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Can you read a netCDF file into R?
In the previously post, I covered how to read and convert netCDF files directly into R and convert to data frames. The approach is simple and straight forward but there flaws in this approach. One main setback of this approach is its inability to read maltiple matrix in an array from a netcdf file.
What is the use of stars in netCDF?
Stars is used to read in the netCDF files. Stars and dplyr are used to manipulate the data. Viridis and ggplot2 are used for plotting. Finally, a couple of shapefiles will be pulled from rnaturalearth to provide geographic context to the raster.
Where can I find the netCDF data set?
The data are available on ClimateLab.uoregon.edu(see File transfer on the Tasks tab), in the /nc_filesfolder, with the file name cru10min30_tmp.nc. Download the netCDF file to a convenient folder. [Back to top] 2Reading a netCDF data set using the ncdf4package
Can you read maltiple matrix from netCDF file?
One main setback of this approach is its inability to read maltiple matrix in an array from a netcdf file. This inability end up obtain a data frame from the of the first matrice of an array dropping out other matrix.
How to extract variable names from a netCDF file?
Package ncdf4 — use this for new code The “ncdf4” package is designed to work with the netcdf library, version 4. It includes the ability to use compression and chunking, which seem to be some of the most anticipated benefits of the version 4 library.
How to create a GeoTIFF from data in netCDF?
Firstly lets combine our x, y and z data into a list we’ll conveniently call “data”: We can now create a raster (which we’ll call “ras”) using the raster package – ignoring projection info, this can be done simply as: As we have the projection info it would be useful to ensure the geotiff also contains this.
What is the metadata of the netCDF file?
In summary, the metadata contains information about the netCDF file. One group of the data in the file include vector format variables like longitude, latitude and time as vector (table 1) The second group of the data in the metadata are array of velocity.