Hi Rui,
If I don't transpose t() the output of the replicate (my R code here below) I
still get an error message !!
########################################
a=c(2,4,3,4,6,5,3,1,2,3,4,3,4,5,65)
b=c(23,45,32,12,23,43,56,44,33,11,12,54,23,34,54)
d=c(9,4,5,3,2,1,3,4,5,6,4,9,10,11,18)
my.experiment <- function() {
OLS <- lm( a ~ b+d )
MSE_OLS<-mean(OLS$residuals^2)
return( c(MSE_OLS) )
}
my.data = replicate( 500, my.experiment() )
colnames(my.data) <- c("MSE_OLS")
mean(my.data)
########################################
Le mardi 19 mai 2020 à 23:14:21 UTC+2, Rui Barradas <ruipbarra...@sapo.pt> a
écrit :
Hello,
Inline.
Às 21:38 de 19/05/20, varin sacha via R-help escreveu:
>
> Hi Richard,
>
> Thanks for your response.
> However, how can I correct my R code knowing that I want, as a result, only
> one value : the mean of the 500 MSE_OLS values ?
Just don't transpose the output of replicate?
Hope this helps,
Rui Barradas
>
>
>
>
>
>
>
> Le mardi 19 mai 2020 à 21:59:07 UTC+2, Richard M. Heiberger <r...@temple.edu>
> a écrit :
>
>
>
>
>
>> dim(my.data)
> [1] 1 500
>
> you have a matrix with a single row and 500 columns.
> you gave a name to only the first column.
>
> Look at the result of replicate(). it is a vector. You transposed it into a
> one-row matrix.
>
>> tmp <- replicate( 500, my.experiment() )
>> dim(tmp)
> NULL
>> length(tmp)
> [1] 500
>> dim(t(tmp))
> [1] 1 500
>
>
> On Tue, May 19, 2020 at 3:51 PM varin sacha via R-help <r-help@r-project.org>
> wrote:
>> Dear R-experts,
>>
>> Here is my R code, I get a result but I also get an error message so I doubt
>> I can trust the result I get.
>> What is going wrong ? Many thanks.
>>
>> ########################################
>> a<-c(2,4,3,4,6,5,3,1,2,3,4,3,4,5,65)
>> b<-c(23,45,32,12,23,43,56,44,33,11,12,54,23,34,54)
>> d<-c(9,4,5,3,2,1,3,4,5,6,4,9,10,11,18)
>>
>> my.experiment <- function( ) {
>>
>> OLS <- lm( a ~ b+d )
>> MSE_OLS<-mean(OLS$residuals^2)
>> return( c(MSE_OLS) )
>> }
>>
>> my.data = t(replicate( 500, my.experiment() ))
>> colnames(my.data) <- c("MSE_OLS")
>> mean(my.data)
>> ########################################
>>
>>
>> ______________________________________________
>> R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see
>> 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.
>>
>
> ______________________________________________
> R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see
> 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.
>
______________________________________________
R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see
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.
