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welch/trend.change.juttle

Created April 17, 2015 19:58
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trend.change demo: estimating rate of change in a stream
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trend.change.juttle
import 'https://gist.githubusercontent.com/welch/b18d75bba184c441253c/raw/6b5b56d4677e416ef4a085fa6004f6f001ed1af9/sources.juttle' as sources;
import 'https://gist.githubusercontent.com/welch/6f2053f2bfc7d9e7b4d9/raw/b1e46167d05c7e49233db4613437283dcb1a3c4e/trend.juttle' as trend;
const start = :2014-01-01: ;
const dt = :60s: ;
sources.ripple_cpu -from start -to start + :1h:
| trend.change -in 'cpu' -dt dt -t0 start -out 'change'
| split
| @timechart -title "60s change" -display.dataDensity 0
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