On Wed, Sep 17, 2003 at 05:41:09PM -0700, Spencer Graves wrote: > A subset of a data.frame is still a data.frame. A data.frame is > actually a list with additional attributes. As far as I know, your > solution, "as.matrix", is an appropriate tool to convert a data.frame to > a matrix. Caution may be appropropriate, however, because if the
That helps explain where the list assignment is coming from, but it still seems very odd that assignment to a subset of a matrix should change the class of the object, so that it is no longer a matrix. ______________________________________________ [EMAIL PROTECTED] mailing list https://www.stat.math.ethz.ch/mailman/listinfo/r-help
