@nova-ui/dashboards
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Nova Dashboards is a framework designed to provide feature developers with a common solution for presenting data coming from various sources within a single view, as well as a set of predefined widget visualizations that are 100% configuration-driven and
66 lines • 10.1 kB
JavaScript
// © 2022 SolarWinds Worldwide, LLC. All rights reserved.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to
// deal in the Software without restriction, including without limitation the
// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
// sell copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
import cloneDeep from "lodash/cloneDeep";
export function transformLinReg(data, hasPercentile) {
const transformed = cloneDeep(data);
const dataValues = {
x: [],
y: [],
};
transformed.forEach((d) => {
dataValues.x.push(d.x.valueOf());
dataValues.y.push(d.y);
});
function linearRegression(xValues, yValues) {
let xSum = 0, ySum = 0, xySum = 0, xxSum = 0, count = 0, x = 0, y = 0;
if (xValues.length !== yValues.length) {
throw new Error("The x and y data arrays need to be the same length");
}
if (xValues.length === 0) {
throw new Error("There's no data to work with");
}
for (let i = 0; i < xValues.length; i++) {
x = xValues[i];
y = yValues[i];
xSum += x;
ySum += y;
xxSum += Math.pow(x, 2);
xySum += x * y;
count++;
}
const m = (count * xySum - xSum * ySum) / (count * xxSum - xSum * xSum);
const b = ySum / count - (m * xSum) / count;
const resultXValues = [];
const resultYValues = [];
for (let i = 0; i < xValues.length; i++) {
x = xValues[i];
y = x * m + b;
resultXValues.push(x);
resultYValues.push(y);
}
return resultYValues;
}
const linRegData = linearRegression(dataValues.x, dataValues.y);
linRegData.forEach((value, index) => {
transformed[index].y = value;
});
return transformed;
}
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