Pow ROI Zooming

To look more closely at a section of a graph, you need to pick a region of interest (ROI) for that graph. The current region of interest is shown by a blue box in the scope window. If there is no blue box, the ROI is an area large enough to display all of the elements (curves and images) of the selected graph and coincides with the enclosing black box in the scope.

There are four ways to change your region of interest:

  1. Right click and drag in the scope to create a new ROI.
  2. Left clicking and dragging in the scope will "drag" the current ROI box. The main graph will be replotted using the new ROI when you release the left mouse button.
  3. Use the Zoom In,Zoom 1,Zoom Out buttons. These create a new ROI half as big in both directions as the current ROI, centered around the same point as the current ROI.
  4. Right click and drag in the main POW window. Remember that ROI selection refers to the axes of the currently selected graph. You may drag a new ROI box that is partly or fully outside the currently displayed part of the graph.

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Last modified: Tue Oct 27 12:20:00 EST