Gents: (alas, I think no ladies need to be included in the salutation) The apply() Help file says "... If the calls to FUN return vectors of different lengths, apply returns a list of length dim(X)[MARGIN]. "
Shouldn't that be: "If the calls to FUN return vectors of different lengths, apply returns a list of length prod(dim(X)[MARGIN]). " Also, might you wish to add: "This list has a dim attribute of MARGIN. That is, if VALUE is the returned list, dim(VALUE) = MARGIN and the values in VALUE can be accessed by the usual array subscripting operations." Further, it might also be useful to add the following to your Examples code: ## Example with different lengths for each call z <- array(1:24,dim=2:4) zseq <- apply(z,1:2,function(x)seq(length=max(x))) zseq ## displayed as a 2 x 3 matrix typeof(zseq) ## list dim(zseq) ## 2 3 zseq[1,] Feel free to ignore these suggestions, of course. Cheers, -- Bert Gunter Genentech Non-Clinical Statistics South San Francisco, CA ______________________________________________ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel
