let margin = 40,
    width = 950,
    height = 490,
    domainWidth = width - 2 * margin,
    domainHeight = height - 2 * margin;

// Graph render
let graph = d3.select('body').append('svg')
		.attr('width', width)
    .attr('height', height)
    .classed('box', true)
	.append('g')
    .attr('transform', `translate(${margin}, ${margin})`);