Description Usage Arguments Examples
View source: R/maternEffectiveRange.R
The effective range for an isotropic spatial correlation function is commonly defined to be the distance beyond which the correlation becomes small, typically below .05. Given range and smoothness parameters for a Matern covariance function, this function numerically searches for this distance. Note that the scale is not important for this calculation.
1 | maternEffectiveRange(cor = 0.05, range = 1, smoothness = 0.5)
|
cor |
Effective correlation to check for |
range |
Matern range parameter. Controls the decay of pointwise correlations as a function of distance. |
smoothness |
Matern smoothness parameter. Controls the number of process derivatives. |
1 2 3 | # effective range for exponential covariance function with range = 1,
# which is theoretically known to equal -ln(.05)
maternEffectiveRange(cor = .05, range = 1, smoothness = .5)
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