gimms (1.1.0)

Download and Process GIMMS NDVI3g Data.

This is a set of functions to retrieve information about GIMMS NDVI3g files currently available online; download (and re-arrange, in the case of NDVI3g.v0) the half-monthly data sets from ; import downloaded files from ENVI binary (NDVI3g.v0) or NetCDF format (NDVI3g.v1) directly into R based on the widespread 'raster' package; conduct quality control; and generate monthly composites (e.g., maximum values) from the half-monthly input data. As a special gimmick, a method is included to conveniently apply the Mann-Kendall trend test upon 'Raster*' images, optionally featuring trend-free pre-whitening to account for lag-1 autocorrelation.

Maintainer: Florian Detsch
Author(s): Florian Detsch [cre, aut]

License: MIT + file LICENSE

Uses: curl, Kendall, ncdf4, raster, RCurl, zyp

Released 11 months ago.