This is the latest MATLAB-CDF V3.9.0 patch for all systems. This patch includes modules main modules, e.g., spdfcdfread, spdfcdfwrite, spdfcdfinfo, spdfcdfupdate, etc., that provide read/write/update functions to CDF files. It also has functions for CDF epoch data. Get help information from each individual .m script after the downloaded file is expanded. Please note: The files will be extracted into matlab_cdf390_patch or matlab_cdf390_patch-[32|64] directory. This directory contains the following files: AAREADME-390.txt This is the readme text file you're viewing. HOWTO-install.txt This is the help information for installing the CDF patches for MATLAB. matlab_cdf390_lin32.tar.gz This is the compressed file for Linux box running on Intel for 32-bit MATLAB. Built on older MATLAB R2009, this is not tested due to the license issue. matlab_cdf390_lin64.tar.gz This is the compressed file for Linux box running on Intel for 64-bit MATLAB. matlab_cdf390_maci64.tar.gz This is the compressed file for Mac OS X box running on Intel for 64-bit MATLAB before 2023b release. matlab_cdf390_maca64.tar.gz This is the compressed file for Mac OS X box running on Apple Silicon for 64-bit MATLAB of 2023b release and later. matlab_cdf390_win64.[zip|exe] This is WinZip zip or self-extracting file for Windows running 64-bit MATLAB. All modules are made with MS Visual Studio 2015 and MATLAB R2022b. matlab_cdf390_win32.[zip|exe] This is WinZip zip or self-extracting file for Windows running 32-bit MATLAB. All modules are made with MS Visual Studio 2015 and MATALB R2009. They couldn't be tested due to the license issue. matlabhelpv390.txt This file contains the help text information for all modules, i.e., spdfcdfread, spdfcdfwrite, spdfcdfinfo, spdfcdfupdate, and others.