Chimera Commands Index

angle  atom1  atom2  atom3  [ atom4 [ dihedral true | false ]]

angle  object1  object2

The angle command measures angles:

Any atom specification that gives the proper number of atoms can be used. The order of specification is important, but atoms need not be connected. Objects are specified by ID as shown in the Axes/Planes/Centroids table. For angle measurements, axes and planes are treated as infinite. The angle value in degrees is reported in the status line and Reply Log.

Three or four atoms can be specified collectively using the word selected, sel, or picked if the current selection contains only those atoms; the order in which the atoms were selected (most likely picked) is used. When order information is lacking (for example, the atoms were selected simultaneously), the angle actually measured may not be the one intended.

The angle command provides a static measurement; changes are not reported automatically. Angles formed by atoms can be monitored continuously using the Angles/Torsions panel.

See also: adjust, rotation, ramachandran, distance, define