Eflags | R Documentation |
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.
Eflags(ndm,nvrr,ncon2,rtheta2)
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. |
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. |
This function is called by the function crtave.
John S. Lawson lawson@byu.edu
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.
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