initSVGObject = () => {
const obj = {};
obj.paths = densityContourPaths;
obj.depths = densityContourPaths.map((d,i) => i * 2)
obj.colors = densityContourPaths.map((d,i) => colorScale(i))
obj.strokes = densityContourPaths.map((d,i) => colorScale(i))
obj.center = { x: 150, y: 100 };
return obj;
}