Hi, I run into the following problem:
> data(iris) > as.array(iris[,-5]) Error in "dimnames<-.data.frame"(`*tmp*`, value = list(c("Sepal.Length", : invalid dimnames given for data frame > as.array(as.matrix(iris[,-5])) When trying to convert numeric data frame to an array. Conversion to matrix works just fine, but array crashes. Since documentation for "as.array" says its argument has to be "an R object" than it should work for data frames as well. Closer examination shows that "as.array" code with [150 x 4] data frame as input, does the following: # line of code effect 1 if (is.array(x)) return(x) is.array is false 2 n <- names(x) "names" return a vector of 4 column names 3 dim(x) <- length(x) dim(x) before is [150 x 4]; length(x) is 4; dim(x) after is still [150 x 4] 4 if (length(n)) dimnames(x)<-list(n) list(n) is a list containing 1 vector with 4 strings; attempt to set it as dimnames to [150x4] object fails 5 return(x) If this is a bug and not poorly documented feature, than changing line 2 to "n <- dimnames(x)" seem to work for this example. Jarek =====================================\==== Jarek Tuszynski, PhD. o / \ Science Applications International Corporation <\__,| (703) 676-4192 "> \ [EMAIL PROTECTED] ` \ [[alternative HTML version deleted]] ______________________________________________ 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