LAI: Estimate LAI from Landsat Data

In ffuentesp7/METRICforR: Actual Evapotranspiration with Energy Balance models

Description

This function implements empirical models to estimate LAI (Leaf Area Index) for satellital images. Models were extracted from METRIC publications and other works developed on different crops.

Usage

LAI(method = "metric2010", image, sat = "auto", ESPA = F, aoi, L = 0.1)

Arguments

method	Method used to estimate LAI from spectral data. See Details.
image	image. top-of-atmosphere reflectance for method=="metric" | method=="metric2010" | method=="vineyard" | method=="MCB"; surface reflectance for method = "turner". Not needed if ESPA == TRUE
sat	"L7" for Landsat 7, "L8" for Landsat 8 or "auto" to guess from filenames
ESPA	Logical. If TRUE will look for espa.usgs.gov related products on working folder
aoi	area of interest to crop images, if waterOptions("autoAoi") == TRUE will look for any object called aoi on .GlobalEnv
L	L factor used in method = "metric" or "metric2010" to estimate SAVI, defaults to 0.1

Author(s)

Guillermo Federico Olmedo

Fonseca-Luengo, David

References

R. G. Allen, M. Tasumi, and R. Trezza, "Satellite-based energy balance for mapping evapotranspiration with internalized calibration (METRIC) - Model" Journal of Irrigation and Drainage Engineering, vol. 133, p. 380, 2007

ffuentesp7/METRICforR documentation built on May 15, 2019, 11:57 a.m.