Loads compiled fortran in shared file cnvrt

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Description

This function loads and runs the compiled fortran code cnvrt. cnvrt is Piepel's 1988 JQT fortran code for extreme vertices designs.

Usage

1
2
 
Vertcen(ndm,nvrr,ncon2,rtheta2) 

Arguments

ndm

This is the order of centroids desired (0=none, 1=edge centroids, 2=face centroids etc.)

nvrr

This is the number of mixture variables ( maximum is 12)

ncon2

This is the number of constraints (maximum is 45)

rtheta2

This is the constraint matrix stored as a vector of columns.

Value

rxvt

This is the matrix of vertices and centroids stored as a vector of columns.

Note

This function is called by the function crtave.

Author(s)

John S. Lawson lawson@byu.edu

References

1. Piepel, G. F. "Programs for Generating Extreme Vertices and Centroids of Linearly Consrtained Experimental Regions" Journal of Quality Technology, Vol 20, No. 2, pp. 125-139, 1988.