Function position

explainshell/web/static/js/d3.v3.js:5325–5329

(dimension, size)

      charges = [];
      if (typeof charge === "function") for (i = 0; i < n; ++i) charges[i] = +charge.call(this, nodes[i], i); else for (i = 0; i < n; ++i) charges[i] = charge;
      function position(dimension, size) {
        var neighbors = neighbor(i), j = -1, m = neighbors.length, x;
        while (++j < m) if (!isNaN(x = neighbors[j][dimension])) return x;
        return Math.random() * size;
      }
      function neighbor() {
        if (!neighbors) {
          neighbors = [];