code: def get(self, repi, mag):
          
          mag_idx = numpy.abs(mag - self.mags).argmin()
          dists = []
          for dist in repi:
              repi_idx = numpy.abs(dist - self.repi).argmin()
              dists.append(self.reqv[repi_idx, mag_idx])
          return numpy.array(dists)
docs: :param repi: an array of epicentral distances in the range self.repi
          :param mag: a magnitude in the range self.mags
          :returns: an array of equivalent distances