basic3.js

anychart.onDocumentReady(function () {
  anychart.data.loadJsonFile( 'https://gist.githubusercontent.com/shacheeswadia/b0d6b34a1910359e0e1a8fc0c84019a6/raw/4ab92ca6361f1bc9875d2854e2e1271bc991f86b/surfaceAreaData.json',
    function (data) {
      // processing of the data
      var result = [];
      for (var x = 0; x < data.x.length; x++) {
        for (var y = 0; y < data.y.length; y++) {
          result.push([x, data.y.sort()[y], data.z[x][y]]);
        }
      }
    }
  );
});