Hello,
It's better if you send the questions to R-help@r-project.org, the odds
of you getting more and better answers are greater.
As for your questions, see inline.
Em 10-03-2014 23:34, agustin purciariello escreveu:
Good night Rui,
I´m in the mailing list of R help. i recently sent an email to the group
with some rookie questions, but i think i did something wrong because an
automatic email was sent to me saying that it was an error or something
like that.
In the forum i saw you know a lot about the programm and you are very
active in helping, so if it is not too much bother to you, i copy what i
posted and maybe you can help me please.
Thanks a lot!! best regards,
Agustín.
"Good night,
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?
You can write the expression between parenthesis to have the result printed.
(alfa <- X*Y)
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".
Yes, Y <- datos[, 2] creates a vector, but it doesn't have 'dim' attribute
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)?
Instead of dim(Y) can't you use length(Y)?
Hope this helps,
Rui Barradas
Many many thanks and sorry for my english!
Agustín"
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