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Dear All, There are NMR file formats out there that use compression. Utrechts University hoemmade program uses one, for instance. It would be a fair bit of work to integrate that and write / get the data conversion routines, though. Yours, Rasmus --------------------------------------------------------------------------- Dr. Rasmus H. Fogh Email: [log in to unmask] Dept. of Biochemistry, University of Cambridge, 80 Tennis Court Road, Cambridge CB2 1GA, UK. FAX (01223)766002 On Wed, 17 Feb 2010, Daniel O'Donovan wrote: > On 17 Feb 2010, at 17:25, Justin Lecher wrote: > >>> It's inconvenient, but I don't think that there will be an easy way to handle 2 GB files in 32 bit machines. >> >> I never used but I know that there are a couple of archive programs like >> 7zip which have LFS. > > > I'm currently playing about with some large 4D experiments (although only 835MB max) and performance can be quite bad at times (I have a 64 bit machine and 4GB of RAM). We're trying to think of a smart way to handle large data sets - Wayne uses 'Contour Files' currently. A clever way to compress the spectra in memory, or to filter and store only the useful bits would be great. If you have any ideas, do let us know! > > Dan > > Daniel O'Donovan > [log in to unmask] > > > >