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MATLAB for C code

I follow MathWorks tutorial on converting MATLAB code to C code. The first step is to enter

% # Codegen

after every function that I want to convert to C code, however this gave me the following hint for the code below.

function lanes=find_lanes(B,h, stats)
% Find the regions that look like lanes
%#codegen

lanes = {};
l=0;
    for k = 1:length(B)
    metric = stats(k).MajorAxisLength/stats(k).MinorAxisLength;
    %testlane(k);
    %end
    %function testlane(k)
        coder.inline('never');
        if metric > 5 & all(B{k}(:,1)>100)
            l=l+1;
            lanes(l,:)=B(k);
        else
            delete(h(k))
        end
    end
end

around braces:

code generation only supports cell operations for "varargin" and "Varargout"

Another invitation says

Code generation does not support the growth of the size of the "tracks" of a variable by indexing

where the bands are mentioned for the second time.

Input arguments to the function:

B. bwboundaries Image Processing toolbox. P-by-1, P - . Q-by-2. . Q - .

h - , 1 X length (B), , :

h(K)=plot(boundary(:,2), boundary(:,1), 'g', 'LineWidth', 2);//boundary(:,1) - Y coordinate, boundary(:,2) - X coordinate.

- 19x1, regionprops :   MajorAxisLength   MinorAxisLength ()

, , . Advance!

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