scatterplot using Iris dataset

Built with blockbuilder.org

forked from romsson's block: Scatterplot Iris (d3.v4)

forked from romsson's block: Coordinated Scatterplot Iris (d3.v4)

forked from romsson's block: Matrix Scatterplot Iris (d3.v4)

<!DOCTYPE html>
<meta charset="utf-8">
<style>

body {
  font: 10px sans-serif;
}

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

.dot {
  stroke: #000;
  stroke-width: .5px;
}

.tooltip {
	position: absolute;
	width: 200px;
	height: 28px;
	pointer-events: none;
}

.chart {
  display: inline-block;
  height: 300px;
  width: 400px;
  margin: 30px;
}
  
.container {
  display: grid;
  grid-column-gap: 0px;
  grid-template-columns: auto auto auto auto;
  padding: 10px;
}

</style>
<body>
  
<div align="center">
Scatterplot Matrix using Iris Dataset
</div>
  <div class="container" style="float: left;"></div>
  <div class="legend" style="float: left;"></div>
<script src="https://d3js.org/d3.v4.min.js"></script>

var margin = {top: 10, right: 10, bottom: 20, left: 20},
    width = 400 - margin.left - margin.right,
    height = 300 - margin.top - margin.bottom;

var color = d3.scaleOrdinal(d3.schemeCategory20);

var tooltip = d3.select("body").append("div")
					.attr("class", "tooltip")
					.style("opacity", 0);

function scatterplot(el, data, w, h, var_x, var_y, var_r, var_color) {

var x = d3.scaleLinear()
    .range([0, w]);

var y = d3.scaleLinear()
      .range([h, 0]);

var r = d3.scaleSqrt()
      .range([1,3]);

// https://observablehq.com/@d3/axis-ticks
  var xAxis = d3.axisBottom()
	    .ticks(2)
      .scale(x);

var yAxis = d3.axisLeft()
  		 .ticks(5)
      .scale(y);

x.domain(d3.extent(data, function(d){
		return d[var_x];
	})).nice();

y.domain(d3.extent(data, function(d){
		return d[var_y];
	})).nice();

r.domain(d3.extent(data, function(d){
		return d[var_r];
	})).nice();

var svg = el.append("svg")
    .attr("width", w + margin.left + margin.right)
    .attr("height", h + margin.bottom + margin.top)
  .append("g")
    .attr("transform", "translate(" + margin.left + "," + margin.top + ")");
  
  svg.append('g')
    .attr('transform', 'translate(0,' + h + ')')
    .attr('class', 'x axis')
    .call(xAxis);
  
  svg.append('g')
    .attr('transform', 'translate(0,0)')
    .attr('class', 'y axis')
    .call(yAxis);

svg.selectAll(".dot")
    .data(data)
  .enter().append("circle")
    .attr("class", "dot")
    .attr("r", function(d) { return r(d[var_r]); })
    .attr("cx", function(d) { return x(d[var_x]); })
    .attr("cy", function(d) { return y(d[var_y]); })
    .style("fill", function(d) { return color(d[var_color]); })
    .on("mouseover", function(d){
			// highlight on
    	d3.selectAll(".dot").filter(function(e) {
        return e === d;
      })
      .style("stroke-width", 10)
		 })
		.on("mouseout", function(d){
    	d3.selectAll(".dot").filter(function(e) {
        return e === d;
      })
      .style("stroke-width", .5)
		})
		.on("click", function(d){
			// selection on/off
		});
  
 }
  
d3.csv('iris.csv', function(error, data){
	data.forEach(function(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;
	});

var dims = ["sepal_length", "sepal_width", "petal_width", "petal_length"];
  
dims.forEach(function(d) {
  
  dims.forEach(function(e) {
    
		scatterplot(d3.select(".container").append("div"), data, width/dims.length, height/dims.length, d, e, "petal_length", "species")
    
  });
})

var clicked = null

// color.domain()
  var legend = d3.select(".legend").append("svg")
      .attr("width", 200)
      .attr("height", 400)
  .selectAll("g")
    .data(color.domain())
  .enter().append("g")
    .attr("transform", function(d, i) { return "translate(0," + i * 20 + ")"; })

legend.append("rect")
    .style("fill", function(d) { return color(d); })
		.attr("width", 20)
		.attr("height", 20)
  		.on("click", function(d) {

// Sets the current cateogry opacity
      	d3.selectAll(".symbol").style("opacity", 1)
          
   			if(clicked !== d) {
               
          d3.selectAll(".symbol")
            .filter(function(e) {
            return e.species !== d
          })
          .style("opacity", 0.1);
          
          // memorize the clicked category
          clicked = d;
          
        } else {
          
          // reset
          clicked = null;
        } 
  	});
 
  legend.append("text")
    //  .attr("x", width - 24)
      .attr("y", 9)
        .attr("dx", 20)
      .attr("dy", ".35em")
  //    .style("text-anchor", "end")
      .text(function(d) { return d; });
  
  
});
  
</script>

https://d3js.org/d3.v4.min.js