station.symbol {RadioSonde}R Documentation

Adds a meteorological surface station annotation to a plot.

Description

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.

Usage

station.symbol(cx, cy, direction = 0, speed = 0, fill = 0, 
                color = "green", temp = NULL, press = NULL, 
                dewpt = NULL, circle=TRUE, cex = 2)

Arguments

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.

Value

Adds to a plot.

Author(s)

Doug Nychka, Eric Gilleland

See Also

plotsonde, plotwind, skewt.axis

Examples

   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)

[Package RadioSonde version 1.2-8 Index]