code: def format_coord(self, x, y):
          
          p, b = stereonet_math.geographic2plunge_bearing(x, y)
          s, d = stereonet_math.geographic2pole(x, y)
          pb = u'P/B={:0.0f}\u00b0/{:03.0f}\u00b0'.format(p[0], b[0])
          sd = u'S/D={:03.0f}\u00b0/{:0.0f}\u00b0'.format(s[0], d[0])
          return u'{}, {}'.format(pb, sd)
docs: Format displayed coordinates during mouseover of axes.