scatterplot.js

d3.select(window).on("resize", resize);
var margin = {top: 20, right: 20, bottom: 30, left: 40};

var viewWidth = window.innerWidth;
var viewHeight = window.innerHeight;

var width = viewWidth - margin.left - margin.right;
var height = viewHeight - margin.top - margin.bottom;

data = boat_data.boats;

var x = d3.scaleLinear()
  .range([0, width])
  .domain(d3.extent(data, d => d.x))

var y = d3.scaleLinear()
  .range([height, 0])
  .domain([0, d3.max(data, d => d.y)])

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

function drawScatterplot() {
  svg.selectAll(".dot")
    .data(data).enter().append("circle")
    .attr("class", "dot")
    .attr("r", 5)
    .attr("cx", d => x(d.x) )
    .attr("cy", d => y(d.y) )

  svg.append("g")
    .attr("class", "x-axis")
    .attr("transform", "translate(0," + height + ")")
    .call(d3.axisBottom(x))
  
  svg.append("g")
    .attr("class", "y-axis")
    .call(d3.axisLeft(y))

}

function resize() {
  viewWidth = window.innerWidth
  viewHeight = window.innerHeight

  width = viewWidth - margin.left - margin.right;
  height = viewHeight - margin.top - margin.bottom;

  var s = d3.select("svg")
    .attr("width", viewWidth)
    .attr("height", viewHeight)

  x.range([0, width])
  y.range([height, 0])

  s.select(".x-axis")
    .attr("transform", "translate(0," + height + ")")
    .call(d3.axisBottom(x))
  
  s.select(".y-axis")
    .call(d3.axisLeft(y))

  s.selectAll(".dot")
    .attr("r", 5)
    .attr("cx", d => x(d.x) )
    .attr("cy", d => y(d.y) )
}


drawScatterplot();


//////////////////////////////////////////////////////////////////////////////////
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////////////////////    ADDITIONAL TASKS   ///////////////////////////////////////
//////////////////////////////////////////////////////////////////////////////////
//////////////////////////////////////////////////////////////////////////////////
/*
Once that you have implemented your basic scatterplot you can work on new features
  * Color coding of the points based on a third attribute
  * Legend for the third attribute with color scale
  * Interactive selection of the 3 attributes visualized in the scatterplot
  * Resizing of the window updates the scatterplot
*/