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irg (version 0.1.6)

Instantaneous Rate of Green Up

Description

Fits a double logistic function to NDVI time series and calculates instantaneous rate of green (IRG) according to methods described in Bischoff et al. (2012) .

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Install

install.packages('irg')

Monthly Downloads

253

Version

0.1.6

License

GPL-3

Issues

0

Pull Requests

0

Stars

2

Forks

0

Maintainer

Alec L. Robitaille

Last Published

December 22nd, 2021

Functions in irg (0.1.6)

scale_ndvi

Scale NDVI
model_params

Estimate model parameters
scale_doy

Scale DOY
model_ndvi

Model NDVI time series
irg

IRG
filter_top

Filter top NDVI
filter_qa

Filter with QA Band
model_start

Model starting parameters
filter_winter

Filter winter NDVI
filter_roll

Filter with rolling median
use_example_ee_script

Use an example sampling script for Earth Engine
calc_irg

IRG
filter_ndvi

Filter NDVI
sampled-ndvi-Landsat-LC08-T1-L2.csv

Raw Landsat NDVI data
sampled-ndvi-MODIS-MOD13Q1.csv

Raw MODIS MOD13Q1 NDVI data