water (version 0.3.2)

calcAnchors: Select anchors pixels for H function

Description

automatically search end members within the satellite scene (extreme wet and dry conditions).

Usage

calcAnchors(image, Ts, LAI, albedo, Z.om, n = 1, aoi, anchors.method = "CITRA-MCB", plots = TRUE, deltaTemp = 5, verbose = FALSE)

Arguments

image

top-of-atmosphere landsat reflectance image

Ts

land surface temperature in K. See surfaceTemperature()

LAI

rasterLayer with Leaf Area Index. See LAI()

albedo

broandband surface albedo. See albedo()

Z.om

momentum roughness lenght. See momentumRoughnessLength()

n

number of pair of anchors pixels to calculate

aoi

area of interest to limit the search. If waterOptions(autoAOI) == TRUE, It'll use aoi object from .GlobalEnv

anchors.method

method to select anchor pixels. Currently only "CITRA-MCB" automatic method available.

plots

Logical. If TRUE will plot position of anchors points selected

deltaTemp

deltaTemp for method "CITRA-MCB"

verbose

Logical. If TRUE will print aditional data to console

References

CITRA y MCB (com pers)