+ * The user has provided their data as a pre-packaged JS array. If the x values
+ * are numeric, this is the same as dygraphs' internal format. If the x values
+ * are dates, we need to convert them from Date objects to ms since epoch.
+ * @param {Array.<Object>} data
+ * @return {Array.<Object>} data with numeric x values.
+ */
+Dygraph.prototype.parseArray_ = function(data) {
+ // Peek at the first x value to see if it's numeric.
+ if (data.length == 0) {
+ this.error("Can't plot empty data set");
+ return null;
+ }
+ if (data[0].length == 0) {
+ this.error("Data set cannot contain an empty row");
+ return null;
+ }
+
+ if (this.attr_("labels") == null) {
+ this.warn("Using default labels. Set labels explicitly via 'labels' " +
+ "in the options parameter");
+ this.attrs_.labels = [ "X" ];
+ for (var i = 1; i < data[0].length; i++) {
+ this.attrs_.labels.push("Y" + i);
+ }
+ }
+
+ if (MochiKit.Base.isDateLike(data[0][0])) {
+ // Some intelligent defaults for a date x-axis.
+ this.attrs_.xValueFormatter = Dygraph.dateString_;
+ this.attrs_.xTicker = Dygraph.dateTicker;
+
+ // Assume they're all dates.
+ var parsedData = MochiKit.Base.clone(data);
+ for (var i = 0; i < data.length; i++) {
+ if (parsedData[i].length == 0) {
+ this.error("Row " << (1 + i) << " of data is empty");
+ return null;
+ }
+ if (parsedData[i][0] == null
+ || typeof(parsedData[i][0].getTime) != 'function') {
+ this.error("x value in row " << (1 + i) << " is not a Date");
+ return null;
+ }
+ parsedData[i][0] = parsedData[i][0].getTime();
+ }
+ return parsedData;
+ } else {
+ // Some intelligent defaults for a numeric x-axis.
+ this.attrs_.xValueFormatter = function(x) { return x; };
+ this.attrs_.xTicker = Dygraph.numericTicks;
+ return data;
+ }
+};
+
+/**
projects / dygraphs.git / blobdiff