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TEL : 604-886-3579(home) 604-884-2491(office) Home : hiroshi_shimase@dccnet.com or hiroshi_shimase@mac.com Office: hshimase@mail.canfor.ca WEB : http://www.geocities.co.jp/SiliconValley-PaloAlto/4268/ -------------------------------------------------------------------
You can calculate the cross-correlation function between the two curves to estimate their "similarity". Labview has (in the Advanced Analysis Library) two VIs that should do the job: - in the function menu 'Signal Processing-->Frequency Domain-->Cross Power.vi' computes the cross-correlation power spectrum - in the menu 'Signal Processing-->Mesaurements-->Cross Power Spectrum.vi', which computes Magnitude and Phase of the cross power spectrum
Both require that the signals X(t) and Y(t) are sampled at equal t-values.
If you don't have the Advanced Analysis Library, try to get it
-Franz
Hiroshi Shimase schrieb:
> Hi, > > Now I'm making software to compare two curves are similar > or not. Those curves can be shifted a bit but I want to see > if these "sh apes" are identical. > > Does LabView have capability to see similarity for two curves > or any theory around here? > > Dan, > > ------------------------------------------------------------------- > Hiroshi Shimase (Oji Paper + Howe Sound Pulp & Paper) > > TEL : 604-886-3579(home) 604-884-2491(office) > Home : hiroshi_shimase@dccnet.com or hiroshi_shimase@mac.com > Office: hshimase@mail.canfor.ca > WEB : http://www.geocities.co.jp/SiliconValley-PaloAlto/4268/ > -------------------------------------------------------------------