get degtopt matrices

[jarlebring]

We need a function which returns the Degopt data in a user friendly way: the hessenberg matrices in the manuscript (and the constructor version Degopt(Ha,Hb,y)):

(Ha,Hb,y)=get_degopt_coeffs(graph)

It should be a question of just appropriately combining get_degopt_crefs(graph) with get_coeffs.

[eringh]

Seems as if it could build on something like this.

GraphMatFun.jl/src/degopt.jl

Lines 228 to 241 in 1b44fb6

	function get_hess(degopt::Degopt)
	p=size(degopt.x,1);
	T=eltype(degopt.y)
	HA=zeros(T,p,p);
	HB=zeros(T,p,p);
	for i=1:p
	HA[i,1:(i+1)]=degopt.x[i][1]
	HB[i,1:(i+1)]=degopt.x[i][2]
	end
	return (HA,HB);
	end

[jarlebring]

Indeed. It seems I started it but was interrupted. 🤯 (get_hess is not a good name though.)