Fixed in release and devel (IRanges).

Thanks,
Michael


On Tue, May 20, 2014 at 1:22 AM, Julian Gehring <julian.gehring@embl.de>wrote:

> Hi,
>
> If I want to bind two GRanges object with a matrix in the meta columns,
> the concatenation of the two fails in bioc-stable (GenomicRanges 1.16.3)
> and bioc-devel (GenomicRanges 1.17.13) with:
>
> '''
> Error in validObject(.Object) :
>   invalid class “GRanges” object: number of rows in DataTable 'mcols(x)'
> must match length of 'x'
> '''
>
> If multiple columns are used, the class of of the first column seem to
> determine the behavior:
>
> #+BEGIN_SRC R
>   library(GenomicRanges)
>
>   ## sample data, two identical GRanges
>   gr1 = gr2 = GRanges(1, IRanges(1:2, width = 1))
>   m = matrix(1:4, 2)
>
>   ## the vector alone works
>   mcols(gr1) = mcols(gr2) = DataFrame(x = 1)
>   c(gr1, gr2) ## works
>
>   ## vector first, matrix second works
>   mcols(gr1) = mcols(gr2) = DataFrame(x = 1, m = I(m))
>   c(gr1, gr2) ## works
>
>   ## the matrix alone fails
>   mcols(gr1) = mcols(gr2) = DataFrame(m = I(m))
>   c(gr1, gr2) ## fails
>
>   ## matrix first, vector second fails
>   mcols(gr1) = mcols(gr2) = DataFrame(m = I(m), x = 1)
>   c(gr1, gr2) ## fails
> #+END_SRC
>
> Best wishes
> Julian
>
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