29 lines
958 B
TypeScript
29 lines
958 B
TypeScript
/**
|
|
* @license
|
|
* Copyright Google Inc. All Rights Reserved.
|
|
*
|
|
* Use of this source code is governed by an MIT-style license that can be
|
|
* found in the LICENSE file at https://angular.io/license
|
|
*/
|
|
|
|
import {MeasureValues} from '../measure_values';
|
|
import {Statistic} from '../statistic';
|
|
|
|
export function formatNum(n: number) {
|
|
return n.toFixed(2);
|
|
}
|
|
|
|
export function sortedProps(obj: {[key: string]: any}) {
|
|
return Object.keys(obj).sort();
|
|
}
|
|
|
|
export function formatStats(validSamples: MeasureValues[], metricName: string): string {
|
|
var samples = validSamples.map(measureValues => measureValues.values[metricName]);
|
|
var mean = Statistic.calculateMean(samples);
|
|
var cv = Statistic.calculateCoefficientOfVariation(samples, mean);
|
|
var formattedMean = formatNum(mean);
|
|
// Note: Don't use the unicode character for +- as it might cause
|
|
// hickups for consoles...
|
|
return isNaN(cv) ? formattedMean : `${formattedMean}+-${Math.floor(cv)}%`;
|
|
}
|