.cor_lagr_tri | R Documentation |
Calculate Lagrangian correlation of the triangular form
.cor_lagr_tri(v1, v2, k = 2, h1, h2, u)
v1 |
Prevailing wind, u-component. |
v2 |
Prevailing wind, v-component. |
k |
Scale parameter of |
h1 |
Horizontal distance matrix or array. |
h2 |
Vertical distance matrix or array, same dimension as |
u |
Time lag, same dimension as |
The Lagrangian correlation function of the triangular form with parameters
\boldsymbol v = (v_1, v_2)^\top\in\mathbb{R}^2
has the form
C(\mathbf{h}, u)=\left(1-\dfrac{1}{k\|\boldsymbol v\|}
\left|\dfrac{\mathbf{h}^\top\boldsymbol v}{\|\boldsymbol v\|}-
u\|\boldsymbol v\|\right|\right)_+,
where \|\cdot\|
is the Euclidean distance, x_+=\max(x,0),
\mathbf{h} = (\mathrm{h}_1, \mathrm{h}_2)^\top\in\mathbb{R}^2
,
and k > 0
is the scale parameter controlling the magnitude of
asymmetry in correlation.
Correlations of the same dimension as h1
.
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