I like your ls.obj function - how might I turn it into a standard function for me whenever I launch R?
-----Original Message----- From: David Hinds [mailto:[EMAIL PROTECTED]] Sent: 17 January 2003 20:58 To: [EMAIL PROTECTED] Subject: [R] Re: check variables: a Q from a beginner I played around a bit with the ls.objects() code posted by Petr Pikal yesterday and came up with the following that is a bit faster, shorter, and adds memory usage information. It combines an object's mode and class information into a "Type" column that seems more parsimonious, and adds an argument for specifying a sort column. -- Dave Hinds ls.obj <- function (pos = 1, pattern, order.by) { napply <- function(names, fn) sapply(names, function(x) fn(get(x, pos = pos))) names <- ls(pos = pos, pattern = pattern) obj.class <- napply(names, function(x) as.character(class(x))[1]) obj.mode <- napply(names, mode) obj.type <- ifelse(is.na(obj.class),obj.mode,obj.class) obj.size <- napply(names, object.size) obj.dim <- t(napply(names, function(x) as.numeric(dim(x))[1:2])) vec <- is.na(obj.dim)[,1] & (obj.type != 'function') obj.dim[vec,1] <- napply(names, length)[vec] out <- data.frame(obj.type,obj.size,obj.dim) names(out) <- c("Type","Size","Rows","Columns") if (!missing(order.by)) out <- out[order(out[[order.by]]),] out } > ls.obj(o=2) Type Size Rows Columns db numeric 36 1 NA A character 100 6 NA U character 100 6 NA fetch function 2924 NA NA ls.obj function 9848 NA NA get.snp.data function 15692 NA NA hap.fit function 16124 NA NA get.hap.info function 22476 NA NA bb data.frame 32676 534 7 snp.data data.frame 621936 3873 20 hap.data list 1426080 571 NA s list 1901952 566 NA ______________________________________________ [EMAIL PROTECTED] mailing list http://www.stat.math.ethz.ch/mailman/listinfo/r-help ________________________________________________________________________ This email has been scanned for all viruses by the MessageLabs SkyScan service. For more information on a proactive anti-virus service working around the clock, around the globe, visit http://www.messagelabs.com ______________________________________________ [EMAIL PROTECTED] mailing list http://www.stat.math.ethz.ch/mailman/listinfo/r-help
