gavi

/*
  As you read the data, use Object.keys() method to extract the column names. Might be useful for binding dropdowns.
*/

var columns=null;
d3.csv('nutdata.csv').row(function(row){
    if(columns==null){
        columns=Object.keys(row);
        columns=columns.slice(2,48); //Optional - to remove columns you dont need
    }