Nrows {mixexp}

Loads compiled fortran in shared file cnvrt and returns the number of rows in the resulting design

Description

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

Usage

 
Nrows(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

nvrtr

nvrtr

This is the number of rows in rxvt the matrix of extreme vertices and centroids

Note

This function is called by the function crtave.

Author(s)

John S. Lawson [e-mail]

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.