Good morning,
i'm new in R and i have two questions, i hope someone could help me please:
1) For example if i put alfa<-X*Y, is there any way that when i put "run
line on selection" (or ctrl+R) the result
appears without having to write again "alfa" and then again "run
line on
selection" to see the result?
2) When i select a column vector, for example Y<-datos[,2] ("datos"
is in
spanish, it means "data"), R doesnt
recognize that column as a vector; if i put dim(Y) it says "null".
What i do
is to transplant the variable twice and put Y<-t(t(Y)), and then R recognize
the column as a vector. Is there a way to make R recognize the vectors as
vector in a first place (and avoid to do what i do)?
Many many thanks and sorry for my english!
AgustÃn
[[alternative HTML version deleted]]
Your English isn't the problem. It's your failure to do your homework first: Please read "An Introduction to R," the tutorial that ships with R, or one of the many tutorials on the web (including in your native language, very likely), so search. Here also is another possible resource: http://cran.r-project.org/other-docs.html Cheers, Bert Bert Gunter Genentech Nonclinical Biostatistics (650) 467-7374 "Data is not information. Information is not knowledge. And knowledge is certainly not wisdom." H. Gilbert Welch On Tue, Mar 11, 2014 at 8:41 AM, agustin purciariello <apurciariello at hotmail.com> wrote:> > > > Good morning, > > i'm new in R and i have two questions, i hope someone could help me please: > > 1) For example if i put alfa<-X*Y, is there any way that when i put "run > line on selection" (or ctrl+R) the result > appears without having to write again "alfa" and then again "run line on > selection" to see the result? > > 2) When i select a column vector, for example Y<-datos[,2] ("datos" is in > spanish, it means "data"), R doesnt > recognize that column as a vector; if i put dim(Y) it says "null". What i do > is to transplant the variable twice and put Y<-t(t(Y)), and then R recognize > the column as a vector. Is there a way to make R recognize the vectors as > vector in a first place (and avoid to do what i do)? > > Many many thanks and sorry for my english! > Agust?n > > [[alternative HTML version deleted]] > > > ______________________________________________ > R-help at 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. >
1. (alfa <- X*Y) # Sends the result of the expression to
print()
2. Y <- datos[,2, drop=FALSE] # see the bracket manual page:
?"["
-------------------------------------
David L Carlson
Department of Anthropology
Texas A&M University
College Station, TX 77840-4352
-----Original Message-----
From: r-help-bounces at r-project.org
[mailto:r-help-bounces at r-project.org] On Behalf Of agustin
purciariello
Sent: Tuesday, March 11, 2014 10:42 AM
To: r-help at r-project.org
Subject: [R] novice questions
Good morning,
i'm new in R and i have two questions, i hope someone could help
me please:
1) For example if i put alfa<-X*Y, is there any way that when i
put "run
line on selection" (or ctrl+R) the result
appears without having to write again "alfa" and then again "run
line on
selection" to see the result?
2) When i select a column vector, for example Y<-datos[,2]
("datos" is in
spanish, it means "data"), R doesnt
recognize that column as a vector; if i put dim(Y) it says
"null". What i do
is to transplant the variable twice and put Y<-t(t(Y)), and then
R recognize
the column as a vector. Is there a way to make R recognize the
vectors as
vector in a first place (and avoid to do what i do)?
Many many thanks and sorry for my english!
Agustmn
[[alternative HTML version deleted]]