RLeafAngle1.0 package

Estimates, Plots and Evaluates Leaf Angle Distribution Functions, Calculates Extinction Coefficients

BetaDis

Compute the Beta distribution of leaf zenith angle.

computeBeta

Compute the parameter of Beta function given leaf angle distribution m...

computeG

Compute the mean projection of unit leaf area on the plane perpendicul...

computeGEllip

Compute the G value given lamda (the parameter of ellipsoidal function...

computeLambda

Compute the parameter of ellipsoidal function given leaf angle distrib...

computeLambdaR

Compute the parameter of rotated-ellipsoidal function given leaf angle...

computeSunlit

Compute the fraction of sunlit folige given solar position, LAI and G ...

computeTrig

Compute the parameter of Verhoef's leaf angle distribution given leaf ...

ellipsoidalDis

Compute the ellipsoidal distribution of leaf zenith angle.

ellipsoidalRDis

Compute the rotated ellipsoidal distribution of leaf zenith angle.

estBeta

Estimate the parameters of Beta distribution given leaf angle measurem...

extremophileDis

Compute the extremophile distribution of leaf zenith angle.

interBeta

Compute the fraction leaf area given leaf angle intervals (in degree) ...

interEllip

Compute the fraction leaf area given leaf angle intervals (in degree) ...

interEllipR

Compute the fraction leaf area for rotated-ellipsoidal function given ...

interErectophile

Compute the fraction leaf area of Erectophile distribution given leaf ...

interExtremophile

Compute the fraction leaf area of Extremophile distribution given leaf...

interPlagiophile

Compute the fraction leaf area of Plagiophile distribution given leaf ...

interPlanophile

Compute the fraction leaf area of Planophile distribution given leaf a...

interSpherical

Compute the fraction leaf area of Spherical function given leaf angle ...

interUniform

Compute the fraction leaf area of Uniform distribution given leaf angl...

intervalTrig

Compute the fraction leaf area given leaf angle intervals (in degree) ...

LADdensity

Retrieve the density of leaf area given leaf angle measurements.

plagiophileDis

Compute the plagiophile distribution of leaf zenith angle.

planophileDis

Compute the planophile distribution of leaf zenith angle.

plotdensity

Plot the density of leaf area given leaf angle measurements.

selectClassic

Retrieve the density of leaf area given leaf angle measurements.

sphericalDis

Compute the spherical distribution of leaf zenith angle.

sysAziDis

Compute the symmetric distribution of leaf azimuth angle.

uniformDis

Compute the uniform distribution of leaf zenith angle.

Leaf angle distribution is described by a number of functions (e.g. ellipsoidal, Beta and rotated ellipsoidal). The parameters of leaf angle distributions functions are estimated through different empirical relationship. This package includes estimations of parameters of different leaf angle distribution function, plots and evaluates leaf angle distribution functions, calculates extinction coefficients given leaf angle distribution. Reference: Wang(2007)<doi:10.1016/j.agrformet.2006.12.003>.

  • Maintainer: Wei-Min Wang
  • License: GPL
  • Last published: 2017-06-20