Re:Inputting integer data in binary form

*To*: mathgroup at yoda.physics.unc.edu*Subject*: Re:Inputting integer data in binary form*From*: John Novak <novak>*Date*: Wed, 20 May 1992 08:09:00 -0500

>I'm working on a Sun system with Mathematica 1.2. I need to input >a file of integer data which I have in binary form, two bytes per >integer. Can anyone make any suggestions about how to do this? This one is fairly easy; read it in as bytes, and convert those to integers, as follows: Apply[256 #1 + #2 &, Partition[ReadList["filename",Byte],2],{1}] This should give you a list of integers that were originally two bytes, unsigned. Various modifications can be made to this to handle, say, signed integers, or little-endian storage. >More generally, are there Mathematica functions or packages for >inputting other types of binary files, containing, for example, >four byte integers, four byte floating, eight byte floating, >etc? Coming soon in the next version of Mathematica, there will be a package called Utilities`BinaryFiles`. This defines functions ReadBinary, ReadListBinary, and WriteBinary (amongst others); it will handle all the types you mention. Hope this is useful! --John N. ------------------------------------------------------------------------------- John M. Novak novak at wri.com Wolfram Research, Inc.