station.symbol {RadioSonde} | R Documentation |
Adds a meteorological surface station annotation at the given coordinates. The annotation includes speed and direction of the wind, temperature, pressure, dewpoint ... to a given plot.
station.symbol(cx, cy, direction = 0, speed = 0, fill = 0, color = "green", temp = NULL, press = NULL, dewpt = NULL, circle=TRUE, cex = 2)
cx |
x coordinate for location of the annotation. |
cy |
y coordinate for the annotation. |
direction |
Wind direction. |
speed |
Wind speed. |
fill |
Fill for visibility: 0 = clear skies, 1 = 25% obscured, 2 = 50% obscured, 3 = 75% obscured, 4 = no visibility |
color |
Fill color. Used only when fill > 0 |
temp |
Temperature value to plot symbol (must be a scalar). If NULL then no temperature value will be annotated. |
press |
Pressure value to plot symbol (must be a scalar). If NULL then no pressure value will be annotated. |
dewpt |
Dewpoint Temperature value to plot symbol (must be a scalar). If NULL then no dewpoint value will be annotated. |
circle |
If TRUE, will plot the usual station symbol with a circle at its base. |
cex |
Usual plotting parameter. |
Adds to a plot.
Doug Nychka, Eric Gilleland
plotsonde
,
plotwind
,
skewt.axis
plot(0:1, 0:1, type="n") station.symbol(0.5, 0.5, direction=75, speed=30, fill=3, temp=31, press=987, dewpt=26)