Issue 48: Ebola vignette

[athowes]

Description

Status: work in progress! Contains material best written after package redevelopment -- can be used for DDD

This PR will close #48. The point of this vignette is to demonstrate some of the more advanced capabilities of the epidist package.

Checklist

• My PR is based on a package issue and I have explicitly linked it.
• I have included the target issue or issues in the PR title in the for Issue(s) issue-numbers: PR title
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• I have tested my changes locally.
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[athowes]

Did you ever fit different delay distributions by sex or other covariates @seabbs @parksw3 for the ebola data?

That seems like a fun thing to do and would demonstrate some of the functionality of having this brms set-up.

[parksw3]

We did not. And I agree it would be a really useful demonstration. Currently packing to get ready to move to Canada tomorrow... will engage more after I move...

[seabbs]

Agree with both of you that this would be a nice thing to at least plan to do here as its within the functionality of the current package but hasn't been explored but is suggested as a good idea in Charniga et al. I say plan as we need to make sure any current design decisions don't close the door on this but if time also just doing it now would be good.

[athowes]

Note to self that after working on the in depth model vignette (#66) I am now in more of a position to implement a basic version of the gamma delay into this PR.

[athowes]

Updates based on #70:

• Can now do gamma
• Can now do formula for by space or sex more easily
• Need to update otherwise to be compatible with new function name