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I am looking for a multivariate time series (at least 2000 times) where there must be a circular variable and a linear one.

For example a time series of wind and wave direction (circular data) and wind speed and wave height (linear data). i do not need this particular dataset, i already have this dataset, i need something different.

A dataset with ecological meaning should be better.

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  • Are you looking for such a data set that is completely different from wave direction and wind speed/wave height? Perhaps temperature (circular) and something else?
    – Mark Silverberg
    Commented Sep 3, 2014 at 2:46
  • Yes, i am looking for something else different from wave and wind dataset. I do not understand why you say that temperature is circular.
    – niandra82
    Commented Sep 3, 2014 at 7:22
  • my bad, definition of circular variable was off
    – Mark Silverberg
    Commented Sep 3, 2014 at 11:33
  • I'm not sure what you mean by 'circular data' ... is this just a vector given in polar coordinates?
    – Joe
    Commented Sep 3, 2014 at 17:28
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    The domain of a vector (for example a vector of 2 variables) expressed in polar coordinates is $\mathbb{R}^2$, not a circle. Of course i can use only the angle of the polar coordinates transformation as circular variable, but i want a circular variable that as a "meaning" (as the wind direction).
    – niandra82
    Commented Sep 3, 2014 at 18:11

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There is an area of statistics called functional data analysis. If you look through the documentation for these procedures (R and matlab) or the books/short courses, you should be able to find a dataset that meets your needs.

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