dear ALL See the example, result <- vmatchPattern(currentPattern, sread(currentReads), max.mismatch= max.mismatchs, min.mismatch=0); startIndex(result) [[1]] [1] 1 [[2]] [1] 1 [2] 2 if i want to get only the [1] element from the [[1]] and [[2]] what can i do? thx -- shan gao Room 231(Dr.Fei lab) Boyce Thompson Institute Cornell University Tower Road, Ithaca, NY 14853-1801 Office phone: 1-607-254-1267(day) Official email:sg839 at cornell.edu Facebook:http://www.facebook.com/profile.php?id=100001986532253

On 11/02/2012 10:51 AM, wang peter wrote: > dear ALL > > See the example, > result <- vmatchPattern(currentPattern, sread(currentReads), > max.mismatch= max.mismatchs, min.mismatch=0); > startIndex(result) > [[1]] > [1] 1 > > [[2]] > [1] 1 [2] 2 > > > if i want to get only the [1] element from the [[1]] and [[2]] > > what can i do? Not clear to me whether (1) you know about the existence of sapply, you tried it, and you ran into some performance issues, or (2) you don't know about sapply or how to loop on a list object in general. Can you clarify? Thanks, H. > > thx > -- 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: hpages at fhcrc.org Phone: (206) 667-5791 Fax: (206) 667-1319