text: // Draws 60 lat/long lines per degree using the pixelLonLat() function.
  
  // Create an image in which the value of each pixel is its
  // coordinates in minutes.
  var img = ee.Image.pixelLonLat().multiply(60.0);
  
  // Get the decimal part and check if it's less than a small delta.
  img = img.subtract(img.floor()).lt(0.05);
  
  // The pixels less than the delta are the grid, in both directions.
  var grid = img.select('latitude').or(img.select('longitude'));
  
  // Draw the grid.
  Map.setCenter(-122.09228, 37.42330, 12);
  Map.addLayer(grid.updateMask(grid), {palette: '008000'}, 'Graticule');
  