SpatialFeaturePlot returning error

[cz0316]

Recently, I got a new error when I was using the 'SpatialPlot' function.
However, the same code worked fine a few days ago.

SpatialPlot(st.colon1,features=c('B2M'))

Error in vapply(X = keyed.objects, FUN = function(x) { :
values must be length 1,
but FUN(X[[2]]) result is length 0

[AustinHartman]

Thanks for reporting this! It looks like one of the keys in st.colon1 is unexpectedly missing. The fix for this required an update to SeuratObject which Seurat depends on. You can install the fix using devtools::install_github("mojaveazure/seurat-object", "develop") and then run st.colon1 <- UpdateSeuratObject(st.colon1). After that, SpatialPlot should work. Alternatively, if you prefer not to install SeuratObject while it's still in development you can manually add the missing key to the object like this: slot(slot(st.colon1, "assays")$RNA, "key") <- "rna_"