Hi Stephanie,

On 04/19/2013 11:55 AM, Stephanie M. Gogarten wrote:
Hi all,

There is a non-exported function in VariantAnnotation called
.toDNAStringSetList that converts a vector of comma-separated character
strings to a DNAStringSetList.  I'd like to use this code in a package
I'm working on.  Would it make sense to export this from Biostrings?  If
not, what is the proper way to attribute code if I borrow a few lines
from .toDNAStringSetList?

This should be a 1-liner but the 1-liner fails at the moment because the
DNAStringSetList() constructor doesn't work on a list:

  > comma_sep_strings <- c("AA,TT", "ACGT", "", "TT,A,,TAG")
  > DNAStringSetList(strsplit(comma_sep_strings, ",", fixed=TRUE))
  Error in strsplit(comma_sep_strings, ",") : non-character argument

Of course this should work (and it will work tomorrow after you run
biocLite()). In the mean time the workaround is to use do.call():

  > do.call(DNAStringSetList, strsplit(comma_sep_strings, ",", fixed=TRUE))
  DNAStringSetList of length 4
  [[1]] AA TT
  [[2]] ACGT
  [[3]]   A DNAStringSet instance of length 0
  [[4]] TT A  TAG

Cheers,
H.

PS: Calling strsplit() with 'fixed=TRUE' makes it about 4x faster :-)


thanks,
Stephanie

_______________________________________________
[email protected] mailing list
https://stat.ethz.ch/mailman/listinfo/bioc-devel

--
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: [email protected]
Phone:  (206) 667-5791
Fax:    (206) 667-1319

_______________________________________________
[email protected] mailing list
https://stat.ethz.ch/mailman/listinfo/bioc-devel

Reply via email to