R/manageVars.R

In kevinmcc21/merf:

library(gmapR)
.ls.objects <- function (pos = 1, envir=NULL, pattern, order.by,
                         decreasing=FALSE, head=FALSE, n=5) {
  if(!is.null(envir)) {
    napply <- function(names, fn) sapply(names, function(x)
      fn(get(x, envir = envir)))
    names <- ls(envir = envir, pattern = pattern)
  }
  else {
    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]], decreasing=decreasing), ]
  if (head)
    out <- head(out, n)
  out
}

lsos <- function(..., n=10) {
  .ls.objects(..., order.by="Size", decreasing=TRUE, head=TRUE, n=n)
}

showAllEnv <- function() {
  ls(envir=.GlobalEnv)[sapply(ls(envir=.GlobalEnv),function(X) "environment" %in% class(get(X)))]
}

globalSnapshot <- function() {
  x <- lapply(showAllEnv(),function(E) {head(lsos(envir=eval(as.name(E))))})
  names(x) <- showAllEnv()
  return(x)
}