Variance Dispersion Graphs and Fraction of Design Space Plots

Facilities for constructing variance dispersion graphs, fraction- of-design-space plots and similar graphics for exploring the properties of experimental designs. The design region is explored via random sampling, which allows for more flexibility than traditional variance dispersion graphs. A formula interface is leveraged to provide access to complex model formulae. Graphics can be constructed simultaneously for multiple experimental designs and/or multiple model formulae. Instead of using pointwise optimization to find the minimum and maximum scaled prediction variance curves, which can be inaccurate and time consuming, this package uses quantile regression as an alternative.


News

Reference manual

It appears you don't have a PDF plugin for this browser. You can click here to download the reference manual.

install.packages("vdg")

1.2.0 by Pieter Schoonees, a year ago


Browse source code at https://github.com/cran/vdg


Authors: Pieter Schoonees [aut, cre, cph], Niel le Roux [ctb]


Documentation:   PDF Manual  


Task views: Design of Experiments (DoE) & Analysis of Experimental Data


GPL (>= 2) license


Imports proxy, splines, gridExtra, grDevices, methods, stats, utils

Depends on parallel, ggplot2, quantreg

Suggests rsm, Vdgraph, AlgDesign, knitr, lhs


See at CRAN