Hi all,
What is the Ruby way to extract a string like this?
old_string=“5’-AAAAAAAA CCCCCCCC TTT GGGGG GGGG-3’”
new_string=“AAAAAAAACCCCCCCCTTTGGGGGGGGG”
Thank you very much,
Li
On Jan 10, 2:38 pm, Li Chen [email protected] wrote:
–
Posted viahttp://www.ruby-forum.com/.
new_string = old_string.gsub(/[^A-Z]/, ‘’)
That substitutes ‘’ (empty string) for any character that is not (^) a
capital letter (A-Z).
To do the same thing in place: old_string.gsub!(/^A-Z]/, ‘’)
Hi –
On 10/01/2008, Li Chen [email protected] wrote:
Hi all,
What is the Ruby way to extract a string like this?
old_string=“5’-AAAAAAAA CCCCCCCC TTT GGGGG GGGG-3’”
new_string=“AAAAAAAACCCCCCCCTTTGGGGGGGGG”
old_string=“5’-AAAAAAAA CCCCCCCC TTT GGGGG
GGGG-3’”.scan(/[A-Z]+/).to_s
And variations thereof.
– Thomas A.
yermej wrote:
On Jan 10, 2:38?pm, Li Chen [email protected] wrote:
–
Posted viahttp://www.ruby-forum.com/.new_string = old_string.gsub(/[^A-Z]/, ‘’)
That substitutes ‘’ (empty string) for any character that is not (^) a
capital letter (A-Z).To do the same thing in place: old_string.gsub!(/^A-Z]/, ‘’)
Thank you so much.
Li
Li Chen wrote:
What is the Ruby way to extract a string like this?
old_string=“5’-AAAAAAAA Â Â CCCCCCCC Â TTT Â GGGGG Â Â GGGG-3’”
new_string=“AAAAAAAACCCCCCCCTTTGGGGGGGGG”
new_string = old_string.gsub(/[^ACTG]/i,"")
This removes anything that is not an A, C, T or G (case insensitively.
If you
want lower case chars acgt to be removed, too, remove the i from the
regex).
HTH,
Sebastian
yermej wrote:
On Jan 10, 2:38?pm, Li Chen [email protected] wrote:
–
Posted viahttp://www.ruby-forum.com/.new_string = old_string.gsub(/[^A-Z]/, ‘’)
That substitutes ‘’ (empty string) for any character that is not (^) a
capital letter (A-Z).To do the same thing in place: old_string.gsub!(/^A-Z]/, ‘’)
Hi yermej,
One more question: How do I change all the As into T and all the Ts into
A in the old sttring?
old_s=“AAATTAA”
new_s=“TTTAATT”
thanks,
Li
Sebastian H. wrote:
Li Chen wrote:
How do I change all the As into T and all the Ts into
A in the old sttring?old_s=“AAATTAA”
new_s=“TTTAATT”new_s = old_s.tr(“AT”, “TA”)
or if you also want GC
new_s = old_s.tr(“ATGC”, “TACG”)
Thank you very much,
Li
On Jan 10, 2008, at 2:38 PM, Li Chen wrote:
Hi all,
What is the Ruby way to extract a string like this?
old_string=“5’-AAAAAAAA CCCCCCCC TTT GGGGG GGGG-3’”
“5’-AAAAAAAA CCCCCCCC TTT GGGGG GGGG-3’”.delete("^ACTG")
James Edward G. II
Li Chen wrote:
How do I change all the As into T and all the Ts into
A in the old sttring?old_s=“AAATTAA”
new_s=“TTTAATT”
new_s = old_s.tr(“AT”, “TA”)
or if you also want GC
new_s = old_s.tr(“ATGC”, “TACG”)