Good day,
The default value of colData is DataFrame(). Not specifying an informative
colData is fine.
countsMini <- matrix(rpois(100, 100), ncol = 10)
colnames(countsMini) <- paste("Cell", 1:10)
rownames(countsMini) <- paste("Gene", 1:10)
SummarizedExperiment(assays = list(counts = countsMini)) # Creates the object
successfully.
But, explicitly specifying an empty DataFrame triggers an error. I don't
understand why it is not equivalent to the constructor's default.
SummarizedExperiment(assays = list(counts = countsMini), colData = DataFrame())
Error in `rownames<-`(`*tmp*`, value = .get_colnames_from_first_assay(assays))
:
invalid rownames length
What is the subtle difference? It also seems like there could be a clearer
error message emitted if this is caught in the right place.
--------------------------------------
Dario Strbenac
University of Sydney
Camperdown NSW 2050
Australia
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