curran/.block

## .block
license: mit

## README.md

      
    Raw
  

              README.md
            
          
    This example shows a "popping effect" from having a semi-transparent fill color and an opaque stroke. This can be achieved using a little-known CSS keyword currentColor, which uses the value from the color attribute on visual marks. This is a convenient way to compute the data-driven color once, but use it as both the fill and stroke color of marks.
Another advantage of this technique is that you can see where there are overlapping circles (which would occlude each other if marks were opaque).
Related to d3-color - color.fade([delta=0.2]).
forked from curran's block: Standalone Scatter Plot

  
## index.html
<!DOCTYPE html>
<html>
  <head>
    <meta charset="utf-8">
    <title>D3 Example</title>
    <script src="https://d3js.org/d3.v4.min.js"></script>
    <script src="https://d3js.org/d3-scale-chromatic.v1.min.js"></script>
    <style>

      .mark {
        fill: currentColor;
        stroke: currentColor;
        fill-opacity: 0.3;
      }

    </style>
  </head>
  <body>
    <script>

      var outerWidth = 960,
          outerHeight = 500,
          margin = { left: -174, top: 10, right: 26, bottom: -236 },
          rMin = 2, // "r" stands for radius
          rMax = 33,
          strokeWeight = 0.1,
          xColumn = "sepal_length",
          yColumn = "petal_length",
          rColumn = "sepal_width",
          colorColumn = "species";

      var innerWidth  = outerWidth  - margin.left - margin.right,
          innerHeight = outerHeight - margin.top  - margin.bottom;

      var svg = d3.select("body").append("svg")
            .attr("width", outerWidth)
            .attr("height", outerHeight),
          g = svg.append("g")
            .attr("transform", "translate(" + margin.left + "," + margin.top + ")");

      var xScale = d3.scaleLinear().range([0, innerWidth]),
          yScale = d3.scaleLinear().range([innerHeight, 0]),
          rScale = d3.scaleLinear().range([rMin, rMax]),
          colorScale = d3.scaleOrdinal().range(d3.schemeDark2);

      var xAxis = d3.axisBottom()
      			.scale(xScale),
          yAxis = d3.axisLeft()
      			.scale(yScale)
            .ticks(5);

      function render(data){

        xScale.domain(d3.extent(data, function (d){ return d[xColumn]; }));
        yScale.domain(d3.extent(data, function (d){ return d[yColumn]; }));
        rScale.domain(d3.extent(data, function (d){ return d[rColumn]; }));

        var circles = g.selectAll("circle")
        	.data(data);
        circles.exit().remove();
        circles.enter()
          .append("circle")
          	.attr("class", "mark")
          .merge(circles)
            .attr("cx", function (d){ return xScale(d[xColumn]); })
            .attr("cy", function (d){ return yScale(d[yColumn]); })
            .attr("r",  function (d){ return rScale(d[rColumn]); })
            .attr("stroke-width", function (d){
              return rScale(d[rColumn]) * strokeWeight;
            })
            .attr("color", function (d){ return colorScale(d[colorColumn]); });
      }

      function type(d){
        d.sepal_length = +d.sepal_length;
        d.sepal_width  = +d.sepal_width;
        d.petal_length = +d.petal_length;
        d.petal_width  = +d.petal_width;
        return d;
      }

      d3.csv("iris.csv", type, render);

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

## iris.csv

          
            sepal_length
            sepal_width
            petal_length
            petal_width
            species

