sunburst resets to root view on refresh

[allenday]

if user is zoomed in when a refresh is triggered, chart refreshes but the zoom state is not preserved. can this be fixed?

[allenday]

@Firedrops want to take this one?

[Firedrops]

Seems feasible, but it will take a me a day or 2 to learn d3. Our visualizer also has a very different structure/script compared to other examples on bl.ocks, will need to wrap my head around this. If anyone else is keen on picking it up, I've found an example that might have implemented that functionality.

var node;
d3.json("/d/4063550/flare.json", function(error, root) {
  node = root;
  var path = svg.datum(root).selectAll("path")
      .data(partition.nodes)
    .enter().append("path")
      .attr("d", arc)
      .style("fill", function(d) { return color((d.children ? d : d.parent).name); })
      .on("click", click)
      .each(stash);
  d3.selectAll("input").on("change", function change() {
    var value = this.value === "count"
        ? function() { return 1; }
        : function(d) { return d.size; };
    path
        .data(partition.value(value).nodes)
      .transition()
        .duration(1000)
        .attrTween("d", arcTweenData);
  });
  function click(d) {
    node = d;
    path.transition()
      .duration(1000)
      .attrTween("d", arcTweenZoom(d));
  }
});
d3.select(self.frameElement).style("height", height + "px");