Functions to manage and explore the workspace

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Description

These functions help you to find out what has gone wrong and to start afresh if needed.

Usage

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lls(pos = 1, pat = "", all=FALSE, print=TRUE )
clear()

Arguments

pos

Numeric. What position in the search path do you want listed.

pat

Character. List only objects that have this string in their name.

all

Logical. Should invisible objects be printed too - see ls to which this argument is passed.

print

Logical. Should the result be printed?

Details

lls is designed to give a quick overview of the name, mode, class and dimension of the object in your workspace. They may not always be what you think they are.

clear clears all your objects from workspace, and all attached objects too — it only leaves the loaded packages in the search path; thus allowing a fresh start without closing and restarting R.

Value

lls returns a data frame with four character variables: codename, codemode, codeclass and codesize and one row per object in the workspace (if pos=1). size is either the length or the dimension of the object. The data frame is by default printed with left-justified columns.

Author(s)

lls: Unknown. Modified by Bendix Carstensen from a long forgotten snatch.

clear: Michael Hills / David Clayton.

Examples

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x <- 1:10
y <- rbinom(10, 1, 0.5)
m1 <- glm( y ~ x, family=binomial )
M <- matrix( 1:20, 4, 5 )
.M <- M
dfr <- data.frame(x,y)
attach( dfr )
lls()
search()
clear()
search()
lls()
lls(all=TRUE)

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