You can use letters[1:4]. I hope that this helps, John> -----Original Message----- > From: r-help-bounces at stat.math.ethz.ch > [mailto:r-help-bounces at stat.math.ethz.ch] On Behalf Of ?? > Sent: Tuesday, September 07, 2004 7:42 PM > To: r-help at stat.math.ethz.ch > Subject: [R] a little question about R > > Hello,sir: Here's a little question about R which needs your > help.Thanks in advance. > If I wanna make a sequence just like a,b,c,d (In other > words,a vector consists of 4 characters :a,b,c,d ).How can I > do it in a shortcut manner? Yes,I can do it as following: > c("a","b","c","d") and the result is:[1] "a" "b" "c" "d". > But I remember there's a shortcut manner to do the same > thing,something like c("a":"d").But the system said:"Error in > "a":"d" : NA/NaN argument" So I wonder the correct method to > do it(I remember the expression is very similar with > c("a":"d")). Thanks from the bottom of my heart. My best regards! >
Try letters[1:4] -roger ?????? wrote:> Hello,sir: Here's a little question about R which needs your help.Thanks in advance. > If I wanna make a sequence just like a,b,c,d (In other words,a vector consists of 4 characters :a,b,c,d ).How can I do it in a shortcut manner? Yes,I can do it as following: c("a","b","c","d") and the result is:[1] "a" "b" "c" "d". > But I remember there's a shortcut manner to do the same thing,something like > c("a":"d").But the system said:"Error in "a":"d" : NA/NaN argument" So I wonder the correct method to do it(I remember the expression is very similar with > c("a":"d")). Thanks from the bottom of my heart. My best regards! > > ______________________________________________ > R-help at stat.math.ethz.ch mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html >
Hello,sir: Here's a little question about R which needs your help.Thanks in
advance.
If I wanna make a sequence just like a,b,c,d (In other words,a vector consists
of 4 characters :a,b,c,d ).How can I do it in a shortcut manner? Yes,I can do it
as following: c("a","b","c","d") and the
result is:[1] "a" "b" "c" "d".
But I remember there's a shortcut manner to do the same thing,something like
c("a":"d").But the system said:"Error in
"a":"d" : NA/NaN argument" So I wonder the correct
method to do it(I remember the expression is very similar with
c("a":"d")). Thanks from the bottom of my heart. My best
regards!
letters[1;4]
LETTERS[1:4] for capitals.
Hope this helps,
Matt Wiener
-----Original Message-----
From: r-help-bounces at stat.math.ethz.ch
[mailto:r-help-bounces at stat.math.ethz.ch] On Behalf Of xmeng at
capitalbio.com
Sent: Tuesday, September 07, 2004 8:42 PM
To: r-help at stat.math.ethz.ch
Subject: [R] a little question about R
Hello,sir: Here's a little question about R which needs your help.Thanks in
advance.
If I wanna make a sequence just like a,b,c,d (In other words,a vector
consists of 4 characters :a,b,c,d ).How can I do it in a shortcut manner?
Yes,I can do it as following:
c("a","b","c","d") and the result is:[1]
"a"
"b" "c" "d".
But I remember there's a shortcut manner to do the same thing,something like
c("a":"d").But the system said:"Error in
"a":"d" : NA/NaN argument" So I
wonder the correct method to do it(I remember the expression is very similar
with
c("a":"d")). Thanks from the bottom of my heart. My best
regards!
______________________________________________
R-help at stat.math.ethz.ch mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide!
http://www.R-project.org/posting-guide.html
Hi, On Wed, 8 Sep 2004, [gb2312] ÃÏÐÀ wrote:> Hello,sir: Here's a little question about R which needs your help.Thanks in advance. > If I wanna make a sequence just like a,b,c,d (In other words,a vector consists of 4 characters :a,b,c,d ).How can I do it in a shortcut manner? Yes,I can do it as following: c("a","b","c","d") and the result is:[1] "a" "b" "c" "d". > But I remember there's a shortcut manner to do the same thing,something likeHow about letters[1:4]>-------------------------------- Ko-Kang Kevin Wang PhD Student Centre for Mathematics and its Applications Building 27, Room 1004 Mathematical Sciences Institute (MSI) Australian National University Canberra, ACT 0200 Australia Homepage: http://wwwmaths.anu.edu.au/~wangk/ Ph (W): +61-2-6125-2431 Ph (H): +61-2-6125-7407 Ph (M): +61-40-451-8301 ______________________________________________ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html [[alternative HTML version deleted]]
letters[1:4] Alec Stephenson Department of Statistics Macquarie University NSW 2109, Australia>>> " $(A????????" <xmeng at capitalbio.com> 09/08/04 10:41am >>>Hello,sir: Here's a little question about R which needs your help.Thanks in advance. If I wanna make a sequence just like a,b,c,d (In other words,a vector consists of 4 characters :a,b,c,d ).How can I do it in a shortcut manner? Yes,I can do it as following: c("a","b","c","d") and the result is:[1] "a" "b" "c" "d". But I remember there's a shortcut manner to do the same thing,something like c("a":"d").But the system said:"Error in "a":"d" : NA/NaN argument" So I wonder the correct method to do it(I remember the expression is very similar with c("a":"d")). Thanks from the bottom of my heart. My best regards! ______________________________________________ R-help at stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html