Calculate 8-neighbor edge loadings from a time series of u and v windspeeds

Calculate 8-neighbor edge loadings from a time series of u and v windspeeds

Usage

rose(x, trans = identity)

Arguments

x

A vector of wind data containing: latitude, resolution, u windspeeds, v windspeeds

p

A positive number indicating the power to raise windspeeds to (see details)

Value

A vector of 8 conductance values to neighboring cells, clockwise starting with the southwest neighbor. If input windspeeds are in m/s, values are in (1 / hours ^ p)

Details

A value of p = 0 will ignore speed, assigning weights based on direction only. P = 1 assumes conductance is proportional to windspeed, p = 2 assumes it's proportional to aerodynamic drag, and p = 3 assumes it's proportional to force. Any intermediate value can also be used.