Eflags: Loads compiled fortran in shared file cnvrt and returns the...

Description Usage Arguments Value Note Author(s) References

View source: R/Eflags.R

Description

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

Usage

1
2
 
Eflags(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

ifa

This is the vector of error flags. A negative value for flag 1 indicates that there are inconsistent constraints. A negative value for flag2 indicates there are two many vertices and centroids, this program only works when # vertices + # centroids <=1000. A negative value for flag 3 indicates an error encountered when calling subroutine allnr.

Note

This function is called by the function crtave.

Author(s)

John S. Lawson [email protected]

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.


mixexp documentation built on May 29, 2017, 7:09 p.m.