Example multi-context QtlSumStats (S4) for mash demos

A QtlSumStats collection covering one trait ("ENSG_example") across three synthetic contexts (brain, blood, muscle) on the same toy PLINK1 panel used by qtl_sumstats_example. The signal pattern is wired for mash pattern recovery: one variant is causal in all three contexts (the shared eQTL), one is brain-only, one is blood-only, and muscle carries only the shared signal. Per-variant BETA, SE, Z, N, and MAF are populated, so the bundle works with both inputScale = "beta" (the default) and inputScale = "z" paths through mashPipeline.

Format

A QtlSumStats S4 collection with three rows (one per context) backed by GRanges of 200 chr22 variants each.

Examples

data(qtl_sumstats_multicontext_example)
qtl_sumstats_multicontext_example
#> QtlSumStats: 3 entries, genome build hg19
#>   1 studies, 3 contexts, 1 traits
#>   LD sketch: plink1 @ pecotmr://extdata/toy_canonical
getContexts(qtl_sumstats_multicontext_example)
#> [1] "brain"  "blood"  "muscle"