Hi, I use an old version of R (5.02). The reason I do not use the package boot on the last version of R, is the clash of the package itself with expressions contained in other packages, i.e. the"sm " library. I don't know if you have the same problem.
Thank you! Chiara "Roger D. Peng" wrote: > > The help page for `bootstrap' says that to bootstrap more complex > statistics (it gives an example for the correlation), you need to > bootstrap the (row) indices of the data frame and not the data frame > itself. By the way, you appear to have the order of the arguments to > bootstrap() incorrect but I guess this is a typo? > > In general, I would suggest using the `boot' package from CRAN (along > with the Davison & Hinckley book) instead of the `bootstrap' package. > `boot' can work neatly on more general data structures and also uses the > trick of bootstrapping the indices of the data rather than the data > themselves. > > Also, it appears you are using an old version of R because the the "_" > operator is deprecated in the current version (1.7.0). > > -roger > > cp133 wrote: > > Dear All, > > > > When bootstrapping a statistics based on more than one vector, from a > > data.frame or a matrix object, it looks like I am not able to pass the > > data to R. What am I doing wrong? > > I use the library "bootstrap". > > Here is an example with a data.frame called "data" > > > > > > "boot2_bootstrap(data, theta, nboot) > > > > I get the following error message: > > > > Error in inherits(x, "data.frame") : Argument "xdata" is missing, with > > no default" > > > > > > Please note that the same is happening when I create a matrix from the > > data.frame with the function cbind > > (i.e. > > names(data) > > [1] "shortrate" "y1" "y5" "y10" "y15" > > "y20" > > [7] "y25" > > xdata_cbind(data$y10,data$shortrate) > > is.matrix(x.data) > > TRUE) > > > > Thanks in advance, > > > > Chiara > > > > ______________________________________________ > > [EMAIL PROTECTED] mailing list > > https://www.stat.math.ethz.ch/mailman/listinfo/r-help > > > > ______________________________________________ [EMAIL PROTECTED] mailing list https://www.stat.math.ethz.ch/mailman/listinfo/r-help
