Creates mirror-symmetry related output image/volume
from input image/volume. The mirror axis lies at -- row
number: NY/2+1, column: NX/2+1, or slice: NZ/2+1.
Example.
USAGE
.OPERATION: MR
.INPUT FILE: PIC001
[Enter name of file to be mirrored.]
.OUTPUT FILE: MIR001
[Enter name of file for mirrored image.]
If file contains an image, SPIDER asks:
.MIRROR X OR Y AXIS (DEFAULT=Y): Y
[Enter the mirror axis.
X = interchange rows (top / bottom),
Y = interchange columns (left / right).']
If file contains a volume, SPIDER asks:
.MIRROR X, Y, OR Z AXIS (DEFAULT=Y): Y
[Enter the mirror axis.
X = interchange rows (top / bottom),
Y = interchange columns (left / right),
Z = interchange slices (front / back).]
NOTES
If you mirror around an even length axis then you will NOT
get the same results that you expect from using
Photoshop or most other imaging packages due to the
difference in placement of the axis in SPIDER.
E.g. when mirroring an even row length image using SPIDER,
the first column's value is unchanged and the last column's
value is taken from the original 2nd column. This is
consistent with the image center defined in 'RT' and other
SPIDER operations.