Flexibility to add extra slot

[mab658]

In the course of simulation, one may simulate genetic estimated total genetic value (GETGV) in addition to EBV. It is advisable to allow the user to be able to add extra slot so that such effect could be added to the population object.

[gregorgorjanc]

@mab658 you could store this in the misc slot. See getMisc() and setMisc().

[gaynorr]

I'd asked Moshood to post this here earlier. I probably won't act on in soon, but it is something I want to keep here as a potential future enhancement. I'm currently shoving everything through the EBV slot even if it isn't really and EBV. This expansion may also consider covering complex traits that are a function of multiple traits.

[gregorgorjanc]

I hear you @gaynorr! I have been wondering the same myself! The question becomes what are all the slots we want/need!

gv (current slot) & egv (not a slot currently)

bv (not a slot currently and depends on the pop anyway) & ebv (current slot)

dd and aa as above for the bv

index trait? Should we have an option to define a trait that is a function of other traits and always comes at the end of the traits (say gv[, nTraits+1]) and we define such a mapping in the SP function? Or the finalisePop() function?

[gregorgorjanc]

Recent change in the pop@misc slot will make this very easy for the users. See tests code at https://github.com/gaynorr/AlphaSimR/blob/69c30388e067ba4bf73192a1f0a4a446508b3afe/tests/testthat/test-misc.R on how to use pop@misc.