SPIDER: RT B (RoTate - image or volume, supply Background, bilinear interpolation)

RT B - RoTate - image or volume, supply Background, bilinear interpolation

(3/11/96)

PURPOSE: Rotates an image or slices from a volume counter-clockwise around the center (NX/2 + 1, NY/2 + 1), Negative angles are rotated clockwise. The background rotated into the image field is specified.
OBSOLETE! USE 'ROT' INSTEAD! Example.

SEE ALSO

ROT	[ROTate image/volume around center by specified angle(s)]
RT 90	[RoTate - image or volume, by 90, 180, or 270 degrees]
RT SQ	[Rotate and Shift - image, Quadratic interpolation \|\|]
RT SF	[Rotate and Shift - image, Fourier based spline interpolation \|\|]

USAGE

.OPERATION: RT B

.INPUT FILE: PIC001
[Enter the name of the file to be rotated.]

.OUTPUT FILE: IMG045
[Enter the name of the file where the rotated image is to be kept.]

.ROTATION ANGLE: 90.0
[Enter the rotation angle in degrees.]

[PIC001 will then be rotated 90 degrees, and the rotated image put in IMG045.]

.BACKGROUND VALUE: 1.2
[Enter the desired background constant to be used.]

NOTES

The input file may be three-dimensional. In this case, each of the slices is separately rotated around the z-axis, and stored in the output file which will be created with the same dimensions.