AppEEARS_proc: Filters and gap-fills downloaded MODIS AppEEARS data

In psavoy/StreamLightUtils: A Utility Package for the StreamLight Package

Filters and gap-fills downloaded MODIS AppEEARS data

Description

This function filters and gap-fills downloaded MODIS LAI data from the lpdaac AppEEARS download portal. There are several choices for processing this data:

• The LAI data is processed using the phenofit R package https://github.com/kongdd/phenofit. A rough fit is done using a weighted Whittaker smoother and then curve fitting is done using an assymetric Gaussian function.

• The LAI data is processed by using a Savitsky-Golay filter to remove noise and then missing data is interpolated with a spline.

• The LAI data is processed by using a Savitsky-Golay filter to remove noise and then missing data is interpolated by fitting a double logistic curve using the greenbrown R package.

Usage

AppEEARS_proc(
  unpacked_LAI,
  fit_method,
  plot = FALSE,
  write_output = FALSE,
  save_dir = NULL
)

Arguments

unpacked_LAI	Output from the AppEEARS_unpack_QC function
fit_method	There are several options available from the phenofit package including AG", "Beck", "Elmore", "Gu", "Klos", "Zhang".
write_output	Binary indicating whether to write each individual driver file to disk. Default value is FALSE.
save_dir	Optional parameter when write_output = TRUE. The save directory for files to be placed in. For example, "C:/
Plot	Binary, where plot = TRUE generates a plot and plot = FALSE does not

psavoy/StreamLightUtils documentation built on April 5, 2022, 11:05 p.m.