From: Kristel Joossens <kristel.joossens_at_econ.kuleuven.ac.be>

Date: Mon 05 Dec 2005 - 04:39:35 EST

[[1]]

[1] 1

Date: Mon 05 Dec 2005 - 04:39:35 EST

I think I know what you would like to have.

Sometyhing you can do

R> res<-vector("list",5) R> for (i in 1:5) R> {... R> res[[i]]=my_code(i) R> }

As an easy example:

R> res<-vector("list",5) R> for (i in 1:5){res[[i]]=1:i} R> ex

[[1]]

[1] 1

[[2]]

[1] 1 2

[[3]]

[1] 1 2 3

[[4]]

[1] 1 2 3 4

[[5]]

[1] 1 2 3 4 5

Best regards,

Kristel

-- __________________________________________ Kristel Joossens Ph.D. Student Research Center ORSTAT K.U. Leuven Naamsestraat 69 Tel: +32 16 326929 3000 Leuven, Belgium Fax: +32 16 326732 E-mail: Kristel.Joossens@econ.kuleuven.be http://www.econ.kuleuven.be/public/ndbae49 Serguei Kaniovski wrote:Received on Mon Dec 05 05:24:54 2005

> Hi, thanks for your reply. What I have is a large chunk of code> "my_code" that is controlled by a single FOR-loop. The code computes a> single value my_code(i) depending on the loop counter i. What I would> like to do is to organize the input and the output into a table so that> it can be e.g. plotted, for example in this format>> input_i i=1 i=2 i=3 ....> my_code(1) my_code(2) my_code(3)> ...>> where my_code(1) is the output of a single iteration, itself a column> vector of variable size N(i)>> Serguei>

> Kristel Joossens schrieb:

>

>> Serguei Kaniovski wrote: >> >>> Say I have a FOR-loop for computing powers (just a trivial example) >>> for(i in 1:5) >>> { >>> x<-i^2 >>> y<-i^3 >>> } >>> >>> How can I create a data.frame and a 3D plot of (i,x(i),y(i)), i.e. >>> for each iteration >> >> >> >> First of all you can easily avoid for-loops in such examples. >> You can better work with matrices, so just do >> R> i <- 1:5 >> R> x <- i^2 >> R> y <- i^3 >> >> Second, maybe very interesting, if you want to look somethimg up and >> do not know the R-command. You can always try with RSiteSearch("..."). >> >> I'm not sure what you mean with ``construct a data.frame in a for >> loop''. As far as I know you can better first do the loop and >> construct at the end the data.frame. Anyway, to create a data.frame, >> you can e.g. do >> R> resdf <- as.data.frame(cbind(i,x,y)) >> >> To create 3D-plot there are seeral possibilities. >> Try ?persp (for surfaces) >> or you can download the scatterplot3d package available on CRAN (for >> points and lines). >> >> Hopefully this helps, >> Good luck, >> Kristel Disclaimer: http://www.kuleuven.be/cwis/email_disclaimer.htm ______________________________________________ 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

*
This archive was generated by hypermail 2.1.8
: Mon 05 Dec 2005 - 09:25:00 EST
*