code: def extract_stripchart(self, stripchart='overall', expose_data=True):
          
          csv_fname = self.fname.split(os.sep)[-1].replace(".usc", ".csv")
          scp_fname = self.fname.split(os.sep)[-1].replace(".usc", ".SCP")
          case_details = {'case': self.fname.__repr__()[1:-1],
                          'stripchart': stripchart,
                          'target': self.path.__repr__()[1:-1] + csv_fname}
          script = STRIPCHART_EXTRACTION_TEMPLATE.substitute(case_details)
          with open(self.path + scp_fname, 'w') as fobj:
              fobj.write(script)
          self.case.visible = True
          self.case.application.playscript(self.path + scp_fname)
          self.case.visible = False
          os.remove(self.path + scp_fname)
          if expose_data is True:
              self.stripcharts[stripchart] = unisim_csv_formatting(self.path,
                                                                   csv_fname)
          if os.path.isdir(self.path+'trends') is not True:
              os.mkdir(self.path + 'trends')
          shutil.copy(self.path + csv_fname,
                      self.path + 'trends\\{}.csv'.format(stripchart))
          os.remove(self.path + csv_fname)
docs: Extract a specific stripchard and exposes the data in the namespace