Simulate real and complex numbers from distributions of their
magnitude and arguments. Optionally, the magnitudes and/or arguments may
be fixed in almost arbitrary ways. Plot density and distribution
functions with automatic selection of suitable regions. Small
programming utilities: check if an object is identical to NA, count
positional arguments in a call, set intersection of more than two sets,
check if an argument is unnamed, compute the graph of S4 classes in
packages.

# Installing gbutils

The latest
stable version is on CRAN.

`install.packages("gbutils")`

You can install the development version of
`gbutils`

from Github:

```
library(devtools)
install_github("GeoBosh/gbutils")
```

# Overview

Package `gbutils`

is a collection of (mostly small)
functions used interactively or in packages.

## Numeric computations

`sim_numbers()`

, `sim_complex()`

,
`sim_real()`

- Simulate real or complex numbers from
(possibly partial) polar form specifications.

`cdf2quantile()`

- Compute quantiles from a given
distribution function.

`pseudoInverse()`

- Compute pseudo-inverse
matrices.

`rpoly()`

- create polynomials with real coefficients
from zeroes (roots) given in Cartesian or polar form.

## Graphics

`plotpdf()`

- Plot functions with automatic determination
of the “interesting” region (typically probability density and
distribution functions)

## S4 classes

`adjacencyOfClasses()`

- Create inheritance graphs of S4
classes defined in one or more packages.

## Programming utilities

`isNA()`

- Is an object NA?

`isargunnamed()`

- Is an element of a list
named?

`missing_arg()`

- Is an element of a pairlist
missing?

`parse_text()`

- Parse expressions.

`nposargs()`

- Count the number of positional
arguments used in a call.

`shiftleft()`

`shiftright()`

- Rotate
vectors.

## Other

`mintersect()`

- Set intersection of arbitrary number
of arguments.

`myouter()`

- Outer product using a non-vectorised
function.

`raw_history()`

Get the command history in a character
vector.