Re: [R] how to generate sequence a - z
Bernd Weiss wrote:
-BEGIN PGP SIGNED MESSAGE-
Hash: SHA1
skestin schrieb:
| I suppose it's very simple but I can't find the way to generate a
sequence of
| characters, e.g. from a to z.
| Could you please help me with this?
?letters
letters
letters is okay for just that sequence, or parts of it, but might
not be general enough for the original poster...
I just discovered 'charToInt' and 'intToChar' in the R.oo package:
intToChar(65:68)
[1] A B C D
Then you can define cseq:
cseq =
function(from,to,by=1){
from=charToInt(from)
to=charToInt(to)
intToChar(seq(from,to,by))
}
and do:
cseq('A','G')
[1] A B C D E F G
cseq('A','G',2)
[1] A C E G
cseq('a','A',-2)
[1] a _ ] [ Y W U S Q O M K I G E C A
Note this uses ASCII codes and not whatever your language alphabet is.
I'd overload ':' for this and then you could do 'a':'z', but ':' heads
into .Primitive territory...
Barry
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Re: [R] how to generate sequence a - z
On 1/29/2008 7:39 AM, skestin wrote:
I suppose it's very simple but I can't find the way to generate a sequence of
characters, e.g. from a to z.
Could you please help me with this?
If you want the standard collation sequence, use the letters variable,
as others have said.
If you want the sequence that applies in your locale (where does ü
fall?), it's harder. I don't know a simple way, but this gives you
collation order in the German locale in Windows:
x - as.raw(32:255)
y - readChar(x, rep(1, 224))
Sys.setlocale(LC_COLLATE, German)
[1] German_Germany.1252
sort(y)
[1] \177 �����'-–
[11] — !\ #$%(
[21] )*,./:;?@[
[31] \\ ]^ˆ_`{|}~
[41] ¡¦¨¯´¸¿˜‘’
[51] ‚“”„‹›+=
[61] ±«»×÷¢£¤¥§
[71] ©¬®°µ¶·†‡•
[81] …‰€0¼½¾1¹2
[91] ²3³456789a
[101] AªáÁàÀâÂäÄ
[111] ãÃåÅæÆbBcC
[121] çÇdDðÐeEéÉ
[131] èÈêÊëËfFƒg
[141] GhHiIíÍìÌî
[151] ÎïÏjJkKlLm
[161] MnNñÑoOºóÓ
[171] òÒôÔöÖõÕøØ
[181] œŒpPqQrRsS
[191] šŠßtTþÞ™uU
[201] úÚùÙûÛüÜvV
[211] wWxXyYýÝÿŸ
[221] zZžŽ
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Re: [R] how to generate sequence a - z
letters [1] a b c d e f g h i j k l m n o p q r s t u v w x y z LETTERS [1] A B C D E F G H I J K L M N O P Q R S T U V W X Y Z Hope that will help. Mama - Mama Attiglah, PhD Advanced Research Center Quantitative Research Analyst State Street Bank +44(0)20 7698 6290 (Direct Line) +44 (0)207 004 2968 (Direct Fax) Please visit our Web site at www.ssga.com -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Bernd Weiss Sent: 29 January 2008 12:43 To: skestin; [EMAIL PROTECTED] Subject: Re: [R] how to generate sequence a - z -BEGIN PGP SIGNED MESSAGE- Hash: SHA1 skestin schrieb: | I suppose it's very simple but I can't find the way to generate a sequence of | characters, e.g. from a to z. | Could you please help me with this? ?letters letters HTH, B. -BEGIN PGP SIGNATURE- Version: GnuPG v1.4.7 (MingW32) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org iD8DBQFHnx9IUsbvfbd00+ERAuasAKCYIZ9KC4c3NoDFfkdDP0MyZckinwCbBQv7 CX249me9JFbVlWNPy/mDtV0= =Vaea -END PGP SIGNATURE- __ 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.
[R] how to generate sequence a - z
I suppose it's very simple but I can't find the way to generate a sequence of characters, e.g. from a to z. Could you please help me with this? -- View this message in context: http://www.nabble.com/how-to-generate-sequence-%22a%22---%22z%22-tp15158509p15158509.html Sent from the R help mailing list archive at Nabble.com. __ 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.
Re: [R] how to generate sequence a - z
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 skestin schrieb: | I suppose it's very simple but I can't find the way to generate a sequence of | characters, e.g. from a to z. | Could you please help me with this? ?letters letters HTH, B. -BEGIN PGP SIGNATURE- Version: GnuPG v1.4.7 (MingW32) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org iD8DBQFHnx9IUsbvfbd00+ERAuasAKCYIZ9KC4c3NoDFfkdDP0MyZckinwCbBQv7 CX249me9JFbVlWNPy/mDtV0= =Vaea -END PGP SIGNATURE- __ 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.
Re: [R] how to generate sequence a - z
-- X-USF-Spam-Status: hits=-2.6 tests=BAYES_00 X-USF-Spam-Flag: NO Hello, Sequences of letters can be generated by typing LETTERS #for capital letters or letters #for small letters Best wishes Christoph skestin schrieb: I suppose it's very simple but I can't find the way to generate a sequence of characters, e.g. from a to z. Could you please help me with this? __ 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.
