"Undefined function or variable 'imsplit'."

I am using Matlab 2015a and it says "Undefined function or variable 'imsplit'." when I run my code. Is this function not deifned in matlab 2015a ? If not, what is the best alternative for "imsplit" in 2015a ?

Also, I have been coming across so many functions that I found undifined in 2015 that are actually released in other versions. Is there a place I could find all of them at one place ?

Answer 1

[Walter Roberson]

https://www.mathworks.com/help/images/ref/imsplit.html

Requires R2018b

You should be using the "doc" function in your MATLAB release to find the functions available in your release.

[Thulitha Theekshana]

Thank you for your quick response. But I want to know the alternatives in 2015a which would be good substitutes for functions later released. I don't think there is a mapping like that in the docs. Can you please elaborate ?

[Walter Roberson]

Indexing is an excellent substitute for imsplit

R = YourImage(:, :, 1);

[Walter Roberson]

I do not know of any mapping such as you describe.

There have been many many new functions in the toolboxes. The number of functions available through matlab is over 50000 if I recall correctly. There are 77 or more new functions for image processing between R2015a and r2019a, not counting any new classes.

Answer 2

[per isakson]

Maybe Imsplit, Split image or matrix into subparts using simple syntax by Jurgen. (Created with R2008a) of the File Exchange

"Is there a place I could find all of them at one place" AFAIK: The release notes is the best place there is.