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Results tagged with time-series
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user 95286
Time series are data observed over time (either in continuous time or at discrete time periods).
1
vote
Finding point of interest in time series data
Try derivative after either a low-pass filter or smoothing (probably exponential smoothing) to cut down on the noise. Big changes result in a big derivative (up or down).
- 251
0
votes
Sorting column in dataframe in each group in R
order() is a way to sort data frames, that should have worked. Consider sharing the code used--perhaps it is just a usage issue.
Another good way to sort if you're open to using to using data.table is …
- 251