Hi Michael,
I noticed this difference between DataFrame vs data.frame when doing
rbind():
> rbind(data.frame(aa=NA), data.frame(aa=1:2))
aa
1 NA
2 1
3 2
> rbind(DataFrame(aa=NA), DataFrame(aa=1:2))
DataFrame with 4 rows and 1 column
aa
<logical>
1 NA
2 TRUE
3 TRUE
If the DataFrame with NAs is put after the DataFrame with integers,
things look better:
> rbind(DataFrame(aa=1:3), DataFrame(aa=NA))
DataFrame with 4 rows and 1 column
aa
<integer>
1 1
2 2
3 3
4 NA
As a consequence, combining 2 Vector objects, one with no metadata cols
and one with metadata cols, will loose the data if the object with no
metadata cols is put first:
ir1 <- IRanges(1:2, 5)
ir2 <- IRanges(11:13, 14)
mcols(ir2) <- DataFrame(score=2:0)
Then:
> mcols(c(ir1, ir2))
DataFrame with 5 rows and 1 column
score
<logical>
1 NA
2 NA
3 TRUE
4 TRUE
5 FALSE
How hard it would be to bring the rbind,DataFrame method in line with
rbind.data.frame?
Thanks,
H.
--
Hervé Pagès
Program in Computational Biology
Division of Public Health Sciences
Fred Hutchinson Cancer Research Center
1100 Fairview Ave. N, M1-B514
P.O. Box 19024
Seattle, WA 98109-1024
E-mail: hpa...@fhcrc.org
Phone: (206) 667-5791
Fax: (206) 667-1319
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