4.9 scatter plot | log axis

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<head>

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<script src="https://d3js.org/d3.v4.min.js" charset="utf-8"></script>

<style>

/*Defining text stylings*/

#h1 {
  font-size:30px;
  margin:30px 0px 0px 20px;
  color:#f5fa91;
  font-family:'Montserrat Alternates', sans-serif;
  font-weight:300;
}

#link {
	font-family:'Montserrat Alternates', sans-serif;
  font-weight:200;
  font-size:10px;
	margin:5px 0px 0px 22px;
  color:white;
}

a:link, a:visited, a:active {
	text-decoration: none;
  color:white;
  border-bottom:1.5px dotted white;
}

body {
  background-color:#011227;
}

/*Defining axis stylings*/

.y-axis text, .x-axis text {
  font-family:'Montserrat Alternates', sans-serif;
  font-weight:400;
  font-size:10px;
  opacity:1;
  fill:white;
}

.x-axis path {
  fill:none;
  stroke-width:0;
  stroke-opacity:1;
  stroke:white;
}

.y-axis path {
  fill:none;
  stroke-width:0;
  stroke-opacity:1;
  stroke:white;
}

.y-axis line {
  fill:none;
  stroke-width:0.1;
  stroke-opacity:1;
  stroke:white;
  stroke-dasharray:2;
}

.x-axis line {
  fill:none;
  stroke-width:0;
  stroke-opacity:1;
  stroke:white;
  stroke-dasharray:2;
}

/*Defining chart style properties*/

circle {
	fill:#f5fa91;
  opacity:0.5;
}

</style>
</head>

<body>
 

<p id="h1">PERSONALISED AXES</p>
<div id="link">by
<a href="https://slides.com/sandravizmad">SANDRA</a></div>  
  
<script>

//Margin conventions
var m = {top:100, right:50, bottom:50, left:40}
    w = 700 - m.left - m.right,
    h = 700 - m.top - m.bottom;

//Container
var svg = d3.select("body")
    .append("svg")
    .attr("width", w + m.left + m.right)
    .attr("height", h + m.top + m.bottom)
    .append("g")
		.attr("transform", `translate(${m.left}, ${m.top})`);

//Define the format
var formatNumber = d3.format(".2s");

//Data loading
d3.tsv(
  "https://gist.githubusercontent.com/sandravizz/8fb184d477565dd7e9ada471fe41db7f/raw/775829eb551019b26b16acc8c1a99243e8d1c0d2/diamonds%2520tsv",
  type,
  data => {

//X scale
  var x = d3.scaleLinear()
      .domain(d3.extent(data, d => d.carat))
      .range([0, w]);

//Color Scale
var c = d3.scaleLog()
    .domain(d3.extent(data, d => d.price))
    .range(['#8ff798', '#85f6fa']);

//Y scale
  var y = d3.scaleLog()
      .domain(d3.extent(data, d => d.price))
      .rangeRound([h, 0]);

//Draw the circles
  svg.selectAll("circle")
    	.data(data)
    	.enter()
    	.append("circle")
      .style('fill', d => c(d.price))
    	.attr("cx", d => x(d.carat))
    	.attr("cy", d => y(d.price))
    	.attr("r",1);

//X axis
  svg.append("g")
    	.attr("class", "x-axis")
    	.attr("transform", `translate(0, ${h})`)
    	.call(d3.axisBottom()
    					 .scale(x)
    					 .ticks(5)
               .tickSize(-h)
            	 .tickPadding(20));

//Y axis
  svg.append("g")
    	.attr("class","y-axis")
    	.attr("transform",`translate(0,0)`)
    	.call(d3.axisLeft()
    					 .scale(y)
               .tickValues([300, 500, 1000, 2000, 4000, 6000, 8000, 10000, 12000, 14000, 16000, 18000])
               .tickSize(-w)
            	 .tickPadding(20)
               .tickFormat(formatNumber));

});

//Data format
function type(d) {
  d.carat = +d.carat;
  d.price = +d.price;
  return d;
}

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

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