Release 1.22 (2023-03-01) Added "na_replace" argument to ncvar_put(). Release 1.21 (2023-01-05) Minor change to fix compatibility with latest version of R (removed C lang sprintf). Another small update to libraries linked for windows by request of Tomas Kalibera. Release 1.20 (2022-11-30) Small warning message bug fix (thank you to Javier Vaquero-Martinez!) and updates to windows Makefile requested by CRAN (Tomas Kalibera). Release 1.19 (2021-12-14) Changed as per request of R developers to build correctly on Windows using the new R toolchain (Rtools42). Specifically, added the supplided Makevars.ucrt to src/. Release 1.18 (2021-11-17) Fixed a bug in the way files with complicated nested groups were processed. Release 1.17 (2019-10-22): At the request of Jeroen Ooms, added some files to better support operation of the ncdf4 package in Windows. Release 1.0 (2010-02-23): Initial release of the ncdf4 package, which provides a high-level R interface to the netcdf library, versions 4 and earlier. Package ncdf4 REPLACES package ncdf, which supplied an interface to version 3 of the netcdf library. Due to changing coding standards requested by CRAN over the years, the NAMES of the functions in ncdf4 are different than the names in ncdf. For example, the function that used to be called "dim.def.ncdf" in ncdf is now called "ncdim_def" in ncdf4.