class_docstr: **Bases:** :class:`GraphicsObject <pyqtgraph.GraphicsObject>`
class_docstr_tok: ["*","*","Bases",":","*","*",":","class",":","`","GraphicsObject","<","pyqtgraph.GraphicsObject",">","`"]
code: def dataBounds(self, ax, frac=1.0, orthoRange=None):
      if self._dataBounds is None:
          return (None, None)
      return self._dataBounds[ax]
  
imports: import numpy
  from ..None import Qt, colormap
  from ..None import functions
  from ..Qt import QtCore, QtGui
  from .GraphicsObject import GraphicsObject
label_desc: Use image node_id 16 for calling the PColorMeshItem obj's underlying member method code with example usage: obj.dataBounds(ax, frac, orthoRange) and returns: self, None,  None