How to download, mosaic and resample Modis NDVI data
Modis NDVI data are fully described here Briefly: these data are intended to be the continuation of the well-known NOAA-AVHRR Vegetation Index and are currently used in a wide range of applications. The following procedure (very basic!!! use at your own risk! no waranty!!) works only in a Linux environment (even if it has been ported on a Windows machine under Cygwin). Pre-requisities: wget and MRT (Modis Reprojection Tool) that needs to be installed properly (that is MRT's bin directory needs to be added to the environmental variable $PATH) It consists in three Bash script and one auxiliary file, namely: wrapper_ModisNDVI.sh get.ndvi.sh mrt.ndvi.sh custom.env Copy all the files in your workin directory and cd to that directory. Usage: sh wrapper_ModisNDVI.sh YYYY.MM.DD file_env where YYYY.MM.DD is the year.month.day of the NDVI time step you're interested in as listed in https://e4ftl01.cr.usgs.gov/MOLT/MOD13Q1.006/ and the file file_env (custom.env) contai...