html, body, #container {

    width: 100%;

    height: 100%;

    margin: 0;

    padding: 0;

}

anychart.onDocumentReady(function() {

    // create chart

    chart = anychart.surface()

    // set data

    chart.data(generateData(plane));

​

    // set mesh stroke

    chart.stroke({color: '#ef6c00', thickness: 1, dash: '3 3'});

​

    // display chart

    chart.container('container').draw();

});

// generate a data set from function

var generateData = function(z_function) {

  var max_val = 5;

  var step = 2;

  var output = [];

  for (var x = -max_val; x <= max_val; x += step) {

    for (var y = -max_val; y <= max_val; y += step) {

      output.push([x, y, z_function(x, y)]);

    }

  }

  return output;

};

// plane function

var plane = function(x, y) {

  return x + y;

};