d3.csv("resources/data/claims.csv").then(function(data) {
  dataViz(data);
});

function dataViz(incomingData) {

  var claimsData = incomingData; // Parse data to create sub selection boxes


  // Create <option> elements based on three keys above

  var caseDistributionByPhysicianByPayorData = d3.nest().key(d=>d.responsible_physician).key(d=>d.payor_code).sortKeys(d3.ascending).entries(claimsData);
  console.log(caseDistributionByPhysicianByPayorData);
}