            
              5.1
              3.5
              1.4
              0.2
              setosa

            
              4.9
              3.0
              1.4
              0.2
              setosa

            
              4.7
              3.2
              1.3
              0.2
              setosa

            
              4.6
              3.1
              1.5
              0.2
              setosa

            
              5.0
              3.6
              1.4
              0.2
              setosa

            
              5.4
              3.9
              1.7
              0.4
              setosa

            
              4.6
              3.4
              1.4
              0.3
              setosa

            
              5.0
              3.4
              1.5
              0.2
              setosa

            
              4.4
              2.9
              1.4
              0.2
              setosa

            
              4.9
              3.1
              1.5
              0.1
              setosa

            
              5.4
              3.7
              1.5
              0.2
              setosa

            
              4.8
              3.4
              1.6
              0.2
              setosa

            
              4.8
              3.0
              1.4
              0.1
              setosa

            
              4.3
              3.0
              1.1
              0.1
              setosa

            
              5.8
              4.0
              1.2
              0.2
              setosa

            
              5.7
              4.4
              1.5
              0.4
              setosa

            
              5.4
              3.9
              1.3
              0.4
              setosa

            
              5.1
              3.5
              1.4
              0.3
              setosa

            
              5.7
              3.8
              1.7
              0.3
              setosa

            
              5.1
              3.8
              1.5
              0.3
              setosa

            
              5.4
              3.4
              1.7
              0.2
              setosa

            
              5.1
              3.7
              1.5
              0.4
              setosa

            
              4.6
              3.6
              1.0
              0.2
              setosa

            
              5.1
              3.3
              1.7
              0.5
              setosa

            
              4.8
              3.4
              1.9
              0.2
              setosa

            
              5.0
              3.0
              1.6
              0.2
              setosa

            
              5.0
              3.4
              1.6
              0.4
              setosa

            
              5.2
              3.5
              1.5
              0.2
              setosa

            
              5.2
              3.4
              1.4
              0.2
              setosa

            
              4.7
              3.2
              1.6
              0.2
              setosa

            
              4.8
              3.1
              1.6
              0.2
              setosa

            
              5.4
              3.4
              1.5
              0.4
              setosa

            
              5.2
              4.1
              1.5
              0.1
              setosa

            
              5.5
              4.2
              1.4
              0.2
              setosa

            
              4.9
              3.1
              1.5
              0.1
              setosa

            
              5.0
              3.2
              1.2
              0.2
              setosa

            
              5.5
              3.5
              1.3
              0.2
              setosa

            
              4.9
              3.1
              1.5
              0.1
              setosa

            
              4.4
              3.0
              1.3
              0.2
              setosa

            
              5.1
              3.4
              1.5
              0.2
              setosa

            
              5.0
              3.5
              1.3
              0.3
              setosa

            
              4.5
              2.3
              1.3
              0.3
              setosa

            
              4.4
              3.2
              1.3
              0.2
              setosa

            
              5.0
              3.5
              1.6
              0.6
              setosa

            
              5.1
              3.8
              1.9
              0.4
              setosa

            
              4.8
              3.0
              1.4
              0.3
              setosa

            
              5.1
              3.8
              1.6
              0.2
              setosa

            
              4.6
              3.2
              1.4
              0.2
              setosa

            
              5.3
              3.7
              1.5
              0.2
              setosa

            
              5.0
              3.3
              1.4
              0.2
              setosa

            
              7.0
              3.2
              4.7
              1.4
              versicolor

            
              6.4
              3.2
              4.5
              1.5
              versicolor

            
              6.9
              3.1
              4.9
              1.5
              versicolor

            
              5.5
              2.3
              4.0
              1.3
              versicolor

            
              6.5
              2.8
              4.6
              1.5
              versicolor

            
              5.7
              2.8
              4.5
              1.3
              versicolor

            
              6.3
              3.3
              4.7
              1.6
              versicolor

            
              4.9
              2.4
              3.3
              1.0
              versicolor

            
              6.6
              2.9
              4.6
              1.3
              versicolor

            
              5.2
              2.7
              3.9
              1.4
              versicolor

            
              5.0
              2.0
              3.5
              1.0
              versicolor

            
              5.9
              3.0
              4.2
              1.5
              versicolor

            
              6.0
              2.2
              4.0
              1.0
              versicolor

            
              6.1
              2.9
              4.7
              1.4
              versicolor

            
              5.6
              2.9
              3.6
              1.3
              versicolor

            
              6.7
              3.1
              4.4
              1.4
              versicolor

            
              5.6
              3.0
              4.5
              1.5
              versicolor

            
              5.8
              2.7
              4.1
              1.0
              versicolor

