Rotrev
Merging
These are all switches allowing to manipulate the Amps and Phases.
Rotate +90deg about z? [rot90]
Switch, deciding if data should be rotated by 90 deg about z. That means H=-K, K=H.
Rotate +180deg about z? [rot180]
Switch, deciding if data should be rotated by 180 deg about z. That means H=-H, K=-K.
Revert H and K data? [revhk]
Switch, deciding if data for H and K should be exchanged. That means H=K, K=H, Z=-Z. This would apply if the crystal was upside down on the carbon film.
Flip around A axis (SGNXCH, useful in P121) [sgnxch]
Switch, deciding if data should be flipped around the A axis. That means K=-K, Z=-Z.
Revert handedness? (Don't touch! You'll screw the handedness up.). [revhnd]
Switch, deciding if handednes should be inverted. That means Z=-Z. If you scanned your data correctly, you should never have to used this.
Revert sign of X-axis? (revxsgn: Don't touch! You'll screw the handedness up.). [revxsgn]
Switch, deciding if the H idex for the data should be inverted. That means H=-H. If you scanned your data correctly, you should never have to used this.
These switches are helpful during merging, if images should be merged of tilted crystals that were sometimes adsorbed onto the carbon film in the “up” orientation, and sometimes in the “down” orientation (here: revhk switch)