Rotation Example

<!DOCTYPE html>
<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>
    // Feel free to change or delete any of the code you see in this editor!
    var svg = d3.select("body").append("svg")
      .attr("width", 300)
      .attr("height", 300)
    	.style("margin",200)
			.style("overflow","visible")
    	.style("border","1px solid black")
    
    svg.append("text")
      .attr("transform","rotate(45) translate(50,50)")
      .text("translate(50,50)")
      .attr("y", 0)
      .attr("x", 0)
      .attr("font-size", 16)
      .attr("font-family", "monospace")
      .attr("fill", "red")

svg.append("text")
      .text("(x=50,y=50)")
      .attr("transform","rotate(45))")
      .attr("y", 50)
      .attr("x", 50)
      .attr("font-size", 16)
      .attr("font-family", "monospace")
    
    svg.append("circle")
      .attr("transform","rotate(45) translate(50,50)")
      .attr("cy", 0)
      .attr("cx", 0) 
      .attr("r", 3)
      .attr("fill", "red")
    
    svg.append("circle") 
      .attr("transform","rotate(45))")
      .attr("cy", 50)
      .attr("cx", 50) 
      .attr("r", 3)
      .attr("fill", "black")

</script>
</body>

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