            
              6.2
              2.2
              4.5
              1.5
              versicolor

            
              5.6
              2.5
              3.9
              1.1
              versicolor

            
              5.9
              3.2
              4.8
              1.8
              versicolor

            
              6.1
              2.8
              4.0
              1.3
              versicolor

            
              6.3
              2.5
              4.9
              1.5
              versicolor

            
              6.1
              2.8
              4.7
              1.2
              versicolor

            
              6.4
              2.9
              4.3
              1.3
              versicolor

            
              6.6
              3.0
              4.4
              1.4
              versicolor

            
              6.8
              2.8
              4.8
              1.4
              versicolor

            
              6.7
              3.0
              5.0
              1.7
              versicolor

            
              6.0
              2.9
              4.5
              1.5
              versicolor

            
              5.7
              2.6
              3.5
              1.0
              versicolor

            
              5.5
              2.4
              3.8
              1.1
              versicolor

            
              5.5
              2.4
              3.7
              1.0
              versicolor

            
              5.8
              2.7
              3.9
              1.2
              versicolor

            
              6.0
              2.7
              5.1
              1.6
              versicolor

            
              5.4
              3.0
              4.5
              1.5
              versicolor

            
              6.0
              3.4
              4.5
              1.6
              versicolor

            
              6.7
              3.1
              4.7
              1.5
              versicolor

            
              6.3
              2.3
              4.4
              1.3
              versicolor

            
              5.6
              3.0
              4.1
              1.3
              versicolor

            
              5.5
              2.5
              4.0
              1.3
              versicolor

            
              5.5
              2.6
              4.4
              1.2
              versicolor

            
              6.1
              3.0
              4.6
              1.4
              versicolor

            
              5.8
              2.6
              4.0
              1.2
              versicolor

            
              5.0
              2.3
              3.3
              1.0
              versicolor

            
              5.6
              2.7
              4.2
              1.3
              versicolor

            
              5.7
              3.0
              4.2
              1.2
              versicolor

            
              5.7
              2.9
              4.2
              1.3
              versicolor

            
              6.2
              2.9
              4.3
              1.3
              versicolor

            
              5.1
              2.5
              3.0
              1.1
              versicolor

            
              5.7
              2.8
              4.1
              1.3
              versicolor

            
              6.3
              3.3
              6.0
              2.5
              virginica

            
              5.8
              2.7
              5.1
              1.9
              virginica

            
              7.1
              3.0
              5.9
              2.1
              virginica

            
              6.3
              2.9
              5.6
              1.8
              virginica

            
              6.5
              3.0
              5.8
              2.2
              virginica

            
              7.6
              3.0
              6.6
              2.1
              virginica

            
              4.9
              2.5
              4.5
              1.7
              virginica

            
              7.3
              2.9
              6.3
              1.8
              virginica

            
              6.7
              2.5
              5.8
              1.8
              virginica

            
              7.2
              3.6
              6.1
              2.5
              virginica

            
              6.5
              3.2
              5.1
              2.0
              virginica

            
              6.4
              2.7
              5.3
              1.9
              virginica

            
              6.8
              3.0
              5.5
              2.1
              virginica

            
              5.7
              2.5
              5.0
              2.0
              virginica

            
              5.8
              2.8
              5.1
              2.4
              virginica

            
              6.4
              3.2
              5.3
              2.3
              virginica

            
              6.5
              3.0
              5.5
              1.8
              virginica

            
              7.7
              3.8
              6.7
              2.2
              virginica

            
              7.7
              2.6
              6.9
              2.3
              virginica

            
              6.0
              2.2
              5.0
              1.5
              virginica

            
              6.9
              3.2
              5.7
              2.3
              virginica

            
              5.6
              2.8
              4.9
              2.0
              virginica

            
              7.7
              2.8
              6.7
              2.0
              virginica

            
              6.3
              2.7
              4.9
              1.8
              virginica

            
              6.7
              3.3
              5.7
              2.1
              virginica

            
              7.2
              3.2
              6.0
              1.8
              virginica

            
              6.2
              2.8
              4.8
              1.8
              virginica

