Variable size arrays for code generation

1 view (last 30 days)
Matthias Kreuzer
Matthias Kreuzer on 10 Jan 2023
Answered: Mark McBroom on 14 Jan 2023
I am trying to generate c++ code with matlab coder and encounter a problem. I have implemented a CNN from scratch and thus my output variable 'a' changes its size after every layer/after every call of process_layer:
a = process_layer(a, layer).
Even though I declared coder.varsize('a') beforehand I get the error message: ' ?? Left hand side of the assignment has fewer dimensions than the right hand side: [:? x :?] cannot be assigned from [:? x :? x:?]. It seems like the coder expects the number of elements in each dimensions to change but not the number of dimensions. For example 'a' can be be two-dimensional and the output of process_layer is three-dimensional.
Can you help?

Answers (1)

Mark McBroom
Mark McBroom on 14 Jan 2023
Try first declaring a to be a 3-D matrix before declaring varsize:
a = zeros(2,2,2);
a= process_layer(a,layer)


Find more on MATLAB Coder in Help Center and File Exchange

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by