intervalTrig {RLeafAngle}

Compute the fraction leaf area given leaf angle intervals (in degree) and the parameters of Verhoef's leaf angle distribution function.

Description

Compute the fraction leaf area given leaf angle intervals (in degree) and the parameters of Verhoef's leaf angle distribution function.

Usage

intervalTrig(AngleLower, AngleUpper, ap, bp)

Arguments

AngleLower

The lower limit of leaf angle intervals in degree.

AngleUpper

The upper limit of leaf angle intervals in degree.

ap

One of the parameters of Verhoef's leaf angle distribution function.

bp

One of the parameters of Verhoef's leaf angle distribution function.

Value

Compute the fraction leaf area of Verhoef's leaf angle distribution function.

Author(s)

Wei-Min Wang (wmwang AT gmail.com)

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(1), 106-122.

Examples

intervalTrig(40,50, -0.325, -0.173)