+/**
+ * Return the y-axis for a given series, specified by name.
+ */
+DygraphOptions.prototype.axisForSeries = function(seriesName) {
+ return this.series_[seriesName].yAxis;
+}
+
+/**
+ * Returns the options for the specified axis.
+ */
+DygraphOptions.prototype.axisOptions = function(yAxis) {
+ return this.axes_[yAxis].options;
+}
+
+/**
+ * Return the series associated with an axis.
+ */
+DygraphOptions.prototype.seriesForAxis = function(yAxis) {
+ return this.axes_[yAxis].series;
+}
+
+/**
+ * Return the list of all series, in their columnar order.
+ */
+DygraphOptions.prototype.seriesNames = function() {
+ return this.labels_;
+}
+
+/* Are we using this? */
+/**
+ * Return the index of the specified series.
+ * @param {string} series the series name.
+ */
+DygraphOptions.prototype.indexOfSeries = function(series) {
+ return this.series_[series].idx;
+}