            
              6.1
              3.0
              4.9
              1.8
              virginica

            
              6.4
              2.8
              5.6
              2.1
              virginica

            
              7.2
              3.0
              5.8
              1.6
              virginica

            
              7.4
              2.8
              6.1
              1.9
              virginica

            
              7.9
              3.8
              6.4
              2.0
              virginica

            
              6.4
              2.8
              5.6
              2.2
              virginica

            
              6.3
              2.8
              5.1
              1.5
              virginica

            
              6.1
              2.6
              5.6
              1.4
              virginica

            
              7.7
              3.0
              6.1
              2.3
              virginica

            
              6.3
              3.4
              5.6
              2.4
              virginica

            
              6.4
              3.1
              5.5
              1.8
              virginica

            
              6.0
              3.0
              4.8
              1.8
              virginica

            
              6.9
              3.1
              5.4
              2.1
              virginica

            
              6.7
              3.1
              5.6
              2.4
              virginica

            
              6.9
              3.1
              5.1
              2.3
              virginica

            
              5.8
              2.7
              5.1
              1.9
              virginica

            
              6.8
              3.2
              5.9
              2.3
              virginica

            
              6.7
              3.3
              5.7
              2.5
              virginica

            
              6.7
              3.0
              5.2
              2.3
              virginica

            
              6.3
              2.5
              5.0
              1.9
              virginica

            
              6.5
              3.0
              5.2
              2.0
              virginica

            
              6.2
              3.4
              5.4
              2.3
              virginica

            
              5.9
              3.0
              5.1
              1.8
              virginica

## thumbnail.png

      
    Raw
  

              thumbnail.png
	<!DOCTYPE html>
	<html>
	<head>
	<meta charset="utf-8">
	<title>D3 Example</title>
	<script src="https://d3js.org/d3.v4.min.js"></script>
	<script src="https://d3js.org/d3-scale-chromatic.v1.min.js"></script>
	<style>

	.mark {
	fill: currentColor;
	stroke: currentColor;
	fill-opacity: 0.3;
	}

	</style>
	</head>
	<body>
	<script>

	var outerWidth = 960,
	outerHeight = 500,
	margin = { left: -174, top: 10, right: 26, bottom: -236 },
	rMin = 2, // "r" stands for radius
	rMax = 33,
	strokeWeight = 0.1,
	xColumn = "sepal_length",
	yColumn = "petal_length",
	rColumn = "sepal_width",
	colorColumn = "species";

	var innerWidth = outerWidth - margin.left - margin.right,
	innerHeight = outerHeight - margin.top - margin.bottom;

	var svg = d3.select("body").append("svg")
	.attr("width", outerWidth)
	.attr("height", outerHeight),
	g = svg.append("g")
	.attr("transform", "translate(" + margin.left + "," + margin.top + ")");

	var xScale = d3.scaleLinear().range([0, innerWidth]),
	yScale = d3.scaleLinear().range([innerHeight, 0]),
	rScale = d3.scaleLinear().range([rMin, rMax]),
	colorScale = d3.scaleOrdinal().range(d3.schemeDark2);

	var xAxis = d3.axisBottom()
	.scale(xScale),
	yAxis = d3.axisLeft()
	.scale(yScale)
	.ticks(5);

	function render(data){

	xScale.domain(d3.extent(data, function (d){ return d[xColumn]; }));
	yScale.domain(d3.extent(data, function (d){ return d[yColumn]; }));
	rScale.domain(d3.extent(data, function (d){ return d[rColumn]; }));

	var circles = g.selectAll("circle")
	.data(data);
	circles.exit().remove();
	circles.enter()
	.append("circle")
	.attr("class", "mark")
	.merge(circles)
	.attr("cx", function (d){ return xScale(d[xColumn]); })
	.attr("cy", function (d){ return yScale(d[yColumn]); })
	.attr("r", function (d){ return rScale(d[rColumn]); })
	.attr("stroke-width", function (d){
	return rScale(d[rColumn]) * strokeWeight;
	})
	.attr("color", function (d){ return colorScale(d[colorColumn]); });
	}

	function type(d){
	d.sepal_length = +d.sepal_length;
	d.sepal_width = +d.sepal_width;
	d.petal_length = +d.petal_length;
	d.petal_width = +d.petal_width;
	return d;
	}

	d3.csv("iris.csv", type, render);

