Updates
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Stavros Korokithakis
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@ -10,6 +10,7 @@
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- [DJI FPV configuration](ardupilot/dji-fpv-configuration.md)
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- [Miscellaneous notes](ardupilot/miscellaneous-notes.md)
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- [Reverse thrust](ardupilot/reverse-thrust.md)
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- [Statistics calculator](ardupilot/statistics-calculator.md)
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- [TECS tuning calculator](ardupilot/tecs-tuning-calculator.md)
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- [Transfer config between craft](ardupilot/transfer-config-between-craft.md)
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- [Tuning the TECS](ardupilot/tuning-the-tecs.md)
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@ -9,6 +9,7 @@ Click on a link in the list below to go to that page:
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1. [DJI FPV configuration](../../ardupilot/dji-fpv-configuration.html)
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1. [Miscellaneous notes](../../ardupilot/miscellaneous-notes.html)
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1. [Reverse thrust](../../ardupilot/reverse-thrust.html)
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1. [Statistics calculator](../../ardupilot/statistics-calculator.html)
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1. [TECS tuning calculator](../../ardupilot/tecs-tuning-calculator.html)
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1. [Transfer config between craft](../../ardupilot/transfer-config-between-craft.html)
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1. [Tuning the TECS](../../ardupilot/tuning-the-tecs.html)
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138
content/ardupilot/statistics-calculator.md
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138
content/ardupilot/statistics-calculator.md
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# Statistics calculator
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<script type="text/javascript">
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function raw(val){
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return val;
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}
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function ms_to_kph(val){
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return parseInt(val*3.6);
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}
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function m_to_km(val){
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return (val/1000).toFixed(2);
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}
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function sec_to_min(val){
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return parseInt(val/60);
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}
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function parseStats() {
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var stats = {
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"STAT_ASPD_AVG": { func: "ms_to_kph", "text": "Average air speed", "unit": "km/h"},
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"STAT_ASPD_MAX": { func: "ms_to_kph", "text": "Maximum air speed", "unit": "km/h"},
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"STAT_GSPD_AVG": { func: "ms_to_kph", "text": "Average ground speed", "unit": "km/h"},
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"STAT_GSPD_MAX": { func: "ms_to_kph", "text": "Maximum ground speed", "unit": "km/h"},
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"STAT_WSPD_AVG": { func: "ms_to_kph", "text": "Average wind speed", "unit": "km/h"},
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"STAT_WSPD_MAX": { func: "ms_to_kph", "text": "Maximum wind speed", "unit": "km/h"},
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"STAT_TRAVEL_AIR": { func: "m_to_km", "text": "Air distance traveled", "unit": "km"},
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"STAT_TRAVEL_GND": { func: "m_to_km", "text": "Ground distance traveled", "unit": "km"},
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"STAT_HOMEALT_MAX": { func: "raw", "text": "Maximum altitude relative to home", "unit": "m"},
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"STAT_HOMEDST_MAX": { func: "m_to_km", "text": "Maximum distance from to home", "unit": "km"},
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"STAT_CURRENT_AVG": { func: "raw", "text": "Average current", "unit": "A"},
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"STAT_CURRENT_MAX": { func: "raw", "text": "Maximum current", "unit": "A"},
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"STAT_POWER_AVG": { func: "raw", "text": "Average power", "unit": "W"},
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"STAT_POWER_MAX": { func: "raw", "text": "Maximum power", "unit": "W"},
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"STAT_FLT_ENERGY": { func: "raw", "text": "Consumed energy", "unit": "Wh"},
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"STAT_RUN_TIME": { func: "sec_to_min", "text": "Total run time", "unit": "minutes"},
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"STAT_FLT_TIME": { func: "sec_to_min", "text": "Total flight time", "unit": "minutes"}
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};
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document.getElementById("result").innerHTML=""
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var txt = document.getElementById("stats").value
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var tbl = document.createElement('table');
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var tbdy = document.createElement('tbody');
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for (const key in stats){
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var tr = document.createElement('tr');
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// find the parameter in the textblock
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var re = new RegExp(`${key}([^\D+])(.+)`,'g')
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var matches = txt.match(re) +''
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// extract the value
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var value = matches.match(/\d+/)
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var desc = stats[key]['text']
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var unit = stats[key]['unit']
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var func = stats[key]['func']
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// run the defined function with the value
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var out = window[func](value);
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var td = document.createElement('td');
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td.appendChild(document.createTextNode(desc))
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tr.appendChild(td)
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var td = document.createElement('td');
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td.appendChild(document.createTextNode(out + " "+ unit))
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td.style = "text-align:right"
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tr.appendChild(td)
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//save output for average calculations
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stats[key]['out'] = out
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tbdy.appendChild(tr);
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}
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tbl.appendChild(tbdy);
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var tr = document.createElement('tr');
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var td = document.createElement('td');
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td.appendChild(document.createTextNode("Average air efficiency"))
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tr.appendChild(td)
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var td = document.createElement('td');
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td.appendChild(document.createTextNode((stats["STAT_FLT_ENERGY"]["out"]/stats["STAT_TRAVEL_AIR"]["out"]).toFixed(2) + " Wh/km"))
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td.style = "text-align:right"
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tr.appendChild(td)
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tbdy.appendChild(tr);
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var tr = document.createElement('tr');
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var td = document.createElement('td');
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td.appendChild(document.createTextNode("Average flight time efficiency"))
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tr.appendChild(td)
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var td = document.createElement('td');
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td.appendChild(document.createTextNode(((stats["STAT_FLT_TIME"]["out"]*60)/stats["STAT_FLT_ENERGY"]["out"]).toFixed(2) + " s/Wh"))
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td.style = "text-align:right"
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tr.appendChild(td)
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tbdy.appendChild(tr);
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document.getElementById("result").appendChild(tbl)
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}
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</script>
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Paste your `STATS` items (you can get them with `parachute show -f STAT_`) here:
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<div><textarea id="stats" name="text" cols="30" rows="8">
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STAT_ASPD_AVG 15.243167
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STAT_ASPD_MAX 36.461681
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STAT_BOOT_CNT 65.000000
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STAT_CURRENT_AVG 3.061170
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STAT_CURRENT_MAX 11.686898
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STAT_FLT_CNT 18.000000
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STAT_FLT_ENERGY 118.639687
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STAT_FLT_TIME 12486.000000
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STAT_GSPD_AVG 14.964579
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STAT_GSPD_MAX 37.131924
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STAT_HOMEALT_MAX 2456.000000
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STAT_HOMEDST_AVG 104.000000
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STAT_HOMEDST_MAX 3796.000000
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STAT_LOAD 0.000000
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STAT_POWER_AVG 36.397156
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STAT_POWER_MAX 136.568756
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STAT_RESET 1.000000
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STAT_RUN_TIME 27828.000000
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STAT_TRAVEL_AIR 189796.000000
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STAT_TRAVEL_GND 186942.000000
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STAT_WSPD_AVG 4.371937
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STAT_WSPD_MAX 18.140949
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</textarea></div>
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<div><input type="button" id="do" value="format" onclick="parseStats();"></div>
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<div id="result"></div>
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_(Many thanks to mfoos for writing this note.)_
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* * *
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<p style="font-size:80%; font-style: italic">
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Last updated on May 28, 2022. For any questions/feedback,
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email me at <a href="mailto:hi@stavros.io">hi@stavros.io</a>.
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</p>
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