An implementation of the radviz projection in R. It enables the visualization of
    multidimensional data while maintaining the relation to the original dimensions.
    This package provides functions to create and plot radviz projections, and a number of summary
    plots that enable comparison and analysis. For reference see Ankerst *et al.* (1996) 
    (<https://citeseer.ist.psu.edu/viewdoc/summary?doi=10.1.1.68.1811>) for original implementation, 
    see Di Caro *et al* (2012) (<https://link.springer.com/chapter/10.1007/978-3-642-13672-6_13>) 
    for the original method for dimensional anchor arrangements, see Demsar *et al.* (2007) 
    (<doi:10.1016/j.jbi.2007.03.010>) for the original Freeviz implementation.

Aims at loading Google Adwords data into R. Adwords is an online
    advertising service that enables advertisers to display advertising copy to web
    users (see <https://developers.google.com/adwords/> for more information). 
    Therefore the package implements three main features. First, the package
    provides an authentication process for R with the Google Adwords API (see 
    <https://developers.google.com/adwords/api/> for more information) via OAUTH2.
    Second, the package offers an interface to apply the Adwords query language in
    R and query the Adwords API with ad-hoc reports. Third, the received data are
    transformed into suitable data formats for further data processing and data
    analysis.

A model of single-layer groundwater flow in steady-state
    under the Dupuit-Forchheimer assumption can be created by placing
    elements such as wells, area-sinks and line-sinks at arbitrary
    locations in the flow field. Output variables include hydraulic head
    and the discharge vector. Particle traces can be computed numerically
    in three dimensions. The underlying theory is described in Haitjema
    (1995) <doi:10.1016/B978-0-12-316550-3.X5000-4> and references
    therein.

A series of shortcuts for routine tasks originally developed by Rafael A. Irizarry to facilitate data exploration.