Here is one way
a_clip <- sub("^([0-9]+\\.[0-9]+\\.[0-9]+).*$", "\\1", a)
-----Original Message-----
From: r-help-boun...@r-project.org [mailto:r-help-boun...@r-project.org] On
Behalf Of Lorenzo Cattarino
Sent: Tuesday, 13 July 2010 5:20 PM
To: r-help@r-project.org
Subject: [R] modifying vector elements
Hello R-users,
I have a very large vector (a) containing elements consisting of numbers
and letters, this is the i.e.
a
[1] "1.11.2a" "1.11.2d" "1.11.2e" "1.11.2f" "1.11.2x1"
"1.11.2x1b"
[7] "1.11.2x2" "1.11.2x2a" "1.11.2x2b" "1.11.2x3" "1.11.2x4"
"1.11.2x4a"
[13] "1.11.2x5" "1.11.3a" "1.11.3b" "1.11.3x1" "1.11.3x1b"
"1.11.3x1c"
[19] "1.11.3x1d" "1.12.1x1" "1.12.1x1b" "1.12.1x2" "1.12.1x3"
"1.12.1x3b"
[25] "1.12.1x4" "1.3.1x1" "1.3.4x1" "1.3.6a" "1.3.6c"
"1.3.6x1"
[31] "1.3.6x1a" "1.3.6x1b" "1.3.6x1c" "1.3.6x1d" "1.3.6x1e"
"1.3.6x2"
[37] "1.3.7a" "1.3.7b" "1.3.7c" "1.3.7d" "1.5.4a"
"1.5.4b"
[43] "1.5.4x1a" "1.5.4x1b" "1.5.4x2" "1.5.4x3" "1.5.4x6"
"1.5.5b"
[49] "1.5.6a" "1.5.6b" "1.5.6x1" "1.5.6x2" "1.5.7a"
"1.5.7b"
[55] "1.5.7x1" "1.5.7x2" "1.7.1b" "1.7.1c" "1.7.1e"
"1.7.1f"
[61] "1.7.1g" "1.7.1i" "1.7.1j" "1.7.1k" "1.7.1x1"
"1.7.1x2"
[67] "1.7.1x3" "1.7.1x4" "1.7.1x5" "1.7.2b" "1.7.2x1"
"1.9.1a"
How can I remove from each record everything that is after the number
after the second dot? E.g.:
1.11.2a becomes 1.11.2, 1.12.1x4 becomes 1.12.1, 1.9.1a becomes
1.9.1...and so forth.
Thanks
Lorenzo
Lorenzo Cattarino
PhD Candidate (Confirmed)
Landscape Ecology and Conservation Group
Centre for Spatial Environmental Research
School of Geography, Planning and Environmental Management
The University of Queensland
Brisbane, Queensland, 4072, Australia
Telephone 61-7-3365 4370, Mobile 0410884610
Email l.cattar...@uq.edu.au
Internet http://www.gpem.uq.edu.au/cser <http://www.gpem.uq.edu.au/cser>
[[alternative HTML version deleted]]
______________________________________________
R-help@r-project.org mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
______________________________________________
R-help@r-project.org mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
