Created
March 22, 2019 23:38
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WarpScript™ equivalent of https://www.influxdata.com/blog/practical-uses-of-cross-measurement-math-in-flux
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| // Load Tmeas, Pmeas, CO2meas | |
| // Assuming read token is in $RTOKEN | |
| // Measurments span $duration time units | |
| // Store the current time | |
| NOW 'now' STORE | |
| [ $RTOKEN 'Tmeas' {} $now $duration ] FETCH 'Tmeas' STORE | |
| [ $RTOKEN 'Pmeas' {} $now $duration ] FETCH 'Pmeas' STORE | |
| [ $RTOKEN 'CO2meas' {} $now $duration ] FETCH 'CO2meas' STORE | |
| // Now bucketize the series, using 30s buckets and applying a mean | |
| [ $Tmeas bucketizer.mean $now 30 s 0 ] BUCKETIZE 'Tmeas' STORE | |
| [ $Pmeas bucketizer.mean $now 30 s 0 ] BUCKETIZE 'Pmeas' STORE | |
| [ $CO2meas bucketizer.mean $now 30 s 0 ] BUCKETIZE 'CO2meas' STORE | |
| // We now fill the gaps | |
| $Tmeas FILLPREVIOUS [ NaN NaN NaN 20.0 ] FILLVALUE 0 GET 'Tmeas' STORE | |
| $Pmeas FILLPREVIOUS [ NaN NaN NaN 1013.25 ] FILLVALUE 0 GET 'Pmeas' STORE | |
| $CO2meas FILLPREVIOUS [ NaN NaN NaN 400.0 ] FILLVALUE 0 GET 'CO2meas' STORE | |
| // Now compute the final result | |
| 298.15 1013.25 [ 'Tref' 'Pref' ] STORE | |
| $Tmeas 273.15 + $Pref * $Pmeas $Tref * / $CO2meas + |
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