invert_air

• purpose
• usage
• examples
• comments
• error messages
• see also

Purpose:

This program will take a .air file for reslicing file A to match file B and convert it to a .air file for reslicing file B to match file A.

Usage:

invert_air input output [overwrite?(y/n)]

where the following definitions apply:

input

the name of the .air file to be inverted

output

the name of the new .air file to be created

overwrite?(y/n)

the letter 'y' if you want to allow a preexisting file with the nameoutput to be overwritten

Examples:

invert_air A.airB B.airA

Comments:

• The program simply inverts the registration matrix, so this is much faster than having to rederive the inverse transformation by using one of the alignment programs
• Matrix inversion round-off errors will gradually accumulate if you invert repeatedly. One or two inversions should not generate any significant error.

Error messages: (alphabetical)

See also: Generic error messages

Inversion failed

• Subroutine xyz() failed to invert the matrix.
• This is bad news. Consult with a C programmer to find and fix the error.

See also:

• combine_air