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Commit e5eac3d7 authored by ssomnath's avatar ssomnath
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Better verbosity. Handling BE amplitudes too small in old parms files

parent a2dabb76
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pycroscopy/io/translators/be_odf.py
View file @ e5eac3d7
......@@ -156,16 +156,21 @@ class BEodfTranslator(Translator):
isBEPS, parm_dict = parmsToDict(path_dict['parm_txt'])
# Initial text files named some parameters differently
updated_parms = False
if parm_dict['VS_mode'] == 'AC modulation mode':
updated_parms = True
warn('Updating parameter "VS_mode" from invalid value'
' of "AC modulation mode" to "AC modulation mode with '
'time reversal"')
parm_dict['VS_mode'] = 'AC modulation mode with time reversal'
if parm_dict['BE_phase_content'] == 'chirp':
updated_parms = True
warn('Updating parameter "BE_phase_content" from older value'
' of "chirp" to "chirp-sinc hybrid"')
parm_dict['BE_phase_content'] ='chirp-sinc hybrid'
if updated_parms:
warn('Parameters were stored in text file with an older format'
'.Values for one or more parameters were updated')
if parm_dict['BE_amplitude_[V]'] < 1E-2:
new_val = 0.5151
warn('Updating parameter "BE_amplitude_[V]" from invalid value'
' of {} to {}'.format(parm_dict['BE_amplitude_[V]'],
new_val))
parm_dict['BE_amplitude_[V]'] = new_val
elif 'old_mat_parms' in path_dict.keys():
if self._verbose:
......@@ -1369,14 +1374,16 @@ class BEodfTranslator(Translator):
# % Extract values from parm text file
BE_signal_type = translate_val(parm_dict['BE_phase_content'],
['chirp-sinc hybrid', '1/2 harmonic excitation',
'1/3 harmonic excitation', 'pure sine'],
['chirp-sinc hybrid',
'1/2 harmonic excitation',
'1/3 harmonic excitation',
'pure sine'],
[1, 2, 3, 4])
if BE_signal_type is None:
raise NotImplementedError('This translator does not know how to '
'handle "BE_phase_content": "{}"'
''.format(parm_dict['BE_phase_content']))
# This is necessary when normalzing the AI by the AO
# This is necessary when normalizing the AI by the AO
self.harmonic = BE_signal_type
self.signal_type = BE_signal_type
if BE_signal_type is 4:
......@@ -1405,18 +1412,22 @@ class BEodfTranslator(Translator):
if VS_shift is not 0:
if self._verbose:
print('\tVS_shift = {}'.format(VS_shift))
VS_shift = translate_val(VS_shift, ['1/4', '1/2', '3/4'], [0.25, 0.5, 0.75])
VS_shift = translate_val(VS_shift,
['1/4', '1/2', '3/4'],
[0.25, 0.5, 0.75])
if VS_shift is None:
raise NotImplementedError(
'This translator does not know how to '
'handle "VS_cycle_phase_shift": "{}"'
''.format(parm_dict['VS_cycle_phase_shift']))
VS_in_out_cond = translate_val(parm_dict['VS_measure_in_field_loops'],
['out-of-field', 'in-field', 'in and out-of-field'], [0, 1, 2])
['out-of-field', 'in-field',
'in and out-of-field'],
[0, 1, 2])
if VS_in_out_cond:
raise NotImplementedError('This translator does not know how to '
'handle "VS_measure_in_field_loops": "{}"'
''.format(parm_dict['VS_measure_in_field_loops']))
'handle "VS_measure_in_field_loops": '
'"{}"'.format(parm_dict['VS_measure_in_field_loops']))
VS_ACDC_cond = translate_val(parm_dict['VS_mode'],
['DC modulation mode',
'AC modulation mode with time reversal',
......@@ -1436,8 +1447,11 @@ class BEodfTranslator(Translator):
FORC_B2 = parm_dict['FORC_V_low2_[V]']
# % build vector of voltage spectroscopy values
if VS_ACDC_cond == 0 or VS_ACDC_cond == 4: # DC voltage spectroscopy or current mode
if self._verbose:
print('\t\tBuilding spectroscopy waveform')
if VS_ACDC_cond == 0 or VS_ACDC_cond == 4:
if self._verbose:
print('\t\t\tDC voltage spectroscopy or current mode')
vs_amp_vec = generate_bipolar_triangular_waveform(VS_steps,
cycle_frac=VS_fraction,
phase=VS_shift,
......@@ -1445,7 +1459,9 @@ class BEodfTranslator(Translator):
cycles=VS_cycles,
offset=VS_offset)
elif VS_ACDC_cond == 2: # AC voltage spectroscopy with time reversal
elif VS_ACDC_cond == 2:
if self._verbose:
print('\t\t\tAC voltage spectroscopy with time reversal')
# Temporarily scale up the number of points in a cycle
actual_cycle_pts = int(VS_steps // VS_fraction)
vs_amp_vec = np.linspace(VS_amp / actual_cycle_pts, VS_amp,
......@@ -1460,6 +1476,8 @@ class BEodfTranslator(Translator):
vs_amp_vec = np.tile(vs_amp_vec, int(VS_cycles))
if FORC_cycles > 1:
if self._verbose:
print('\t\t\tWorking on adding FORC')
vs_amp_vec = vs_amp_vec / np.max(np.abs(vs_amp_vec))
FORC_cycle_vec = np.arange(0, FORC_cycles + 1, FORC_cycles / (FORC_cycles - 1))
FORC_A_vec = FORC_cycle_vec * (FORC_A2 - FORC_A1) / FORC_cycles + FORC_A1
......@@ -1474,7 +1492,11 @@ class BEodfTranslator(Translator):
vs_amp_vec = VS_amp_mat.reshape(int(FORC_cycles * VS_cycles * VS_steps))
# Build UDVS table:
if VS_ACDC_cond is 0 or VS_ACDC_cond is 4: # DC voltage spectroscopy or current mode
if self._verbose:
print('\t\tBuilding UDVS table')
if VS_ACDC_cond is 0 or VS_ACDC_cond is 4:
if self._verbose:
print('\t\t\tDC voltage spectroscopy or current mode')
if VS_ACDC_cond is 0:
UD_dc_vec = np.vstack((vs_amp_vec, np.zeros(len(vs_amp_vec))))
......@@ -1510,7 +1532,9 @@ class BEodfTranslator(Translator):
udvs_table[BE_IF_switch == 1, 5] = udvs_table[BE_IF_switch == 1, 1]
udvs_table[BE_OF_switch == 1, 6] = udvs_table[BE_IF_switch == 1, 1]
elif VS_ACDC_cond is 2: # AC voltage spectroscopy
elif VS_ACDC_cond is 2:
if self._verbose:
print('\t\t\tAC voltage spectroscopy')
num_VS_steps = vs_amp_vec.size
half = int(0.5 * num_VS_steps)
......
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