This commit is contained in:
jupfi 2024-06-24 18:09:46 +02:00
parent c72be61c0f
commit 1fceff04d7
4 changed files with 36 additions and 17 deletions

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@ -232,9 +232,15 @@ class FunctionOption(Option):
obj = cls(data["name"], functions)
obj.value = Function.from_json(data["value"])
return obj
class TableOption(Option):
"""A table option has rows and columns and can be used to store a table of values. The value is a list of lists."""
"""A table option has rows and columns and can be used to store a table of values.
The table option acts as a 'meta' option, which means that we can add different types of options to the table as rows.
Associated with every row we can add a number of different values.
The number of rows can be adjusted at runtime.
"""
def __init__(self, name: str, value) -> None:
"""Initializes the table option."""

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@ -1,3 +1,5 @@
"""The phase table module contains the PhaseTable class, which interprets the TX parameters of a QuackSequence object and then generates a table of different phase values and signs for each phasecycle."""
import logging
import numpy as np
from collections import OrderedDict
@ -11,6 +13,7 @@ class PhaseTable:
"""A phase table interprets the TX parameters of a QuackSequence object and then generates a table of different phase values and signs for each phasecycle."""
def __init__(self, quackseq):
"""Initializes the phase table."""
self.quackseq = quackseq
self.phase_array = self.generate_phase_array()
@ -21,7 +24,6 @@ class PhaseTable:
phase_array (np.array): A table of phase values for each phasecycle.
The columns are the values for the different TX pulse parameters and the rows are the different phase cycles.
"""
phase_table = OrderedDict()
events = self.quackseq.events
@ -63,7 +65,9 @@ class PhaseTable:
logger.info(phase_table)
# Now get the maximum phase group
max_phase_group = int(max([phase_group for phase_group, _ in phase_table.values()]))
max_phase_group = int(
max([phase_group for phase_group, _ in phase_table.values()])
)
logger.info(f"Max phase group: {max_phase_group}")
@ -79,7 +83,7 @@ class PhaseTable:
for parameter, (group, phase_values) in phase_table.items():
if max_phase_values < len(phase_values):
max_phase_values = len(phase_values)
n_rows *= max_phase_values
max_phase_values = 1
@ -155,7 +159,9 @@ class PhaseTable:
try:
total_group_phases[i] += [parameter, phases[i]]
except IndexError:
logger.info(f"Index Error 1: Parameter {parameter}, Phases: {phases}")
logger.info(
f"Index Error 1: Parameter {parameter}, Phases: {phases}"
)
return total_group_phases
@ -170,12 +176,14 @@ class PhaseTable:
try:
phase_array[row, column] = phase_value
except IndexError as e:
logger.info(f"Index error 2: {row}, {column}, {phase_value}, {phase}, {e}")
logger.info(
f"Index error 2: {row}, {column}, {phase_value}, {phase}, {e}"
)
logger.info(phase_array)
return phase_array
def update_phase_array(self):
"""Update the phase array of the sequence."""
self.phase_array = self.generate_phase_array()
@ -184,15 +192,17 @@ class PhaseTable:
def phase_array(self) -> np.array:
"""The phase array of the sequence."""
return self._phase_array
@phase_array.setter
def phase_array(self, phase_array : np.array):
def phase_array(self, phase_array: np.array):
self._phase_array = phase_array
@property
def n_phase_cycles(self) -> int:
"""The number of phase cycles in the sequence."""
return self.phase_array.shape[0]
@property
def n_parameters(self) -> int:
"""The number of TX pulse parameters in the sequence."""
return self.phase_array.shape[1]

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@ -2,7 +2,7 @@
This example demonstrates how to simulate a composite FID signal using the quackseq simulator.
See the paper:
See the paper:
Sauer, K.L., Klug, C.A., Miller, J.B. et al. Using quaternions to design composite pulses for spin-1 NQR. Appl. Magn. Reson. 25, 485500 (2004). https://doi.org/10.1007/BF03166543
This also works for Samples with spin > 1.
@ -11,15 +11,16 @@ This also works for Samples with spin > 1.
from quackseq.pulsesequence import QuackSequence
from quackseq.functions import RectFunction
def create_COMPFID():
def create_COMPFID():
"""Creates a composite FID sequence."""
COMPFID = QuackSequence("COMPFID")
COMPFID.add_pulse_event("tx1", "3u", 100, 0, RectFunction())
COMPFID.add_pulse_event("tx2", "6u", 100, 45, RectFunction())
# This makes the phase 45, 135, 225, 315 (because of the previous 45 degree phase shift and 360/4 = 90 degree phase shift)
COMPFID.set_tx_n_phase_cycles("tx2", 4)
COMPFID.add_blank_event("blank", "5u")
COMPFID.add_readout_event("rx", "100u")
# No phase shifiting of the receive data but weighting of -1 for the 45 degree pulse, +1 for the 135 degree pulse, -1 for the 225 degree pulse and +1 for the 315 degree pulse
@ -27,4 +28,4 @@ def create_COMPFID():
COMPFID.set_rx_readout_scheme("rx", readout_scheme)
return COMPFID
return COMPFID

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@ -3,13 +3,15 @@
from quackseq.pulsesequence import QuackSequence
from quackseq.functions import RectFunction
def create_SEPC() -> QuackSequence:
"""Creates a simple spin echo sequence with phase cycling.
The sequence consists of a pi/2 pulse, a pi pulse, and a readout event.
The phase cycling is set to cycle through 0°, 90°, 180°, 270° for the first pulse and constant 180° for the second pulse.
The readout phase for the different phase cycles is set to 0°, 90°, 180°, 270°.
Returns:
QuackSequence: The SEPC sequence
"""
@ -29,4 +31,4 @@ def create_SEPC() -> QuackSequence:
sepc.set_rx_readout_scheme("rx", readout_scheme)
return sepc
return sepc