*/
(function() {
- /*global Dygraph:false */
- "use strict";
- var DefaultHandler = Dygraph.DataHandler();
- Dygraph.DataHandlers.registerHandler("default", DefaultHandler);
+/*global Dygraph:false */
+"use strict";
- DefaultHandler.prototype.extractSeries = function(rawData, i, options) {
- // TODO(danvk): pre-allocate series here.
- var series = [];
- var logScale = options.get('logscale');
- for ( var j = 0; j < rawData.length; j++) {
- var x = rawData[j][0];
- var point = rawData[j][i];
- if (logScale) {
- // On the log scale, points less than zero do not exist.
- // This will create a gap in the chart.
- if (point <= 0) {
- point = null;
- }
+Dygraph.DataHandlers.DefaultHandler = Dygraph.DataHandler();
+var DefaultHandler = Dygraph.DataHandlers.DefaultHandler;
+
+DefaultHandler.prototype.extractSeries = function(rawData, i, options) {
+ // TODO(danvk): pre-allocate series here.
+ var series = [];
+ var logScale = options.get('logscale');
+ for ( var j = 0; j < rawData.length; j++) {
+ var x = rawData[j][0];
+ var point = rawData[j][i];
+ if (logScale) {
+ // On the log scale, points less than zero do not exist.
+ // This will create a gap in the chart.
+ if (point <= 0) {
+ point = null;
}
- series.push([ x, point ]);
}
- return series;
- };
+ series.push([ x, point ]);
+ }
+ return series;
+};
- DefaultHandler.prototype.rollingAverage = function(originalData, rollPeriod,
- options) {
- rollPeriod = Math.min(rollPeriod, originalData.length);
- var rollingData = [];
+DefaultHandler.prototype.rollingAverage = function(originalData, rollPeriod,
+ options) {
+ rollPeriod = Math.min(rollPeriod, originalData.length);
+ var rollingData = [];
- var i, j, y, sum, num_ok;
- // Calculate the rolling average for the first rollPeriod - 1 points
- // where
- // there is not enough data to roll over the full number of points
- if (rollPeriod == 1) {
- return originalData;
+ var i, j, y, sum, num_ok;
+ // Calculate the rolling average for the first rollPeriod - 1 points
+ // where
+ // there is not enough data to roll over the full number of points
+ if (rollPeriod == 1) {
+ return originalData;
+ }
+ for (i = 0; i < originalData.length; i++) {
+ sum = 0;
+ num_ok = 0;
+ for (j = Math.max(0, i - rollPeriod + 1); j < i + 1; j++) {
+ y = originalData[j][1];
+ if (y === null || isNaN(y))
+ continue;
+ num_ok++;
+ sum += originalData[j][1];
}
- for (i = 0; i < originalData.length; i++) {
- sum = 0;
- num_ok = 0;
- for (j = Math.max(0, i - rollPeriod + 1); j < i + 1; j++) {
- y = originalData[j][1];
- if (y === null || isNaN(y))
- continue;
- num_ok++;
- sum += originalData[j][1];
- }
- if (num_ok) {
- rollingData[i] = [ originalData[i][0], sum / num_ok ];
- } else {
- rollingData[i] = [ originalData[i][0], null ];
- }
+ if (num_ok) {
+ rollingData[i] = [ originalData[i][0], sum / num_ok ];
+ } else {
+ rollingData[i] = [ originalData[i][0], null ];
}
+ }
- return rollingData;
- };
+ return rollingData;
+};
- DefaultHandler.prototype.getExtremeYValues = function(series, dateWindow,
- options) {
- var minY = null, maxY = null, y;
- var firstIdx = 0, lastIdx = series.length - 1;
+DefaultHandler.prototype.getExtremeYValues = function(series, dateWindow,
+ options) {
+ var minY = null, maxY = null, y;
+ var firstIdx = 0, lastIdx = series.length - 1;
- for ( var j = firstIdx; j <= lastIdx; j++) {
- y = series[j][1];
- if (y === null || isNaN(y))
- continue;
- if (maxY === null || y > maxY) {
- maxY = y;
- }
- if (minY === null || y < minY) {
- minY = y;
- }
+ for ( var j = firstIdx; j <= lastIdx; j++) {
+ y = series[j][1];
+ if (y === null || isNaN(y))
+ continue;
+ if (maxY === null || y > maxY) {
+ maxY = y;
}
- return [ minY, maxY ];
- };
+ if (minY === null || y < minY) {
+ minY = y;
+ }
+ }
+ return [ minY, maxY ];
+};
+
})();