[Bioc-devel] subset fails on a DataFrame with 0 cols

[Hervé Pagès]

Hi Michael,

Works if the DataFrame has columns:

   library(IRanges)
   DF1 <- DataFrame(aa=letters[1:4])
   DF0 <- DF1[0]

Then:

   > DF1
   DataFrame with 4 rows and 1 column
              aa
     <character>
   1           a
   2           b
   3           c
   4           d

   > DF0
   DataFrame with 4 rows and 0 columns

   > subset(DF1, c(FALSE, TRUE))
   DataFrame with 2 rows and 1 column
              aa
     <character>
   1           b
   2           d

OK. But:

   > subset(DF0, c(FALSE, TRUE))
   Error in NSBS(i, x, exact = exact, upperBoundIsStrict = !allow.append) :
     subscript is a logical vector with out-of-bounds TRUE values

This currently causes subset() to fail on a GRanges object with no
metadata cols.

Thanks,
H.


-- 
Hervé Pagès

Program in Computational Biology
Division of Public Health Sciences
Fred Hutchinson Cancer Research Center
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