This app can be used to calculate bins of torsional angles for each group and create a polar contour for them.
Download the file Torsional_Angle_Wheel_Plot.opx, and then drag-and-drop onto the Origin workspace. An icon will appear in the Apps Gallery window.
NOTE: This tool requires OriginPro.
Make a worksheet for angles data active. Click on the Torsional Angle Wheel Plot icon in the Apps Gallery window. A dialog will open.
In the opened dialog, select angles data. Set a value for Number of Bins for Angles. It will divide the interval 0-360 degrees into evenly spaced intervals. Show Center Radial Grids checkbox can determine whether to show radial grids around the center of the polar plot.
Click OK button. A graph will be created. Plot data is in the created MBook. And radial axis major labels are listed in a new column in the input worksheet by default.
SAMPLE OPJU FILE
This app provides a sample OPJU file. Right click on the Torsional Angle Wheel Plot icon in the Apps Gallery window, and choose Show Samples Folder from the short-cut menu. A folder will open. Drag-and-drop the project file TAWPlotEx.opju from the folder onto Origin. The Notes window in the project shows detailed steps.
Note: If you wish to save the OPJU after changing, it is recommended that you save to a different folder location (e.g. User Files Folder).
Bins of angles are calculated as follows:
Remove missing values in data and correct angles to the interval 0-360.
Count angles in each bin interval for each group and divide it by the size of each group.
Analysis of backbone torsion angles