Nothing
test_that("Holdridge coordinate transformation", {
pet <- c(0.125, 32, 2, 0.125)
prec <- c(62.5, 62.5, 1000, 16000)
tern <- cbind(c(1, 0, 0), c(0, 0, 1), c(0, 1, 1), c(0, 1, 0))
expect_equal(TernaryToXY(tern), HoldridgeToXY(pet, prec))
})
test_that("Holdridge plotting", {
HoldridgeBasic <- function() {
pet <- holdridge[, 2]
prec <- holdridge$Precipitation
lat <- holdridge$Latitude
latCol <- viridisLite::plasma(90, alpha = 0.6)[ceiling(abs(lat))]
oPar <- par(mar = rep(0, 4))
on.exit(par(oPar), TRUE)
HoldridgePlot(hex.labels = holdridgeLifeZonesUp, hex.cex = 0.5)
HoldridgeBelts()
HoldridgePoints(pet, prec, cex = 2.2, pch = 21, bg = latCol)
HoldridgeText(pet, prec, seq_along(pet)[-12],
cex = 0.6,
col = "white", font = 2
)
}
skip_if_not_installed("vdiffr")
vdiffr::expect_doppelganger("holdridge-basic", HoldridgeBasic)
})
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