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pca.py: Add ability to drop columns (questions) from input data
author
W. Trevor King
<wking@tremily.us>
Tue, 19 Mar 2013 13:04:30 +0000
(09:04 -0400)
committer
W. Trevor King
<wking@tremily.us>
Tue, 19 Mar 2013 13:04:30 +0000
(09:04 -0400)
posts/Factor_analysis/pca.py
patch
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diff --git
a/posts/Factor_analysis/pca.py
b/posts/Factor_analysis/pca.py
index 03d1639690e0a6e69acea6e808c65fdeabd797ba..0e8aaaf2795a36ddddb425bae55718caeea11501 100755
(executable)
--- a/
posts/Factor_analysis/pca.py
+++ b/
posts/Factor_analysis/pca.py
@@
-597,6
+597,9
@@
if __name__ == '__main__':
parser.add_argument(
'-u', dest='unitary', default=False, action='store_const', const=True,
help='use unitary eigenvalues for factor loading')
parser.add_argument(
'-u', dest='unitary', default=False, action='store_const', const=True,
help='use unitary eigenvalues for factor loading')
+ parser.add_argument(
+ '-d', dest='drop', type=int, action='append',
+ help='drop a column from the analysis')
parser.add_argument(
'path',
help='path to the tab-delimited data file to analyze')
parser.add_argument(
'path',
help='path to the tab-delimited data file to analyze')
@@
-604,4
+607,6
@@
if __name__ == '__main__':
args = parser.parse_args()
scores = _numpy.genfromtxt(fname=args.path, delimiter='\t')
args = parser.parse_args()
scores = _numpy.genfromtxt(fname=args.path, delimiter='\t')
+ if args.drop:
+ scores = _numpy.delete(scores, args.drop, axis=1)
analyze(scores=scores, output_dim=args.output_dim, unitary=args.unitary)
analyze(scores=scores, output_dim=args.output_dim, unitary=args.unitary)