Planar Angle Panel

Measure the angle between two planes, defined by two atom selections.

To open this panel, click the Tasks button and browse to Structure Analysis → Planar Angle Measurement.

Planar Angle Panel Features

First Plane section
Second Plane section

Define the planes by picking atoms in the Workspace or entering SMARTS patterns for the planes. These two sections have common features, described below.

Atom N text boxes

Atom numbers of the atoms picked to define a plane. You can enter values directly in the text boxes, or edit the values.

Pick option

Select this option to pick atoms in the Workspace to define a plane. The atom numbers of the picked atoms are displayed in the Atom N text boxes. When all three atoms have been picked, this option is automatically deselected. If you select it again, you can change all three atoms by picking, after confirmation.

SMARTS text box

Enter a SMARTS pattern to define the atoms for the plane. The first three atoms in the first match of the SMARTS pattern are used to define the plane.

Evaluate from Workspace button

Locate matches to the SMARTS pattern in the Workspace, and populate the Atom N text boxes with the first three atoms (lowest atom numbers) that match.

Planar Angle text

Value of the planar angle. The value is displayed when both planes are defined.

Compute for Selected Entries button

Compute the planar angle for the specified atoms for the entries that are selected in the Project Table. The angles are written to a CSV file.