The difference between MATLAB 2018b and MATLAB 2018a

I encountered a problem that code in matlab 2018b (installed in laptop) is feasible, while the same code running in matlab 2018a (installed in linux) would report errors. I am quite confused. Hope somebody can help me to understand this problem. Thanks.

[Bruno Luong]

The 'all' option is not necessary for this line of code.

You might remove it altogether so it can work withh ay release.

Answer 1

[Cris LaPierre]

R2018a does not support the 'all' option. See here: https://www.mathworks.com/help/releases/R2018a/matlab/ref/sum.html

R2018b does. See here: https://www.mathworks.com/help/releases/R2018b/matlab/ref/sum.html

[Steven Lord]

Cris is correct. The ability to specify 'all' as the dimension input to twelve functions (including sum) was introduced in release R2018b as stated in the Release Notes.

[Yovan Ho]

Thanks all!!!