Hi everybody,
I'm quite weak with regular expression, and I need some help...
I have strings of the type
>a
[1,] "ppe46 Rv3018c MT3098/MT3101 MTV012.32c"
[2,] "ppe16 Rv1135c MT1168"
[3,] "ppe21 Rv1548c MT1599 MTCY48.17"
[4,] "ppe12 Rv0755c MT0779"
[5,] "PE_PGRS51 Rv3367"
[etc..for several hundreds]
I want have instead only:
[1,] "Rv3018c"
[2,] "Rv1135c"
[3,] "Rv1548c"
[4,] "Rv0755c"
[5,] "Rv3367"
Besides these examples, the only thing I know for sure is that the "magic"
substrings I want to extract are entire word all starting by "Rv". So
"Rvxxxxx", preceded and followed by a space, and of a variable length. I don't
have any other infos.
Do you know how to pick them? I checked for their presence using grep, and
"\\<Rv*\\>" expression, I tried with some string functions from Hmisc, or in
the other way, by substituting with empty strings everything except the Rv
word, but I didn't achieve that much...
Could you please give me some suggestions?
Thanks a lot,
Giulio
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