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Wendland 2 compactly supported covariance function

Source: R/covariance.R
wendland2.Rd

Evaluates the Wendland order-2 (C4) function: for d in (0, 1), C(d) = (1 - d)^6 * (35d^2 + 18d + 3) / 3. Returns 0 for d > 1.

Usage

wendland2(d)

Arguments

d

Non-negative distance (scaled by range parameter).

Value

Covariance value.