angledist: Creates object of class angledist

Description

Creates a leaf angle distribution object. Other functions in the LeafAngle package use this type of object quite conveniently. Nearly all distributions summarized in Wang et al. (2007) are implemented.

Usage

angledist(distribution, distpars = NA)

Arguments

distribution

One of the distributions. Currently included are 'ellipsoid', 'rotatedell', 'twoparbeta', 'spherical', 'planophile', 'extremophile', 'erectophile', 'uniform', and 'plagiophile'.

distpars

A vector of parameters for the distribution. See Details.

Value

An object of class AngleDist. Simply a list of components, in this useage only two are set: distribution and distpars. Other components are set when fitting a distribution to data, see fitdistribution.

Details

Only three of the distributions take a parameter, these are 'ellipsoid' and 'rotatedell', and 'twoparbeta'. For the first two, the parameter X needs to be provided, for the 'twoparbeta' the parameters alphamean and tvar (see Wang et al. 2007).

References

Wang W.M., Li Z.L. & Su H.B. (2007). Comparison of leaf angle distribution functions: Effects on extinction coefficient and fraction of sunlit foliage. Agricultural and Forest Meteorology, 143, 106-122.

Examples

Run this code


mydist <- angledist('ellipsoid', 1.1)
plot(mydist)

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