nc_open_CGLS: Open netcdf CGLS data
In RCGLS: Download and Open Data Provided by the Copernicus Global Land Service

Description Usage Arguments Details Value Note Examples

View source: R/RCGLS-functions.R

Opens single orginal data files/layers of Copernicus Global as netCDF filesLand Service as netCDF files without adjusting coordinates. Coordinate adjustment is necessary as R uses upper left corner as pixel reference and Copernicus uses pixel centre. Also see: https://land.copernicus.eu/global/products/.

1	nc_open_CGLS(date, product, resolution, version)

`date`	Date of interest, for example for 13 june 2019: 2019-06-13
`product`	Product name: fapar, fcover, lai, ndvi, ss, swi, lst, ...
`resolution`	1km, 300m or 100m
`version`	Version number: v1, v2, v3,...

Adjusting coordinates is a necessary step to use the data because Copernicus nc files have lat/long belonging to the centre of the pixel, and R uses upper/left corner. This function opens the data without any corrections.

CGLS data Opens single netcdf file in environment

Coordinates are shifted and need to be adjusted, for example by: if(resolution == "300m") lon <- lon - (1/336)/2 lat <- lat + (1/336)/2 if(resolution == "1km") lon <- lon - (1/112)/2 lat <- lat + (1/112)/2

## Not run: 
library(ncdf4)
DATE       <- "2019-06-13" #Date of interest, for example for 13 june 2019: 2019-06-13
PROD    <- "fapar" #Product name: fapar, fcover, lai, ndvi,  ss, swi, lst, ...
RES  <- "1km" #1km, 300m or 100m
V    <- "v1" #Version number: v1, v2, v3, ...

nc      <- nc_open_CGLS   (date=DATE, product=PROD, resolution=RES, version=V)

## End(Not run)