jeg wrote: > dear all, > > i'm an astronomer working with 2d images -- 2d numarrays. i have a > script which basically does some operations on some images, and one of > the first steps is to find a galaxy on an image (at, say, a known x,y > coord), and create a sub-image by slicing out part of the larger array > to create a more managable smaller one (e.g. 50x50 pixels from a > 1000x1000 array). > > i was running this fine under python 2.3.4, but due to the slowness of > my machine, moved to a speedy 64-bit linux box running version 2.4.2. > arrays were no longer being sliced in the correct way, for example: > > B = A[3:7,6:10] > > generates different Bs if i run an identical script on the same image > on the different machines. > > note: we deal with FITS format images, which are read into numarrays > using the pyfits.py module. does anyone know any obvious reason this > should be happening?
Not without having the data and the machines in front of me. You'll get better luck asking on numarray's mailing list. -- Robert Kern [EMAIL PROTECTED] "In the fields of hell where the grass grows high Are the graves of dreams allowed to die." -- Richard Harter -- http://mail.python.org/mailman/listinfo/python-list
