pflugshaupt at geobot.umnw.ethz.ch
Wed Apr 17 15:42:34 CEST 2002
On 17.4.2002 16:55 Uhr, Sven Garbade wrote:
> I want to recalculate an analysis found in a paper. An empirical time
> series (velocities, altogether 241 data values) were cross-correlated
> with an invertited cosine function (200 milliseconds duration).
> Following the authors the resulting values should offer some advantages:
> being independent of gain and peak latency differences between single
> trials and preserving the temporal aspect of the modulation. Is there a
> function to calculate cross-correlations in R? I think cor() is ot the
> right one.
You need the function ccf() in library(ts).
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