search for: grava

...nsist of a two column data.frame with the time in column 1 and the frequency in column 2. However, for my purpose I need only one column with the time first and the frequency second. I tried different things but my knowledge in R is definitely too low to answer that. Thanks for your help! Thibault Grava PhD candidate Natural Resources and Environmental Studies University of Northern British Columbia Prince George, BC V2N 4Z9 ------------------------ Tel: (250) 960-6050 email:grava at unbc.ca

Hello Dear R user, I want to conduct a Principal components analysis and I need to run two tests to check whether I can do it or not. I found how to run the KMO test, however i cannot find an R fonction for the Bartlett's test of sphericity. Does somebody know if it exists? Thanks for your help! Thibault [[alternative HTML version deleted]]

...ped chickadee). I obtained a two column matrix with x=time(s) and y=frequency(khz). The part of the recording that is interesting me is when the frequency is stable. Does somebody ever used a fonction that extract only constant data among a huge list of data (sample= 180000)? Thanks Thibault Grava PhD candidate, Natural Resources and Environmental Study (NRES) University of Northern BC, Prince George, BC phone office: (250) 960 6050 email address: grava at unbc.ca

...> > > > > On Jun 18, 2011, at 1:47 AM, Jeremy Miles wrote: > >> cortest.bartlett() in the psych package. >> >> I've never seen a non-significant Bartlett's test. >> >> Jeremy >> >> >> >> On 17 June 2011 12:43, thibault grava <thibault.grava at gmail.com> wrote: >>> Hello Dear R user, >>> >>> I want to conduct a Principal components analysis and I need to run two >>> tests to check whether I can do it or not. I found how to run the KMO >>> test, however i cannot find an...

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