NEWS

metalcor 1.0.5 (2026-10-29)

Function metalcor now does not require SNP id in input studies, but this column can be used to match variants with new option useid = TRUE. Furthermore, ref/alt switching can now be turned off by setting the new option noswitch = TRUE.

Function metalcor now requires input studies to have ref and alt columns, and switches them correctly (correcting coefficient sign) when they are switched between studies. This saves users time when ref/alt alleles are switched in real studies, but users must still ensure that data is otherwise well harmonized.

Functions *prodcor fixed a bug revealed by a new warning in R-devel only: "object length is not a multiple of subscript length". The bug was there previously, though it occurred rarely, but it was silent in previous R versions.
- From R-devel news, this is the change that triggers the new warnings addressed by this fix: "x[logi], with logi a logical index, now warns if length(x) is not a multiple of length(logi), fixing PR#19155 thanks to several participants in two R Dev Days and the R Sprint in 2026."

Function pprodcor corrected low accuracy of calculations for abs(rho) values between 0.95 and 1, which gets particularly worse as 1 is approached, and caused large errors at 0.999, for example. Correction solves problems upstream, in qprodcor and rho_from_median.
Added vignette

First commit, includes all functions well documented with examples, thoroughly tested, and exported as needed; also description, readme, and this news; passes check.