Description Usage Arguments Details Value Author(s) Examples
stcenter
centers and scales the space-time series data
such that its mean is 0 and its standard error 1.
1 |
data |
a matrix or data frame containing the space-time series: row-wise should be the temporal observations, with each column corresponding to a site. |
center |
a logical value indicating whether the series should be centered or not (subtracting the mean). |
scale |
a logical value indicating whether the series should be scaled or not (dividing by the empiric stand deviation). |
To be able to apply the three-stage iterative model building procedure method for STARMA models, data must be centered beforehand (since starma
doesn't estimate an intercept coefficient).
The only difference with the R function scale
is that it doesn't center and scale column by column, but globally, since all the observations come from a single process in the case of space time series.
An object of the same class as data
, that is either a matrix
or a data.frame
.
Felix Cheysson
1 2 3 4 5 6 7 8 |
[1] -3.382179e-16
[1] 1
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