class_docstr: A parameter group that specifies a set of filters to apply to tabular data.
      
class_docstr_tok: ["A","parameter","group","that","specifies","a","set","of","filters","to","apply","to","tabular","data","."]
code: def __init__(self):
      self.fields = {}
      ptree.types.GroupParameter.__init__(
          self, name="Data Filter", addText="Add filter..", addList=[]
      )
      self.sigTreeStateChanged.connect(self.filterChanged)
  
imports: from collections import OrderedDict
  import numpy
  from ..None import functions
  from ..None import parametertree
  from ..Qt import QtCore
label_desc: Use image node_id 1 to create a new DataFilterParameter object from inherited base classes: ptree.types with example: obj = DataFilterParameter()