D3 Examples - 4.7 scatter plot

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<!DOCTYPE html>
<meta charset="utf-8">
<html>
<head>
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<!-- Google fonts reference-->
<link href="https://fonts.googleapis.com/css2?family=Montserrat+Alternates:ital,wght@0,100;0,200;0,300;0,400;0,500;0,600;0,700;0,800;0,900;1,100;1,200;1,300;1,400;1,500;1,600;1,700;1,800;1,900&family=Montserrat:ital,wght@0,100;0,200;0,300;0,400;0,500;0,600;0,700;0,800;0,900;1,100;1,200;1,300;1,400;1,500;1,600;1,700;1,800;1,900&family=Roboto:ital,wght@0,100;0,300;1,100;1,300&display=swap" rel="stylesheet">
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<!-- Connecting with D3 library-->
<script src="https://d3js.org/d3.v4.min.js" charset="utf-8"></script>
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<style>
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/*Defining text stylings*/
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#h1 {
  font-size:30px;
  margin:30px 0px 0px 20px;
  color:#f5fa91;
  font-family:'Montserrat Alternates', sans-serif;
  font-weight:300;
}
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#link {
    font-family:'Montserrat Alternates', sans-serif;
  font-weight:200;
  font-size:10px;
    margin:5px 0px 0px 22px;
  color:white;
}
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a:link, a:visited, a:active {
    text-decoration: none;
  color:white;
  border-bottom:1.5px dotted white;
}
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body {
  background-color:#011227;
}
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/*Defining chart stylings*/
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circle {
  fill:#8ff798;
  stroke:#8ff798;
  stroke-width:1;
  stroke-opacity:0.8;
  fill-opacity:0.6;
}
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</style>
</head>
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<body>
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<!-- Creating the headlines -->
<p id="h1">SCATTER PLOT</p>
<div id="link">by
<a href="https://slides.com/sandravizmad">SANDRA</a></div>  
  
<script>
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//Margin conventions
var m = {top:100, right:50, bottom:50, left:40}
    w = 800 - m.left - m.right,
    h = 800 - 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})`);
​
//Data loading
d3.csv(
  "https://gist.githubusercontent.com/sandravizz/f269cff704036fbdeb9b376a478a6c62/raw/d30f4ba8398b5464249a9c911a94503ed359f467/Tax%2520revenue%2520by%2520country%25202018",
  d =>
  {
​
  //Draw the circles
  svg.selectAll("circle")
        .data(d)
      .enter()
      .append("circle")
      .attr("r", 15)
        .attr("cx", d => d.Percent_GDP*8)
      .attr("cy", d => d.MLN_USD);
});
​
</script>
</body>
</html>
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