This function converts the results of a single-run LTspice AC analysis into two traces (mag, phase) that can be added to SLiCAP plots. Stepping is not (yet) supported. :param fileName: Name of the file. The file should be located in the ditectory given in *ini.
(fileName, dB=False, color='c')
| 1581 | return traceDict |
| 1582 | |
| 1583 | def LTspiceAC2SLiCAPtraces(fileName, dB=False, color='c'): |
| 1584 | """ |
| 1585 | This function converts the results of a single-run LTspice AC analysis |
| 1586 | into two traces (mag, phase) that can be added to SLiCAP plots. |
| 1587 | Stepping is not (yet) supported. |
| 1588 | |
| 1589 | :param fileName: Name of the file. The file should be located in |
| 1590 | the ditectory given in *ini.txt_path*. |
| 1591 | :type fileName: str |
| 1592 | |
| 1593 | :param dB: True if the trace magnitude should be in dB, else False. |
| 1594 | Default value = False |
| 1595 | :type dB: bool |
| 1596 | |
| 1597 | :param color: Matplotlib color name. Valid names can be found at: |
| 1598 | https://matplotlib.org/stable/gallery/color/named_colors.html |
| 1599 | Default value is cyan (c); this does not correspond with one |
| 1600 | of the standard gain colors of the asymptotic-gain model. |
| 1601 | :type color: str |
| 1602 | |
| 1603 | :return: a list with two trace dicts, magnitude and phase, respectively. |
| 1604 | :rtype: list |
| 1605 | |
| 1606 | :Example: |
| 1607 | |
| 1608 | >>> LTmag, LTphase = LTspiceAC2SLiCAPtraces('LTspiceACdata.txt') |
| 1609 | """ |
| 1610 | try: |
| 1611 | f = open(ini.txt_path + fileName, 'r', encoding='utf-8', errors='replace') |
| 1612 | lines = f.readlines() |
| 1613 | f.close() |
| 1614 | except: |
| 1615 | print('Cannot find: ', fileName) |
| 1616 | lines = [] |
| 1617 | freqs = [] |
| 1618 | mag = [] |
| 1619 | phase = [] |
| 1620 | for i in range(len(lines)): |
| 1621 | if i != 0: |
| 1622 | line = lines[i].split() |
| 1623 | if ini.hz: |
| 1624 | freqs.append(eval(line[0])) |
| 1625 | else: |
| 1626 | freqs.append(eval(line[0])*2*np.pi) |
| 1627 | dBmag, deg = line[1].split(',') |
| 1628 | dBmag = eval(dBmag[1:-2]) |
| 1629 | deg = eval(deg[0:-2]) |
| 1630 | if not dB: |
| 1631 | mag.append(10**(dBmag/20)) |
| 1632 | else: |
| 1633 | mag.append(dBmag) |
| 1634 | if ini.hz: |
| 1635 | phase.append(deg) |
| 1636 | else: |
| 1637 | phase.append(np.pi*deg/180) |
| 1638 | LTmag = trace([freqs, mag]) |
| 1639 | LTmag.label = 'LTmag' |
| 1640 | LTmag.color = color |