	</script>
	</body>
	</html>
sepal_length	sepal_width	petal_length	petal_width	species
5.1	3.5	1.4	0.2	setosa
4.9	3.0	1.4	0.2	setosa
4.7	3.2	1.3	0.2	setosa
4.6	3.1	1.5	0.2	setosa
5.0	3.6	1.4	0.2	setosa
5.4	3.9	1.7	0.4	setosa
4.6	3.4	1.4	0.3	setosa
5.0	3.4	1.5	0.2	setosa
4.4	2.9	1.4	0.2	setosa
4.9	3.1	1.5	0.1	setosa
5.4	3.7	1.5	0.2	setosa
4.8	3.4	1.6	0.2	setosa
4.8	3.0	1.4	0.1	setosa
4.3	3.0	1.1	0.1	setosa
5.8	4.0	1.2	0.2	setosa
5.7	4.4	1.5	0.4	setosa
5.4	3.9	1.3	0.4	setosa
5.1	3.5	1.4	0.3	setosa
5.7	3.8	1.7	0.3	setosa
5.1	3.8	1.5	0.3	setosa
5.4	3.4	1.7	0.2	setosa
5.1	3.7	1.5	0.4	setosa
4.6	3.6	1.0	0.2	setosa
5.1	3.3	1.7	0.5	setosa
4.8	3.4	1.9	0.2	setosa
5.0	3.0	1.6	0.2	setosa
5.0	3.4	1.6	0.4	setosa
5.2	3.5	1.5	0.2	setosa
5.2	3.4	1.4	0.2	setosa
4.7	3.2	1.6	0.2	setosa
4.8	3.1	1.6	0.2	setosa
5.4	3.4	1.5	0.4	setosa
5.2	4.1	1.5	0.1	setosa
5.5	4.2	1.4	0.2	setosa
4.9	3.1	1.5	0.1	setosa
5.0	3.2	1.2	0.2	setosa
5.5	3.5	1.3	0.2	setosa
4.9	3.1	1.5	0.1	setosa
4.4	3.0	1.3	0.2	setosa
5.1	3.4	1.5	0.2	setosa
5.0	3.5	1.3	0.3	setosa
4.5	2.3	1.3	0.3	setosa
4.4	3.2	1.3	0.2	setosa
5.0	3.5	1.6	0.6	setosa
5.1	3.8	1.9	0.4	setosa
4.8	3.0	1.4	0.3	setosa
5.1	3.8	1.6	0.2	setosa
4.6	3.2	1.4	0.2	setosa
5.3	3.7	1.5	0.2	setosa
5.0	3.3	1.4	0.2	setosa
7.0	3.2	4.7	1.4	versicolor
6.4	3.2	4.5	1.5	versicolor
6.9	3.1	4.9	1.5	versicolor
5.5	2.3	4.0	1.3	versicolor
6.5	2.8	4.6	1.5	versicolor
5.7	2.8	4.5	1.3	versicolor
6.3	3.3	4.7	1.6	versicolor
4.9	2.4	3.3	1.0	versicolor
6.6	2.9	4.6	1.3	versicolor
5.2	2.7	3.9	1.4	versicolor
5.0	2.0	3.5	1.0	versicolor
5.9	3.0	4.2	1.5	versicolor
6.0	2.2	4.0	1.0	versicolor
6.1	2.9	4.7	1.4	versicolor
5.6	2.9	3.6	1.3	versicolor
6.7	3.1	4.4	1.4	versicolor
5.6	3.0	4.5	1.5	versicolor
5.8	2.7	4.1	1.0	versicolor
6.2	2.2	4.5	1.5	versicolor
5.6	2.5	3.9	1.1	versicolor
5.9	3.2	4.8	1.8	versicolor
6.1	2.8	4.0	1.3	versicolor
6.3	2.5	4.9	1.5	versicolor
6.1	2.8	4.7	1.2	versicolor
6.4	2.9	4.3	1.3	versicolor
6.6	3.0	4.4	1.4	versicolor
