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PO
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Id
4827843
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2011-01-28T11:46:53.357
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2018-02-26T14:53:25.453
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2018-02-26T14:53:25.453
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2
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98
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text
Body
Saw this on a twitter post and think it's an awesome function by Dirk! Following on from JD Long's answer, I would do this for user friendly reading: <pre><code># improved list of objects .ls.objects <- function (pos = 1, pattern, order.by, decreasing=FALSE, head=FALSE, n=5) { 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.prettysize <- napply(names, function(x) { format(utils::object.size(x), units = "auto") }) 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.prettysize, obj.dim) names(out) <- c("Type", "Size", "PrettySize", "Length/Rows", "Columns") if (!missing(order.by)) out <- out[order(out[[order.by]], decreasing=decreasing), ] if (head) out <- head(out, n) out } # shorthand lsos <- function(..., n=10) { .ls.objects(..., order.by="Size", decreasing=TRUE, head=TRUE, n=n) } lsos() </code></pre> Which results in something like the following: <pre><code> Type Size PrettySize Length/Rows Columns pca.res PCA 790128 771.6 Kb 7 NA DF data.frame 271040 264.7 Kb 669 50 factor.AgeGender factanal 12888 12.6 Kb 12 NA dates data.frame 9016 8.8 Kb 669 2 sd. numeric 3808 3.7 Kb 51 NA napply function 2256 2.2 Kb NA NA lsos function 1944 1.9 Kb NA NA load loadings 1768 1.7 Kb 12 2 ind.sup integer 448 448 bytes 102 NA x character 96 96 bytes 1 NA </code></pre> NOTE: The main part I added was (again, adapted from JD's answer) : <pre><code>obj.prettysize <- napply(names, function(x) { print(object.size(x), units = "auto") }) </code></pre>
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1. POTricks to manage the available memory in an R session
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1. USMegatron
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1. USTony Breyal
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