I'm accessing ncdf files directly from a website [here][1] into my RMarkdown. When I try to read the file using the nc_open functions as in the code below, I get the error 'Passed a filename that is NOT a string of characters!' Any idea how I can solve this? ps: I even tried uncompressing the files with the gzcon function but the result is the same when I try to read the data. Thanks for your help! Kami
library(httr)
library(ncdf4)
nc<-GET("https://crudata.uea.ac.uk/cru/data/hrg/cru_ts_4.05/cruts.2103051243.v4.05/pre/cru_ts4.05.2011.2020.pre.dat.nc.gz")
cru_nc<-nc_open(nc)
OK here is the fill answer:
library(httr)
library(ncdf4)
library(R.utils)
url <- "https://crudata.uea.ac.uk/cru/data/hrg/cru_ts_4.05/cruts.2103051243.v4.05/pre/cru_ts4.05.2011.2020.pre.dat.nc.gz"
filename <- "/tmp/file.nc.gz"
# Download the file and store it as a temp file
download.file(url, filename, mode = "wb")
# Unzip the temp file
gunzip(filename)
# The unzipped filename drops the .gz
unzip_filename <- "/tmp/file.nc"
# You can now open the unzipped file with its **filename** rather than the object
cru_nc<-nc_open(unzip_filename)