class_docstr: Isocurves of a tri mesh with data at vertices at different levels.
  
  Parameters
  ----------
  vertices : ndarray, shape (Nv, 3) | None
      Vertex coordinates.
  tris : ndarray, shape (Nf, 3) | None
      Indices into the vertex array.
  data : ndarray, shape (Nv,) | None
      scalar at vertices
  levels : ndarray, shape (Nlev,) | None
      The levels at which the isocurve is constructed from "data".
  color_lev : Color, tuple, colormap name or array
      The color to use when drawing the line. If an array is given, it
      must be of shape (Nlev, 4) and provide one rgba color by level.
  **kwargs : dict
      Keyword arguments to pass to `LineVisual`.
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docstr: The mesh data
docstr_tok: ["The","mesh","data"]
code: def data(self):
      """The mesh data"""
      return self._vertices, self._tris, self._data
  
file_path: vispy/vispy/visuals/isoline.py
imports: from __future__ import division
  import numpy
  from .line import LineVisual
  from ..color import ColorArray
  from ..color.colormap import _normalize, get_colormap
label_desc: Use image node_id 4 for calling the IsolineVisual obj's underlying member method code with example usage: obj.data() and returns: self,  self,  self