Hello,
I used some other langages as Matlab and i just began with R, and i need help
with data structure.
Here is my code
"
fct_echant_hist <- function ( my_echant, my_vitesse, my_hist, my_summary) {
list (my_echant = my_echant,
my_vitesse = my_vitesse,
my_hist = my_hist,
my_summary = my_summary)}
my_echant_hist <- replicate(dim(pas)[1], fct_echant_hist(0L,
0L,
matrix(nrow=length(my_breaks),ncol=1),
matrix(nrow=6,ncol=1)),
simplify=FALSE)
"
Is it possible to acces to all data of my_vitesse ?
to acces to the my_vitesse of the first record i write
my_echant_hist[[1]][[2]]
I try something like that without succes :
my_echant_hist[[]][[2]] or
my_echant_hist[[:]][[2]] or
my_echant_hist[[;]][[2]]
Thanks a lot
Eric ./.
P:S Sorry for my English
Read the "Introduction to R tutorial" that is part of your R installation. For more complete information, consult the "R Language Definition" and ?"[" . -- Bert On Tue, Jul 23, 2013 at 4:22 AM, Eric TRAVAGLINI <Eric.TRAVAGLINI at crealp.vs.ch> wrote:> Hello, > > I used some other langages as Matlab and i just began with R, and i need help with data structure. > > Here is my code > > " > fct_echant_hist <- function ( my_echant, my_vitesse, my_hist, my_summary) { > list (my_echant = my_echant, > my_vitesse = my_vitesse, > my_hist = my_hist, > my_summary = my_summary)} > > > my_echant_hist <- replicate(dim(pas)[1], fct_echant_hist(0L, > 0L, > matrix(nrow=length(my_breaks),ncol=1), > matrix(nrow=6,ncol=1)), > simplify=FALSE) > " > Is it possible to acces to all data of my_vitesse ? > > > to acces to the my_vitesse of the first record i write > my_echant_hist[[1]][[2]] > > I try something like that without succes : > my_echant_hist[[]][[2]] or > my_echant_hist[[:]][[2]] or > my_echant_hist[[;]][[2]] > > > Thanks a lot > > Eric ./. > > P:S Sorry for my English > > ______________________________________________ > 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. >-- Bert Gunter Genentech Nonclinical Biostatistics Internal Contact Info: Phone: 467-7374 Website: http://pharmadevelopment.roche.com/index/pdb/pdb-functional-groups/pdb-biostatistics/pdb-ncb-home.htm
On 23-07-2013, at 13:22, "Eric TRAVAGLINI" <Eric.TRAVAGLINI at crealp.vs.ch> wrote:> Hello, > > I used some other langages as Matlab and i just began with R, and i need help with data structure. > > Here is my code > > " > fct_echant_hist <- function ( my_echant, my_vitesse, my_hist, my_summary) { > list (my_echant = my_echant, > my_vitesse = my_vitesse, > my_hist = my_hist, > my_summary = my_summary)} > > > my_echant_hist <- replicate(dim(pas)[1], fct_echant_hist(0L, > 0L, > matrix(nrow=length(my_breaks),ncol=1), > matrix(nrow=6,ncol=1)), > simplify=FALSE) > " > Is it possible to acces to all data of my_vitesse ? > > > to acces to the my_vitesse of the first record i write > my_echant_hist[[1]][[2]] > > I try something like that without succes : > my_echant_hist[[]][[2]] or > my_echant_hist[[:]][[2]] or > my_echant_hist[[;]][[2]] >Have a look in the "An Introduction to R" section 6.1 "Lists". Berend
What you are doing looks like it is probably more complicated than
necessary, but since I have no idea what structure you intend to create,
it is hard to say.
Here is a suggestion:
try this:
str(my_echant_hist)
It will give you a summary of the structure of that object, which should
help you understand how to access its elements.
The expression
my_echant_hist[[1]][[2]]
makes sense if my_enchant_hist is a list, and if its first element is also
a list. Then you're asking for the second element within the first element.
There is nothing in R syntax that I know of that gives meaning to any of
these
my_echant_hist[[]]
my_echant_hist[[:]]
my_echant_hist[[;]]
so I don't know what you were trying to get.
I do suggest studying documentation for syntax related to using '['.
Type
?'['
or
help('[')
-Don
--
Don MacQueen
Lawrence Livermore National Laboratory
7000 East Ave., L-627
Livermore, CA 94550
925-423-1062
On 7/23/13 4:22 AM, "Eric TRAVAGLINI" <Eric.TRAVAGLINI at
crealp.vs.ch> wrote:
>Hello,
>
>I used some other langages as Matlab and i just began with R, and i need
>help with data structure.
>
>Here is my code
>
>"
>fct_echant_hist <- function ( my_echant, my_vitesse, my_hist, my_summary)
>{
> list (my_echant = my_echant,
> my_vitesse = my_vitesse,
> my_hist = my_hist,
> my_summary = my_summary)}
>
>
>my_echant_hist <- replicate(dim(pas)[1], fct_echant_hist(0L,
> 0L,
> matrix(nrow=length(my_breaks),ncol=1),
> matrix(nrow=6,ncol=1)),
> simplify=FALSE)
>"
>Is it possible to acces to all data of my_vitesse ?
>
>
>to acces to the my_vitesse of the first record i write
>my_echant_hist[[1]][[2]]
>
>I try something like that without succes :
>my_echant_hist[[]][[2]] or
>my_echant_hist[[:]][[2]] or
>my_echant_hist[[;]][[2]]
>
>
>Thanks a lot
>
>Eric ./.
>
>P:S Sorry for my English