CHECK_DSTYPE

Contents

function [DStype] = check_DStype(obj)
        

Check type of dynamical system

Check if A,B or the nonlinearity feature complex coefficients - if it does contain complex coefficients, then there are no symmetries that can be exploited for computation and the algorithm for computing the manifold is chosen accordingly.

if ~isreal(obj.System.A)
    obj.System.Options.DStype  = 'complex';

elseif ~isreal(obj.System.B)
    obj.System.Options.DStype  = 'complex';

elseif ~checkF(obj)
    obj.System.Options.DStype  = 'complex';

elseif obj.dimManifold == 1
    % System is not complex but computational routine works exactly the
    % same for an overdamped master mode as for complex DS
    obj.System.Options.DStype  = 'complex';

elseif obj.System.Options.ChooseComplexComp
    obj.System.Options.DStype  = 'complex';
elseif ~obj.System.Options.ChooseComplexComp
    obj.System.Options.DStype  = 'real';
end

DStype = obj.System.Options.DStype;
        

end


function [indicator] = checkF(obj)


d = length(obj.System.F) ;
for j = 1:d
    if ~isreal(obj.System.F(j).coeffs)
        indicator = false;
        return
    end
end

indicator = true;
end
        

Published with MATLAB® R2023a