6.8	2.8	4.8	1.4	versicolor
6.7	3.0	5.0	1.7	versicolor
6.0	2.9	4.5	1.5	versicolor
5.7	2.6	3.5	1.0	versicolor
5.5	2.4	3.8	1.1	versicolor
5.5	2.4	3.7	1.0	versicolor
5.8	2.7	3.9	1.2	versicolor
6.0	2.7	5.1	1.6	versicolor
5.4	3.0	4.5	1.5	versicolor
6.0	3.4	4.5	1.6	versicolor
6.7	3.1	4.7	1.5	versicolor
6.3	2.3	4.4	1.3	versicolor
5.6	3.0	4.1	1.3	versicolor
5.5	2.5	4.0	1.3	versicolor
5.5	2.6	4.4	1.2	versicolor
6.1	3.0	4.6	1.4	versicolor
5.8	2.6	4.0	1.2	versicolor
5.0	2.3	3.3	1.0	versicolor
5.6	2.7	4.2	1.3	versicolor
5.7	3.0	4.2	1.2	versicolor
5.7	2.9	4.2	1.3	versicolor
6.2	2.9	4.3	1.3	versicolor
5.1	2.5	3.0	1.1	versicolor
5.7	2.8	4.1	1.3	versicolor
6.3	3.3	6.0	2.5	virginica
5.8	2.7	5.1	1.9	virginica
7.1	3.0	5.9	2.1	virginica
6.3	2.9	5.6	1.8	virginica
6.5	3.0	5.8	2.2	virginica
7.6	3.0	6.6	2.1	virginica
4.9	2.5	4.5	1.7	virginica
7.3	2.9	6.3	1.8	virginica
6.7	2.5	5.8	1.8	virginica
7.2	3.6	6.1	2.5	virginica
6.5	3.2	5.1	2.0	virginica
6.4	2.7	5.3	1.9	virginica
6.8	3.0	5.5	2.1	virginica
5.7	2.5	5.0	2.0	virginica
5.8	2.8	5.1	2.4	virginica
6.4	3.2	5.3	2.3	virginica
6.5	3.0	5.5	1.8	virginica
7.7	3.8	6.7	2.2	virginica
7.7	2.6	6.9	2.3	virginica
6.0	2.2	5.0	1.5	virginica
6.9	3.2	5.7	2.3	virginica
5.6	2.8	4.9	2.0	virginica
7.7	2.8	6.7	2.0	virginica
6.3	2.7	4.9	1.8	virginica
6.7	3.3	5.7	2.1	virginica
7.2	3.2	6.0	1.8	virginica
6.2	2.8	4.8	1.8	virginica
6.1	3.0	4.9	1.8	virginica
6.4	2.8	5.6	2.1	virginica
7.2	3.0	5.8	1.6	virginica
7.4	2.8	6.1	1.9	virginica
7.9	3.8	6.4	2.0	virginica
6.4	2.8	5.6	2.2	virginica
6.3	2.8	5.1	1.5	virginica
6.1	2.6	5.6	1.4	virginica
7.7	3.0	6.1	2.3	virginica
6.3	3.4	5.6	2.4	virginica
6.4	3.1	5.5	1.8	virginica
6.0	3.0	4.8	1.8	virginica
6.9	3.1	5.4	2.1	virginica
6.7	3.1	5.6	2.4	virginica
6.9	3.1	5.1	2.3	virginica
5.8	2.7	5.1	1.9	virginica
6.8	3.2	5.9	2.3	virginica
6.7	3.3	5.7	2.5	virginica
6.7	3.0	5.2	2.3	virginica
6.3	2.5	5.0	1.9	virginica
6.5	3.0	5.2	2.0	virginica
6.2	3.4	5.4	2.3	virginica
5.9	3.0	5.1	1.8	virginica