hierarchy to forcejson, nodes and links with source, target

function HierarchyToForcelayout(root,groups,values){
    
    //Change if you want.
    groups = groups || "depth";
    values = values || "size";
    
    // Make ierarchy structure. 
    var test = hierarchy(root);
    
    var forcejson = { "nodes": [], "links": []};
    
    //Get index for links target and source.
    var name_index = {};
    test.forEach(function(d,i){
        
        name_index[d.name] =  i;
        
    });
    
    // Construct nodes and links for force layout. 
    test.forEach(function(d,i) {
        var temp_node = {name: d.name, group: d[groups]};

        forcejson.nodes.push(temp_node);
        
        if(d.children) {
            d.children.forEach(function(c){
                var temp_link = {source: i, target:name_index[c.name], value:c[values]};

                forcejson.links.push(temp_link);
            })
        }
    });
    
    return forcejson;
      
};

Parse csv , json to D3 format

#1 d3.csv to [{x:~},{y:~}]

var makeData = function(d,country){
var list = [];

d.forEach(function(datum){
var obj = {};
obj["x"]= parseInt(datum.id);
obj["y"] = parseInt(datum[country]);

list.push(obj);
})

return list;
};