NAME
pca.py
DESCRIPTION
calculates best-fit line/plane through demagnetization data
INPUT FORMAT
takes specimen_name treatment intensity declination inclination in space delimited file
SYNTAX
pca.py [-h][-i] [command line options][< filename]
OPTIONS
-h prints help and quits
-i for interactive filename, calculation type, bounds entry
-f FILE
-dir [L,P,F][BEG][END] specify direction type, beginning and end
(L:line, P:plane or F:fisher mean of unit vectors)
BEG: first step (NRM = step zero)
END: last step (NRM = step zero)
< filename for reading from standard input
OUTPUT:
specimen_name calculation_type N beg end MAD dec inc
if calculation_type is 'p', dec and inc are pole to plane, otherwise, best-fit direction
EXAMPLE:
pca.py -l 1 5 <ex5.1
will calculate best-fit line through demagnetization steps 1 and 5 from file ex5.1
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