ndvi.mask: Convert a hdf5 file containing hyperspectral imagery into a...

In akamoske/hypRspec: processing tools for hyperspectral imagery

Description

This function reads in a hdf5 file and create a NDVI matrix for use in the topographic and BRDF corrections that are applied in later steps.

Usage

ndvi.mask(hy.file, metadata.path, reflectance.path, wavelength.path,
  red.nm, nir.nm, ndvi.threshold)

Arguments

hy.file	hdf5 file containing hyperspectral imagery and associated metadata
metadata.path	hdf5 path to reflectance metadata
reflectance.path	hdf5 path to reflectance data
wavelength.path	hdf5 path to wavelength metadata
red.nm	wavelength (nm) to use for red band
nir.nm	wavelength (nm) to use for nir band
ndvi.threshold	threshold for NDVI mask

Details

For theory behind this function please see:

Asner, G.P., Martin, R.E., Anderson, C.B., and Knapp, D.E., 2015. Quantifying forest canopy traits: Imaging spectroscopy versus field survey. Remote Sensing of Environment, 158: 15-27.

Dahlin, K.M., Asner, G.P., Field., C.B., 2014. Linking vegetation patterns to environmental gradients and human impacts in a mediterranean-type island ecosystem. Landscape Ecology, 29(9): 1571-1585.

Value

A matrix containing the NDVI mask

akamoske/hypRspec documentation built on April 30, 2021, 8:27 p.m.