title: UnicodeDecodeError: 'charmap' codec can't decode byte 0x8d in position 298: character maps to <undefined>
body: <p>I used <code>sed = np.loadtxt(&quot;file.dat&quot;)</code> to read the dat file which include different signals. However, I got <code>UnicodeDecodeError: 'charmap' codec can't decode byte 0x81 in position 1406: character maps to &lt;undefined&gt;</code>. May I know how can I solve this issue?
  I am not sure how to read the .dat file which contains the vibration signal.</p>