plotrix (version 3.8-4)

bin.wind.records: Classify wind direction and speed records

Description

Classifies wind direction and speed records into a matrix of percentages of observations in speed and direction bins.

Usage

bin.wind.records(winddir,windspeed,ndir=8,radians=FALSE,
  speed.breaks=c(0,10,20,30))

Value

A matrix of percentages in which the rows represent wind speed categories and the columns represent wind direction categories.

Arguments

winddir

A vector of wind directions.

windspeed

A vector of wind speeds corresponding to the above directions.

ndir

Number of direction bins in a compass circle.

radians

Whether wind directions are in radians.

speed.breaks

Minimum wind speed for each speed bin.

Author

Jim Lemon

Details

bin.wind.records bins a number of wind direction and speed records into a matrix of percentages of observations that can be used to display a cumulative wind rose with oz.windrose The defaults are those used by the Australian Bureau of Meteorology.

See Also

oz.windrose

Examples

 winddir<-sample(0:360,100,TRUE)
 windspeed<-sample(0:40,100,TRUE)
 bin.wind.records(winddir,windspeed)