Function to backcalculate Rt and the growth rate

[seabbs]

As shown here:

Rt-without-renewal/EpiAware/docs/src/examples/getting_started.jl

Lines 331 to 332 in 0c03621

	n = epi_model.data.len_gen_int
	Rt_denom = [dot(reverse(epi_model.data.gen_int), true_infections[(t - n):(t - 1)])

We need a function to backcalculate Rt and the growth rate from infections generated in an arbitrary model

[SamuelBrand1]

This is a good idea, but not really implementable in an arbitrary model. Do you mean one with a single infected type as per how we have been doing it?

[seabbs]

yes and I was thinking we would use it in the generated quantities return and make sure it only got called via multiple dispatch when it would work (would need to have some kind of function that it nested in though not sure what to call that given that generated_quantities is taken...) -> maybe situtational_awareness_metrics()?

[seabbs]

Handling this as part of #165

[seabbs]

backcalculating Rt is handled in #184

[seabbs]

Is this complete? I don't think we have a function for the growth rate explicitly (though as it can wrap the Rt one perhaps we do)

[SamuelBrand1]

I'm doing this for the pipeline... which means avoiding dealing with multi-groups. Would that close this issue?

[seabbs]

Shall we just make a expected_growth or similar to match the current expected_Rt in EpiAware and use that?