On 21 April 2010 15:41, Matthew Turk <matthewt...@gmail.com> wrote: > Hi there, > > I've quite a bit of unformatted fortran data that I'd like to use as > input to a memmap, as sort of a staging area for selection of > subregions to be loaded into RAM. Unfortunately, what I'm running > into is that the data was output as a set of "slices" through a 3D > cube, instead of a single 3D cube -- the end result being that each > slice also contains a record delimiter. I was wondering if there's a > way to either specify that every traversal through the least-frequent > dimension requires an additional offset or to calculate individual > offsets for each slice myself and then aggregate these into a "super > memmap."
If you had a delimiter for each entry in a record array you could just make a dummy record field for the delimiter, but it sounds like you have one delimiter per slice instead. I think the way to go is to memmap it in as a flat uint8 array and then construct a view into that array with appropriate strides (which includes skipping the delimiter). This may well be what you meant by a "super memmap". > Thanks for any suggestions you might have! Good luck, Anne > -Matt > _______________________________________________ > NumPy-Discussion mailing list > NumPy-Discussion@scipy.org > http://mail.scipy.org/mailman/listinfo/numpy-discussion > _______________________________________________ NumPy-Discussion mailing list NumPy-Discussion@scipy.org http://mail.scipy.org/mailman/listinfo/numpy-discussion
