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expMovingAvg: use window size as param

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Alexander Zobnin
2017-07-04 10:16:41 +03:00
parent 0b8cb0b23c
commit e0466ea780
4 changed files with 13 additions and 1 deletions
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4
dist/datasource-zabbix/timeseries.js vendored
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@@ -253,6 +253,10 @@ System.register(['lodash', './utils'], function (_export, _context) {
} }
function expMovingAverage(datapoints, a) { function expMovingAverage(datapoints, a) {
// Calculate a from window size
if (a > 1) {
a = 2 / (a + 1);
}
var ema = [datapoints[0]]; var ema = [datapoints[0]];
var ema_prev = datapoints[0][POINT_VALUE]; var ema_prev = datapoints[0][POINT_VALUE];
var ema_cur = void 0; var ema_cur = void 0;

2
dist/datasource-zabbix/timeseries.js.map vendored
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File diff suppressed because one or more lines are too long

4
dist/test/datasource-zabbix/timeseries.js vendored
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@@ -278,6 +278,10 @@ function simpleMovingAverage(datapoints, n) {
} }
function expMovingAverage(datapoints, a) { function expMovingAverage(datapoints, a) {
// Calculate a from window size
if (a > 1) {
a = 2 / (a + 1);
}
var ema = [datapoints[0]]; var ema = [datapoints[0]];
var ema_prev = datapoints[0][POINT_VALUE]; var ema_prev = datapoints[0][POINT_VALUE];
var ema_cur = void 0; var ema_cur = void 0;

4
src/datasource-zabbix/timeseries.js
View File

@@ -270,6 +270,10 @@ function simpleMovingAverage(datapoints, n) {
} }
function expMovingAverage(datapoints, a) { function expMovingAverage(datapoints, a) {
// Calculate a from window size
if (a > 1) {
a = 2 / (a + 1);
}
let ema = [datapoints[0]]; let ema = [datapoints[0]];
let ema_prev = datapoints[0][POINT_VALUE]; let ema_prev = datapoints[0][POINT_VALUE];
let ema_cur; let ema_cur;