This program will change the directory of the reslice target in the designated
while leaving the actual file name unchanged. This utility is designed to allow you easily
update .air files in the event that you choose to move your original data to some new
- where the following definitions apply:
- the name of the .air file
- the name of the directory that now contains the reslice file specified in
the .air file. (scanair can be used to identify the
name of the reslice file specified in a given .air file).
- the path
separator used to separate directories from files on a foreign
computer platform that uses a different separator from the local platform.
For example, PC's use a backslash '\' whereas Unix systems use a forward slash
'/' to separate directories and files. Thus when moving .air files from a PC
to a UNIX system, a foreign path separator of '\' must be specified. As an
additional complication, backslashes are escape characters on UNIX systems, so
a double backslash must be used '\\' so that the first backslash escapes the
cd_air mri.air /data/experiment1/
- The reslice file in mri.air will now target the same file name as it did before,
but the directory in which the file is presumed located is changed to /data/experiment1/
- This example is UNIX specific, since it uses UNIX style paths
- The standard file is not updated, so if you subsequently use
invert_air, you will need to use this program again on the
inverted .air file (assuming that the standard file was moved as well).
- As a safety measure, the name of the old reslice directory is stored in the .air
file comment line where it can be accessed using scanair.
Note that a second application of this program will lose the original reslice directory
- Move the reslice file before you update the .air file if possible. This will allow
the program to verify the dimensions and sizes of the reslice file and warn you if the
file in the directory that you have designated has the same name but is not compatible.
- If compiled to allow automatic detection and application of byte swapping, AIR can
use .air files from bigendian or littleendian machines interchangeably so long as both
platforms conform to the IEEE Standard for Binary Floating-Point Arithmetic
(ISO/IEEE Std 754-1985) and represent relevant variables with the same total number of
bytes. The foreign-path-separator optional argument further
supports cross platform migration of .air files
Modified: December 16, 2001
© 2001 Roger P. Woods, M.D.(firstname.lastname@example.org)