Given a text like
I want to be able to extract a matched regular expression from a piece of
text.
this apparently works, but is pretty ugly
# some html
test-/trtrth88958/ththAbcdsef/thth67.8S/thth68.9\nW/thth26m/th
# a pattern to extract 5 digits
pattern-[0-9]{5}
# regexpr returns a start
Here are two ways to extract 5 digits.
In the first one \\1 refers to the portion matched between the
parentheses in the regular expression.
In the second one strapply is like apply where the object to be worked
on is the first argument (array for apply, string for strapply) the
second modifies
Thanks I was looking at that package and reading your mails in the archive.
I think my tiny mind got twisted in the regexp..
On Wed, May 5, 2010 at 2:35 PM, Gabor Grothendieck
ggrothendi...@gmail.comwrote:
Here are two ways to extract 5 digits.
In the first one \\1 refers to the portion
test
[1]
/trtrth88958/ththAbcdsef/thth67.8S/thth68.9\nW/thth26m/th
sub(.*(\\d{5}).*, \\1, test)
[1] /th
sub(.*([0-9]{5}).*,\\1,test)
[1] 88958
I think the / in the source throws something off.
as the group capture appears to not be working, except the bracket version
it did.
On Wed, May
That's not what I get:
test-/trtrth88958/ththAbcdsef/thth67.8S/thth68.9\nW/thth26m/th
sub(.*(\\d{5}).*, \\1, test)
[1] 88958
R.version.string
[1] R version 2.10.1 (2009-12-14)
I also got the above in R 2.11.0 patched as well.
On Wed, May 5, 2010 at 5:55 PM, steven mosher
On May 5, 2010, at 5:35 PM, Gabor Grothendieck wrote:
Here are two ways to extract 5 digits.
In the first one \\1 refers to the portion matched between the
parentheses in the regular expression.
In the second one strapply is like apply where the object to be worked
on is the first argument
Hmm.
I have R11 just downloaded fresh.
I'll reload a new session..and revert. I will note that I've had trouble
with \\d
which is why I was using [0-9]
MAC here.
On Wed, May 5, 2010 at 3:00 PM, Gabor Grothendieck
ggrothendi...@gmail.comwrote:
That's not what I get:
I am using Vista. Another thing to try is strapply using the tcl
engine (assuming you do have tcltk capabilities) and the R engine. On
Vista R 2.11.0 patched I get the same result:
capabilities()[[tcltk]]
[1] TRUE
strapply(test, \\d{5}, c, engine = tcl)[[1]]
[1] 88958
strapply(test, \\d{5},
Thnks,
perhaps we should report it
On Wed, May 5, 2010 at 4:52 PM, Gabor Grothendieck
ggrothendi...@gmail.comwrote:
I am using Vista. Another thing to try is strapply using the tcl
engine (assuming you do have tcltk capabilities) and the R engine. On
Vista R 2.11.0 patched I get the same
Yes, you could bring it up on the R-sig-mac or file a bug report.
On Wed, May 5, 2010 at 10:11 PM, steven mosher mosherste...@gmail.com wrote:
Thnks,
perhaps we should report it
On Wed, May 5, 2010 at 4:52 PM, Gabor Grothendieck ggrothendi...@gmail.com
wrote:
I am using Vista. Another
10 matches
Mail list logo
