class_docstr: Abstract class for CtrlNodes that can connect to plots.
class_docstr_tok: ["Abstract","class","for","CtrlNodes","that","can","connect","to","plots","."]
code: def __init__(self, name, ui=None, terminals=None):
      # print "PlottingCtrlNode.__init__ called."
      CtrlNode.__init__(self, name, ui=ui, terminals=terminals)
      self.plotTerminal = self.addOutput("plot", optional=True)
  
imports: import numpy
  from ...Qt import QtCore, QtWidgets
  from ...WidgetGroup import WidgetGroup
  from ...widgets.ColorButton import ColorButton
  from ...widgets.SpinBox import SpinBox
  from ..Node import Node
label_desc: Use image node_id 1 to create a new PlottingCtrlNode object from inherited base classes: CtrlNode with example: obj = PlottingCtrlNode(name, ui, terminals)