Does anyone know how to use the NetCDF files coming from CORDEX regional climate model data on single levels for Europe?
1. I downloaded a single nc file using the ecmwfr package using the attached code successfully
2. When I used the brick function from the raster package to load the data I got the warning messages:
==============
Warning messages: 1: In .getCRSfromGridMap4(atts) : cannot process these parts of the CRS: grid_north_pole_latitude=39.25 grid_north_pole_longitude=-162 2: In .getCRSfromGridMap4(atts) : cannot create a valid CRS grid_north_pole_latitude=39.25 grid_north_pole_longitude=-162 ==============
Consequently the brick object has no CRS. And all my attempts to set CRS manually failed. An email sent to C3S/CAMS User Support returned the answer:
==============
I would recommend you use Panoply to visualize the data. We do not provide support for the use of our data in packages such as R or GrADS I'm afraid. But Panoply usually can handle our data. The link to Panoply is available from What are NetCDF files and how can I read them.
==============
Am I missing something obvious?
Hi Konstantinos Vantas
I'd suggest you use the package "ncdf4" in R, It really makes things easy to load and work with any netcdf files in R.
To install it and to load it in your work environment, use
install.packages("ncdf4")
library(ncdf4)
You can look up the package's documentation online on how to load the .nc data as an "R array" and then perform any operation you want with it. If you need any further clarification on using this package, message me.
hi Mohammed Cassim Sannan
I would like to use directly the nc files as rasters and not to convert them to matrices and back to rasters.
I found some hints in https://github.com/r-spatial/sf/issues/651 with the help of Adriano Fantini.
It is ridiculous that the creators of euro-cordex files do not describe in a proper parametrical way their products and provide then to public using these bizarre rotated pole projections.
- Badges
- Science topic
- Similar topics
- Geoscience
- Geoinformatics
- Geographic Information System