R: Adds a meteorological surface station annotation to a plot.

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 = NA, fill = rep(0,
                 length(cx)), temp = NA, press = NA, dewpt = NA, circle
                 = TRUE, cex = 1, spdcolor = "green", lwd = 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
`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.
`spdcolor`	Glyph color
`lwd`	barb line width

Author(s)

Doug Nychka, Eric Gilleland

Examples

   plot(0:1, 0:1, type="n")
   station.symbol(0.5, 0.5, direction=130, speed=30, fill=3, 
                  temp=31, press=987, dewpt=26, cex=5)
   title("Wind Barb")