docstr: Returns the x and y coordinates corresponding to the magnitudes of
  each variable displayed in the radar plot
docstr_tok: ["Returns","the","x","and","y","coordinates","corresponding","to","the","magnitudes","of","each","variable","displayed","in","the","radar","plot"]
code: def _to_xy_coords(df, r, theta, center=0, offset=0.00):
      """Returns the x and y coordinates corresponding to the magnitudes of
      each variable displayed in the radar plot
      """
      # offset from center of circle
      ys = (df[r] + offset) * np.sin(df[theta]) + center
      xs = (df[r] + offset) * np.cos(df[theta]) + center
      return pd.DataFrame({"xs": xs, "ys": ys})
  
imports: from chartify._core.colors import Color
  from chartify._core.chart import Chart
  from chartify._core.style import Style
  from chartify._core.axes import BaseAxes
  from chartify._core.plot import BasePlot
  from chartify._core.callout import Callout
  from chartify._core.options import options
  import numpy
  import pandas
label_desc: Use image node_id 2 for calling the PlotRadar obj's underlying member method code with example usage: obj._to_xy_coords(df, r, theta, center, offset) and returns: pd