As Lori has noted Bioconductor users have access to many chain files
through AnnotationHub -- please
let us know if these are not sufficient for your needs.
> library(AnnotationHub)
> ah = AnnotationHub()
> query(ah, "chain")
AnnotationHub with 1513 records
# snapshotDate(): 2018-08-01
# $dat
You could see if there are any appropriate chain files provided in
AnnotationHub
(https://bioconductor.org/packages/release/bioc/html/AnnotationHub.html)
library(AnnotationHub)
ah = AnnotationHub( )
query(ah, "chain file")
or investigate other packages that do similar functions or address a
