Created
December 5, 2020 03:28
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Simple visualisation tool for Gnome battery bench results, with an option to extrapolate data to find the total battery life.
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| <!DOCTYPE html> | |
| <head> | |
| <script src="https://cdn.plot.ly/plotly-latest.min.js"></script> | |
| <script src="https://cdnjs.cloudflare.com/ajax/libs/regression/2.0.1/regression.min.js"></script> | |
| <meta charset="utf-8"> | |
| </head> | |
| <div id="batteryPlot" style="width:1000px;height:500px;"></div> | |
| <input type="file" id="file-selector" accept=".json"> | |
| <br> | |
| <div> | |
| <input type="checkbox" id="calcFit" name="calcFit" | |
| checked> | |
| <label for="scales">Extrapolate Graph</label> | |
| </div> | |
| <script> | |
| const fileSelector = document.getElementById('file-selector'); | |
| fileSelector.addEventListener('change', (event) => { | |
| const fileList = event.target.files; | |
| loadJSON(event.target.files[0]); | |
| console.log(fileList); | |
| }); | |
| function loadJSON(file) { | |
| if(file.type !== 'application/json') | |
| return alert("Please select a json file"); | |
| const reader = new FileReader(); | |
| reader.addEventListener('load', (event) => { | |
| try { | |
| let jsonData = JSON.parse(event.target.result); | |
| displayJSON(jsonData); | |
| } catch(err) { | |
| return alert("Could not read JSON file"); | |
| } | |
| }); | |
| reader.readAsText(file); | |
| } | |
| let jd; | |
| function displayJSON(jsonData) { | |
| jd = jsonData; | |
| let requiredFields = ["test-name", "log"]; | |
| if(!requiredFields.every(requiredKey => !!jsonData[requiredKey])) | |
| return alert("JSON file missing required keys."); | |
| let chargeDelta = jsonData["log"].map(point => parseFloat(point["charge"]+(jsonData["log"][0]["charge-full"]-jsonData["log"][0]["charge"]))/parseFloat(jsonData["log"][0]["charge-full"])*100.0); | |
| let xData = jsonData["log"].map(point => +point["time-ms"]/parseFloat(1000*60)); | |
| let fitData = null; | |
| if(document.getElementById('calcFit').checked) | |
| fitData = getFit(jsonData); | |
| if(fitData) { | |
| xData.push(fitData.endTimeMs/parseFloat(1000*60)); | |
| chargeDelta.push(0); | |
| } | |
| plotData.push({ | |
| x: xData, | |
| y: chargeDelta, | |
| text: jsonData["test-name"]+" "+(fitData ? getTimeStr(fitData.endTimeMs): "(no fit data)"), | |
| name: jsonData["test-name"]+" "+(fitData ? getTimeStr(fitData.endTimeMs): "(no fit data)"), | |
| mode: 'lines+markers', | |
| marker: { | |
| size: 3, | |
| } | |
| }); | |
| Plotly.redraw(batteryPlot); | |
| console.log("Done"); | |
| } | |
| function getTimeStr(durationMillis) { | |
| let timeStrs = []; | |
| if(Math.floor(durationMillis/parseFloat(1000*60*60)) > 0) | |
| timeStrs.push(`${Math.floor(durationMillis/parseFloat(1000*60*60))} hours`); | |
| let remainingMinutes = durationMillis-Math.floor(durationMillis/parseFloat(1000*60*60))*(1000*60*60); | |
| if(Math.floor(remainingMinutes/parseFloat(1000*60)) > 0) | |
| timeStrs.push(`${Math.floor(remainingMinutes/parseFloat(1000*60))} minutes`); | |
| if(!timeStrs.length) { | |
| let remainingSeconds = remainingMinutes-Math.floor(remainingMinutes/parseFloat(1000*60)); | |
| if(Math.floor(remainingSeconds/parseFloat(1000)) > 0) | |
| timeStrs.push(`${Math.floor(remainingSeconds/parseFloat(1000))} seconds`); | |
| } | |
| return timeStrs.join(", "); | |
| } | |
| function getFit(jsonData) { | |
| let finalPoints = 25; // this is approximately five minutes | |
| try { | |
| let regResult = regression.linear(jsonData["log"].slice(-25).map(point => [+point["time-ms"],+point["charge"]])); | |
| if(regResult && regResult.equation && regResult.equation.length && !isNaN(regResult.equation[0]) && !isNaN(regResult.equation[1])) { | |
| return { | |
| endTimeMs: (-regResult.equation[1]) / regResult.equation[0], | |
| regressionResult: regResult, | |
| } | |
| } | |
| } catch(err) { | |
| console.log("Error calculating fit: ",err); | |
| } | |
| return null; | |
| } | |
| </script> | |
| <script> | |
| let batteryPlot = document.getElementById('batteryPlot'); | |
| let plotData = []; | |
| Plotly.newPlot( batteryPlot, plotData, | |
| { | |
| margin: { t: 0 }, | |
| showlegend: true, | |
| xaxis: { | |
| title: { | |
| text: 'Minutes' | |
| } | |
| }, | |
| yaxis: { | |
| title: { | |
| text: 'Normalized Battery percentage' | |
| } | |
| } | |
| } ); | |
| </script> |
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