[R-sig-Geo] gimms: Download and Process GIMMS NDVI3g Data

[Florian Detsch]

Dear list members,

allow me to briefly draw your attention towards the latest release of 
the 'gimms' package (gimms-1.0.0). Quite some time has passed since the 
last update, but now that version 1 of the AVHRR-based GIMMS NDVI record 
(NDVI3g.v1; until end 2015) has been made available, some adjustments 
were overdue. Among those are (taken from the NEWS file):

* Added support for the recently released NDVI3g.v1 to all package 
functions.
* Included local file inventories for all available GIMMS products 
(NDVI3g.v0
   and NDVI3g.v1) and their respective servers (ECOCAST, NASANEX).
* Quality control has been added to rasterizeGimms() through specifying
   permitted flag values ('keep'), rendering the subsequent application of a
   separate function unnecessary. For reasons of convenience, however,
   qualityControl() is still available.
* rasterizeGimms() now includes an extent argument ('ext') to enable 
clipping
   based on raster::crop().
* Scaling and the rejection of water and nodata-mask values are no longer
   optional.
* If 'timestamp = TRUE', monthlyIndices() now returns an object of class 
'Date'
   (instead of 'character') and '...' is no longer available.

In addition, the accompanying GitBook has been updated which provides a 
rather quick-and-dirty introduction to the subject. It is reachable via 
https://www.gitbook.com/book/envin-marburg/introducing-the-r-gimms-package/details.

Feedback and suggestions are always welcome, and feature requests and/or 
bug reports should be filed at 
https://github.com/environmentalinformatics-marburg/gimms.

Best,
Florian


-- 
Florian Detsch (M.Sc. Physical Geography)
Environmental Informatics
Department of Geography
Philipps-Universität Marburg
Deutschhausstraße 12
35032 (parcel post: 35037) Marburg, Germany

Phone: +49 (0) 6421 28-25323
Web: http://www.uni-marburg.de/fb19/fachgebiete/umweltinformatik/detschf/index.html