class_docstr: Plot curve that monitors an ROI and image for changes to automatically replot.
class_docstr_tok: ["Plot","curve","that","monitors","an","ROI","and","image","for","changes","to","automatically","replot","."]
code: def roiChangedEvent(self):
      d = self.getRoiData()
      self.updateData(d, self.xVals)
  
imports: from ..Qt import QtCore, QtGui, QtWidgets
  import math
  import sys
  import warnings
  import numpy
  from ..None import Qt, debug
  from ..None import functions
  from ..None import getConfigOption
  from .GraphicsObject import GraphicsObject
label_desc: Use image node_id 3 for calling the ROIPlotItem obj's underlying member method code with example usage: obj.roiChangedEvent() without return types