nodes circle again

<!DOCTYPE html>
<html lang="en">
	<head>
		<meta charset="utf-8">
		<title>Mapa Panamá</title>
 		<script src="https://d3js.org/d3.v4.js"></script>
 		<script src="d3-tip.js"></script>
 		<link href="https://fonts.googleapis.com/css?family=Varela+Round" rel="stylesheet">  		
		<style type="text/css">

.link.politica {
			fill: none;
  			stroke: green;
  			stroke-opacity: .1;			
		}

.link.social {
			fill: none;
  			stroke: blue;
  			stroke-opacity: .1;			
		}

.link.economica {
			fill: none;
  			stroke: red;
  			stroke-opacity: .1;			
		}

.link.politica-social{
			fill: none;
			stroke: aqua;
			stroke-opacity: .1;
		}

.link.politica-economica{
			fill: none;
			stroke: yellow;
			stroke-opacity: .1;
		}

.link.social-economica{
			fill: none;
			stroke: purple;
			stroke-opacity: .1;
		}

.link.politica-social-economica{
			fill: none;
			stroke: black;
			stroke-opacity: .1;
		}

.nodos.gobierno {
			fill: #4f8c9d;
						
		}

.nodos.patrimonio {
			fill: #a7dcf9;
			
		}

.nodos.planeacion{
			fill: #154975;
			
		}

.nodos.ong{
			fill: #1cf1a3;
			
		}

.nodos.gremios{
			fill: #0b5313;
			
		}

.nodos.academia{
			fill: #99d683;
		}

.nodos.comunidad{
			fill: #359721;
			
		}

.nodos.privado{
			fill: #1ceaf9;
			
		}

.nodos.medios{
			fill: #5f4ac2;
			
		}

.nodos.otros{
			fill: #ccabf0;
			
		}

text{
			font-size: 9px;
			font-family: "Varela Round", sans-serif;
			opacity: 0.5;
		}

.d3-tip {
			line-height: 1;
			font-weight: bold;
			font-family: 'Varela Round', sans-serif;
			text-align: center;
			font-size: 10px;
			padding: 12px;
			background: rgba(0, 0, 0, 0.8);
			color: #fff;
			border-radius: 1px;
		}

/* Creates a small triangle extender for the tooltip */
		.d3-tip:after {
			box-sizing: border-box;
			display: inline;
			font-size: 10px;
			width: 100%;
			line-height: 1;
			color: rgba(0, 0, 0, 0.8);
			content: "\25BC";
			position: absolute;
			text-align: center;
		}

/* Style northward tooltips specifically */
    	.d3-tip.n:after {
      		margin: -2px 0 0 0;
      		top: 100%;
      		left: 0;
    	}

</style>
	</head>
	<body>
		<script src="panama_nodos_circulo_6.js"></script>
	</body>
</html>

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