Plot shapes onto a ternary diagram created with TernaryPlot()
,
or a Holdridge plot created with HoldridgePlot()
.
AddToHoldridge(PlottingFunction, pet, prec, ...)
HoldridgeArrows(fromCoordinates, toCoordinates = fromCoordinates, ...)
HoldridgeLines(pet, prec, ...)
HoldridgePoints(pet, prec, ...)
HoldridgePolygon(pet, prec, ...)
HoldridgeText(pet, prec, ...)
AddToTernary(PlottingFunction, coordinates, ...)
TernarySegments(fromCoordinates, toCoordinates = fromCoordinates, ...)
TernaryArrows(fromCoordinates, toCoordinates = fromCoordinates, ...)
TernaryLines(coordinates, ...)
TernaryPoints(coordinates, ...)
TernaryPolygon(coordinates, ...)
TernaryText(coordinates, ...)
JoinTheDots(coordinates, ...)
Function to add data to a plot; perhaps one of
points
,
lines
or
text
.
Numeric vectors giving potential evapotranspiration ratio and annual precipitation (in mm).
Additional parameters to pass to PlottingFunction()
.
If using TernaryText()
, this will likely include the parameter labels
,
to specify the text to plot. Other useful
graphical parameters include srt
to rotate text.
For TernaryArrows()
, coordinates at
which arrows should begin and end; cf. x0
, y0
, x1
and y1
in
arrows. Recycled as necessary.
A list, matrix, data.frame or vector in which each element (or row) specifies the three coordinates of a point in ternary space.
HoldridgeArrows()
: Add arrows to Holdridge plot
HoldridgeLines()
: Add lines to Holdridge plot
HoldridgePoints()
: Add points to Holdridge plot
HoldridgePolygon()
: Add polygons to Holdridge
plot
HoldridgeText()
: Add text to Holdridge plot
TernarySegments()
: Add segments
TernaryArrows()
: Add arrows
TernaryLines()
: Add lines
TernaryPoints()
: Add points
TernaryPolygon()
: Add polygons
TernaryText()
: Add text
JoinTheDots()
: Add points, joined by lines
Other Holdridge plotting functions:
HoldridgeHypsometricCol()
,
HoldridgePlot()
,
holdridge
,
holdridgeClasses
# Data to plot
coords <- list(
A = c(1, 0, 2),
B = c(1, 1, 1),
C = c(1.5, 1.5, 0),
D = c(0.5, 1.5, 1)
)
# Set up plot
oPar <- par(mar = rep(0, 4), xpd = NA) # reduce margins and write in them
TernaryPlot()
# Add elements to ternary diagram
AddToTernary(lines, coords, col = "darkgreen", lty = "dotted", lwd = 3)
TernaryLines(coords, col = "darkgreen")
TernaryArrows(coords[1], coords[2:4], col = "orange", length = 0.2, lwd = 1)
TernaryText(coords, cex = 0.8, col = "red", font = 2)
seeThruBlue <- rgb(0, 0.2, 1, alpha = 0.8)
TernaryPoints(coords, pch = 1, cex = 2, col = seeThruBlue)
AddToTernary(graphics::points, coords, pch = 1, cex = 3)
# An equivalent syntax applies to Holdridge plots:
HoldridgePlot()
pet <- c(0.8, 2, 0.42)
prec <- c(250, 400, 1337)
HoldridgeText(pet, prec, c("A", "B", "C"))
AddToHoldridge(graphics::points, pet, prec, cex = 3)
# Restore original plotting parameters
par(oPar)