If this load history is ODB history output, you can create XY Data (Visualization module, Tools->XY Data->Create...: Source - ODB history output), edit it (select and copy both columns), and paste it into Amplitude Data tab (Load module, Tools->Amplitudes->Create...: Type - Tabular).
This is not my problem. Because also with GetData software I can convert it to two-column data for use in amplitude.
My question is that the vertical axis of this graph represents the values of the period in Radians. The examples I have already learned and done were either in terms of force-control or displacement-control in terms of Newtons or millimeters. But here the values are given in Radians. Using trigonometric relations, I converted the vertical axis to values in millimeters according to the distance between the place of the load and the column face.
Is there a better solution?
According to the text of the article, this loading was selected from: (Cyclic loading protocol of AISC-341-10.) So probably there should be a more correct method to use this diagram.