.INPUT1 FILE: ACF001
[Enter name of the file containing the ACF of the first
picture, 64x64 or 128x128.]
.INPUT2 FILE: ACF002
[Enter the name of the file containing the ACF of second
picture; dimensions must correspond to those of the first
picture.]
.NO. OF RINGS, WEIGHT OVERRIDE(1/0): 5,0
[Enter number of ring segments to be used for orientation
search, and enter '1' if the default weights and radii are
to be overridden (see notes).]
.GRAPH FOR EACH RING? (Y/N): YA
[Indicate if a plot of the CCF in the RESULTS file for each
ring is desired.]
.ENTER WEIGHTS: 0.1,0.2,0.5,1.0,0.1
[Enter a weighting factor (as floating point values)
for each ring (10 per line).]
[SPIDER computes the cross-correlation of equispaced data along concentric circles around the centers of the ACFs; the resulting one-dimensional cross-correlation functions are weighted and added together. The orientation graph (between -180 and +180 degrees) is printed to the RESULTS file, with the position of the highest peak indicating the angle where optimum match occurs. The position and accuracy of the peak are also printed. If option ".GRAPH FOR EACH RING?(Y/N):" is chosen, the CCF of each ring before weighting is printed out (use this option for tests only,
because one page is used for each ring in the printout). In addition, the rotation angle will be put into the temporary register if an output parameter X10 is specified. This can be used as input to a subsequent RT operation.]
NOTES