give example of matching individuals to something written to metadata

[petrelharp]

Say you want to output something about individuals within SLiM (say, a tag that is not stored in metadata, or a computed, random phenotype), and match it up to the individuals in the tree sequence. This could be stored in top-level metadata, as a vector (if for presently-alive individuals) or a dictionary (more generally, with pedigreeID as keys). We should have an example of this, as discussed in #198 .

[petrelharp]

There's an example of this in tskit-dev/tskit#2842

[bhaller]

There is an example of it in the SLiM manual for SLiM 5.0, too.