the data
	x.domain(xExtent(data));
	y.domain(yExtent(data));

	// add the valueline path.
	svg.append("path")
	.data([data])
	.attr("class", "line")
	.attr("d", valueline);

	// add the dots
	svg.selectAll("dot")
	.data(data)
	.enter().append("circle")
	.attr("r", 5)
	.attr("cx", function(d) { return x(d.date); })
	.attr("cy", function(d) { return y(d.close); });

	// 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));

	});

	</script>
	</body>