/**
* @param {string} message
- * @private
*/
Dygraph.error = function(message) {
Dygraph.log(Dygraph.ERROR, message);
* @param {!Object} self
* @param {!Object} o
* @return {!Object}
- * @private
*/
Dygraph.update = function(self, o) {
if (typeof(o) != 'undefined' && o !== null) {