[PLUG] Manipulating Bit Masks in Python

[Rich Shepard]

   Has anyone here manipulated bit-masked data in Python? I'm having
difficulties finding information on how to go about it.

   The Numerical Python (Nympy) doc has a chapter on masked arrays, but these
are not the same thing; they're a mask that indicates which rows/columns have
valid data in an array.

   I'll be getting 2-bytes/row data from the optical mark reader and I need to
test each bit in each byte to know what data are in each row. If you know of
a reference that describes the preferred way to do this, please pass it on to
me.

Rich

-- 
Richard B. Shepard, Ph.D.               |   Author of "Quantifying Environmental
Applied Ecosystem Services, Inc. (TM)   |  Impact Assessments Using Fuzzy Logic"
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