Cannot use buildReferenceFromSeurat with RunHarmony v1.0.3

[dy-lin]

I am trying to build a symphony reference using an existing Seurat object that I've already run harmony on.

However, RunHarmony no longer produces anything in the misc slot of the reduction, so I cannot do any of the calculations that have to do with res$R <- t(obj@reductions$harmony@misc$R[colnames(obj),])

If I try to use the RunHarmony.Seurat provided in the vignette, I run into issue #48

I want to avoid downgrading my Harmony version. Is there a way to access what was stored in the misc$R slot in the updated RunHarmony command? If the R variable is no longer stored in later versions of Harmony, is it really necessary for reference building in Symphony?

[maestriev]

Were you able to find a work around for this? I am using harmony 1.2.0 and Seurat 5.1.0. I've already run harmony on an existing Seurat object and annotated my reference cells. I was also planning to use symphony to map new datasets; however, I also noticed this issue about missing the misc$R slot. Thanks!

srt.sct = RunHarmony(srt.sct, assay.use="SCT", group.by.vars = "sampleid.pid", reduction.save = "rna_sct_harmony")