How do you find the number of non-zero elements in a Grid Function in Cactus?

-DG

—
David Garrison, Ph.D. 
Faculty Senate President, 
Associate Professor of Physics
University of Houston-Clear Lake 
Bayou 3531
Houston, TX 77058 

Tel: 281-283-3796 
Fax: 281-283-3709 
http://sce.uhcl.edu/garrison 

"If we knew what it was we were doing, it would not be called research, would it?" — Albert Einstein.