[MINC-development] Welcome

[Peter NEELIN]

On Mon, 11 Nov 2002, Robert Vincent wrote:

> Jason and Steve mentioned that huge MINC files work fine today if the
> image is the last data object in the file.  I assume that this is
> because the existing MINC utilities never perform an lseek() within this
> part of the file.  Using a network or virtual file interface would
> probably change this.

To clarify a bit: The 2 GB limitation in NetCDF files arises because the
file format only stores 32-bit offsets to the beginning of a variable.
Larger files can be used if the beginning of the last variable starts
before the 2 GB limit. Thus the image variable must be last (since it is
the largest variable). This will only work if minc and NetCDF are compiled
in an environment that supports 64-bit seeks (NetCDF is seeking to the
beginning of each piece being read in, so it has to be able to seek beyond
2 GB).

            Peter
----
            Peter Neelin (neelin@bic.mni.mcgill.ca)