Description Usage Arguments References Examples
Provides parametric functions that describe different types of advection fields.
1 | advectionF(id, ...)
|
id |
advection type id ( |
... |
other arguments (vector of coordinates and parameters of advection field functions) |
Papalexiou, S.M., Serinaldi, F., Porcu, E. (2021). Advancing Space-Time Simulation of Random Fields: From Storms to Cyclones and Beyond. Water Resources Research, 57, e2020WR029466, doi: 10.1029/2020WR029466
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 | library(ggquiver)
library(ggplot2)
## specify coordinates
m = 25
aux <- seq(0, m - 1, length = m)
coord <- expand.grid(aux, aux)
## get the advection field
af <- advectionF('spiral',
spacepoints = coord,
x0 = floor(m / 2),
y0 = floor(m / 2),
a = 3,
b = 2,
rotation = 1)
## visualize advection field
dta <- data.frame(lon = coord[ ,1], lat = coord[ ,2], u = af[ ,1], v = af[ ,2])
ggplot(dta, aes(x = lon, y = lat, u = u, v = v)) +
geom_quiver() +
theme_light()
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