In case anyone else is interested, here's one way to navigate to release notes for older versions of MATLAB.
- Start at The MathWorks home page.
- Click on Support.
- Click on Product Documentation.
- Click on MATLAB.
- Click on MATLAB Release Notes.
Note that release notes are available there for releases back to R14 in 2004. The release notes summarize new features, compatibility considerations, and fixed and known bugs.
Similarly, you can find release notes for the Image Processing Toolbox going back to version 2.2.2 in 2000.
We aren't always perfect about remembering to include everything in the release notes, but this is something we're trying to get better at.
To answer Oliver's original question: Since MATLAB 6.5.1 (R13 SP1 in 2003), imwrite has written a CMYK TIFF when passed an M-by-N-by-4 input array.
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