Vdgraph: this function makes a Variance Dispersion Graph of a response...

In Vdgraph: Variance Dispersion Graphs and Fraction of Design Space Plots for Response Surface Designs

this function makes a Variance Dispersion Graph of a response surface design

Description

This function calls the function Vardsgr which uses Vining's (1993) fortran code to get the coordinates of a variance dispersion graph, and then makes the plot.

Usage

Vdgraph(des)

Arguments

des	des is a matrix or a data frame containing a response surface design in coded or uncoded units. There should be one column for each factor in the design, and one row for each run in the design. The maximum number of rows allowed is 99, and the maximum number of columns is 7.

Value

vdgpl

vdgpl

This is a graph containing the Variance Dispersion Graph

Note

This function calls the function Vardsgr to get the coordinates for the plot.

Author(s)

John S. Lawson [e-mail]

References

1. Vining, G. "A Computer Program for Generating Variance Dispersion Graphs" Journal of Quality Technology, Vol 25, No. 1, pp. 45-58, 1993. 2. Vining, G. "Corrigenda" Journal of Quality Technology, Vol 25, No. 4, pp 333-335. 1993.

Examples

data(D310)
Vdgraph(D310)

Vdgraph documentation built on Sept. 9, 2023, 1:07 a.m.