docstr: Compute x and y positions for separation lines for given angles.
  
          
docstr_tok: ["Compute","x","and","y","positions","for","separation","lines","for","given","angles","."]
code: def _compute_separations(inner, outer, angles):
      """Compute x and y positions for separation lines for given angles."""
      return [np.array([[a, inner], [a, outer]]) for a in angles]
  
imports: from itertools import product
  import numpy
  import param
  from matplotlib.collections import LineCollection, PatchCollection
  from matplotlib.patches import Circle, Wedge
  from ...core.data import GridInterface
  from ...core.spaces import HoloMap
  from ...core.util import dimension_sanitizer, is_nan
  from ..mixins import HeatMapMixin
  from .element import ColorbarPlot
  from .raster import QuadMeshPlot
  from .util import filter_styles
label_desc: Use image node_id 2 for calling the RadialHeatMapPlot obj's underlying member method code with example usage: obj._compute_separations(inner, outer, angles) and returns: unknown