ndvi: NDVI by calendar month or lunar month

In portalr: Create Useful Summaries of the Portal Data

NDVI by calendar month or lunar month

Description

Summarize NDVI data to monthly or lunar monthly level

Usage

ndvi(
  level = "monthly",
  sensor = "landsat",
  fill = FALSE,
  corrected = TRUE,
  forecast = FALSE,
  path = get_default_data_path(),
  download_if_missing = TRUE
)

Arguments

level	specify "monthly" or "newmoon"
sensor	specify "landsat", "modis", "gimms", or "all"
fill	specify if missing data should be filled, passed to fill_missing_ndvi
corrected	specify if data should be corrected using calibration between landsat sensors
forecast	specify ndvi should be forecast from the end of the data to the present, passed to fcast_ndvi
path	either the file path that contains the PortalData folder or "repo", which then pulls data from the PortalData GitHub repository
download_if_missing	if the specified file path doesn't have the PortalData folder, then download it

portalr documentation built on Jan. 29, 2026, 1:07 a.m.