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<head>
<meta charset="utf-8">
<script src="https://d3js.org/d3.v4.min.js"></script>
<style>
body { margin:0;position:fixed;top:0;right:0;bottom:0;left:0; }
</style>
</head>
<body>
<script>
var margin = {top: 20, right:10, bottom: 20, left: 10}
var width = 960 - margin.left -margin.right,
height = 500 - margin.top - margin.bottom;
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 +")")
var x = d3.scaleLinear()
.range([0,width]);
var y = d3.scaleLinear()
.range([height, 0]);
var r = d3.scaleSqrt()
.range([2, 10]);
var color = d3.scaleOrdinal(d3.schemeCategory20);
var xAxis = d3.axisBottom().scale(x);
var yAxis = d3.axisLeft().scale(y);
var tooltip = d3.select("body").append("div")
.attr("class", "tooltip")
.style("opacity", 0);
function scatterplot(el, data, h, w, dim, var_x, var_y, var_c, var_r){
var svg = d3.select("body").append("svg")
.attr("width", w + margin.left + margin.right)
.attr("height", h + margin.top + margin.bottom).append("g")
.attr("transform", "translate("+ margin.left + "," + margin.top +")")
var x = d3.scaleLinear()
.range([0,width]);
var y = d3.scaleLinear()
.range([height, 0]);
var r = d3.scaleSqrt()
.range([2, 10]);
var color = d3.scaleOrdinal(d3.schemeCategory20);
var xAxis = d3.axisBottom().scale(x);
var yAxis = d3.axisLeft().scale(y);
var tooltip = d3.select("body").append("div")
.attr("class", "tooltip")
.style("opacity", 0);
x.domain(d3.extent(data, function(d) {return d. sepal_length}))
y.domain(d3.extent(data, function(d) {return d. sepal_width}))
r.domain(d3.extent(data, function(d) {return d. petal_length}))
color.domain(d3.extent(data, function(d) {return d.species}))
console.log(data)
svg.selectAll(".dot").data(data).enter()
.append("circle")
.attr("class", "dot")
.attr("cx", function(d) {return x(d.sepal_length);})
.attr("cy", function(d) {return y(d.sepal_width);})
.attr("r", function(d) {return r(d.petal_length);})
.style("fill", function(d) {return color(d.species);})
var legend = svg.selectAll(".legend")
.data(color.domain())
.enter().append("g")
.attr("class", "legend")
.attr("transform", function(d, i) { return "translate(0," + i * 20 + ")"; });
legend.append("rect")
.attr("x", width - 18)
.attr("width", 18)
.attr("height", 18)
.style("fill", color);
legend.append("text")
.attr("x", width - 24)
.attr("y", 9)
.attr("dy", ".35em")
.style("text-anchor", "end")
.text(function(d) { return d; });
}
d3.csv("iris.csv",function(error, data){
scatterplot(d3.select("body", 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
});
});
</script>
</body>
https://d3js.org/d3.v4.min.js