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Kyle Lutz authored
This adds a new interaction mode to vtkChart which zooms the X and Y axis based on the X and Y movement of the mouse. This is similar to the zoom mechanism in matplotlib. This also adds some documentation for the mouse actions enum in vtkChart along with a test for the new ZOOM_AXIS mode. Change-Id: If6c923607a3bf86ec8f6bc16188d1e49a260ba95
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