topic Frequency analysis in Wavefront by VMware Discussions https://communities.vmware.com/t5/Wavefront-by-VMware-Discussions/Frequency-analysis/m-p/1372117#M295 <HTML><HEAD></HEAD><BODY><P>Is there a function to do frequency (e.g., Fourier) analysis on time series data? I see periodic (every hour) activity spikes on time series data and would like to be able to detect the spikes automatically and alert on them.</P></BODY></HTML> Thu, 01 Nov 2018 17:38:20 GMT benh7 2018-11-01T17:38:20Z Frequency analysis https://communities.vmware.com/t5/Wavefront-by-VMware-Discussions/Frequency-analysis/m-p/1372117#M295 <HTML><HEAD></HEAD><BODY><P>Is there a function to do frequency (e.g., Fourier) analysis on time series data? I see periodic (every hour) activity spikes on time series data and would like to be able to detect the spikes automatically and alert on them.</P></BODY></HTML> Thu, 01 Nov 2018 17:38:20 GMT https://communities.vmware.com/t5/Wavefront-by-VMware-Discussions/Frequency-analysis/m-p/1372117#M295 benh7 2018-11-01T17:38:20Z Re: Frequency analysis https://communities.vmware.com/t5/Wavefront-by-VMware-Discussions/Frequency-analysis/m-p/1372118#M296 <HTML><HEAD></HEAD><BODY><P>One way to do this, given that I'm interested in correlating now vs. 1 hour ago, is as follows:</P><P></P><P>signal = ts(data, host=somehost)</P><P>lagsignal = lag(60m, ts(data, host=somehost))</P><P></P><P>Then look at mcorr(10m, ${signal}, ${lagsignal}).</P></BODY></HTML> Thu, 01 Nov 2018 19:55:37 GMT https://communities.vmware.com/t5/Wavefront-by-VMware-Discussions/Frequency-analysis/m-p/1372118#M296 benh7 2018-11-01T19:55:37Z