d3.js Scatter test page

forked from 1wheel's block: Scatter I

updated to d3.js.v4 by annelid

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

body {
  font: 10px sans-serif;
}

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

.dot {
  stroke: none;
  opacity: 0.6;
}

.x {
  color: red;
}

div.tooltip {
  position: absolute;
  text-align: center;
  font: 12px;
  padding: 6px;
  background: #F0F0F0;
  border: thin lightsteelblue;
  border-radius: 8px;
  pointer-events: none;
}

.grid line {
  stroke: lightgrey;
  stroke-opacity: 0.7;
  shape-rendering: crispEdges;
}

.grid path {
  stroke-width: 0;
}

</style>
<body>

<script src="//d3js.org/d3.v4.min.js"></script>

// link to the data
  d3.tsv("test-data.tsv", function(error, data) {

// 'clean' the data and add a horizontal jitter
  data.forEach(function(d) {
  	d.score = +d.score;
  	d.jitter = 0.05+(Math.random())*0.25;
  	if (d.type == "Alpha") {d.jitter = 0-d.jitter};
  	d.category = +(d.category);
  });
  
  // set up the chart  
  var margin = {top: 20, right: 20, bottom: 30, left: 40},
      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 + ")");

// gridlines in x axis function
    function make_x_gridlines() {		
        return d3.axisBottom(x)
            .ticks(5)
    }
  
  var x = d3.scaleLinear()
    .range([0, width]);

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

var color = d3.scaleOrdinal(d3.schemeCategory10);

var xAxis = d3.axisBottom()
    .scale(x)
    .ticks(5);

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

x.domain([0.1,5.9]);
  y.domain([0,2600]);

// add the X gridlines
  svg.append("g")			
      .attr("class", "grid")
      .attr("transform", "translate(0," + height + ")")
      .call(make_x_gridlines()
          .tickSize(-height)
          .tickFormat("")
      )

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

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("Score")

// add the dots   
  svg.selectAll(".dot")
      .data(data)
    .enter().append("circle")
      .attr("class", "dot")
      .attr("r", 8)
      .attr("cx", function(d) { return x(d.category+d.jitter); })
      .attr("cy", function(d) { return y(d.score); })
      .style("fill", function(d) { return color(d.type); })
      .on("mouseover", function(d) {
        div.transition()
            .duration(200)
            .style("opacity", .9);
        div.html(d.category+" | "+d.score+" | "+d.type)
          .style("left", (d3.event.pageX) + "px")
          .style("top" , (d3.event.pageY - 28) + "px");
        })
       
      .on("mouseout", function(d) {
       div.transition()
         .duration(500)
         .style("opacity", 0);
       });

// add a 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 + ")"; });

legend.append("circle")
      .attr("cx", width - 8)
      .attr("cy", 9)
      .attr("r", 8)
      .attr("opacity",0.6)
      .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; });
});

</script>

https://cdnjs.cloudflare.com/ajax/libs/d3/3.4.6/d3.min.js

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