Speed comparison of Numeric, numarray, numpy

[robert]

just a note - some speed comparisons :

0.36965815487747022

timeit.Timer('x=a[30:40]','import Numeric;a=Numeric.ones(300,Numeric.Float)').timeit(10000) 0.016557970357098384
timeit.Timer('x=a[30:40]','import numarray;a=numarray.ones(300,numarray.Float)').timeit(10000) 0.15692469294117473
timeit.Timer('x=a[30:40]','import numpy;a=numpy.ones(300,numpy.float)').timeit(10000)

0.01951756438393204
0.21168165227754798

timeit.Timer('x=MLab.max(a[30:40])','import Numeric,MLab;a=Numeric.ones(300,Numeric.Float)').timeit(10000) 0.21775784352394112
timeit.Timer('x=a[30:40].max()','import numarray;a=numarray.ones(300,numarray.Float)').timeit(10000) 0.81516337970242603
timeit.Timer('x=a[30:40].max()','import numpy;a=numpy.ones(300,numpy.float)').timeit(10000)

0.21344193186450866

0.16990958347923879


strange differences in all directions ...

robert