Question About "Calculate Black to White Ratio.txt"

[Tiffy Zachos]

Can the "Calculate Black to White Ratio.txt" macro be used with
the "freehand selections" tool to calculate the black to white ratio
within a selected area, or does this macro always only calculate the black
to white ratio for the entire image?

Thank you.

Regards,

Tiffy Zachos

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Terri A. Zachos, DVM
Diplomate, American College of Veterinary Surgeons
Comparative Orthopedic Molecular Medicine and
   Applied Reserach Laboratories
The Ohio State University
601 Tharp Street
Columbus, OH 43210
Phone: [phone]
Fax: [phone]
Laboratory: [phone]
http://www.vet.ohio-state.edu/432.htm 
http://myprofile.cos.com/Zachos02