from __future__ import annotations
import logging
from typing import TYPE_CHECKING, cast
from opentelemetry import trace
from qcodes import config
from qcodes.parameters import ParameterBase
from ..descriptions.detect_shapes import detect_shape_of_measurement
from ..measurements import Measurement
from ..threading import process_params_meas
from .do_nd_utils import _handle_plotting, _register_parameters, _set_write_period
LOG = logging.getLogger(__name__)
TRACER = trace.get_tracer(__name__)
if TYPE_CHECKING:
from ..descriptions.versioning.rundescribertypes import Shapes
from ..experiment_container import Experiment
from .do_nd_utils import AxesTupleListWithDataSet, ParamMeasT
[docs]
@TRACER.start_as_current_span("qcodes.dataset.do0d")
def do0d(
*param_meas: ParamMeasT,
write_period: float | None = None,
measurement_name: str = "",
exp: Experiment | None = None,
do_plot: bool | None = None,
use_threads: bool | None = None,
log_info: str | None = None,
) -> AxesTupleListWithDataSet:
"""
Perform a measurement of a single parameter. This is probably most
useful for an ArrayParameter that already returns an array of data points
Args:
*param_meas: Parameter(s) to measure at each step or functions that
will be called at each step. The function should take no arguments.
The parameters and functions are called in the order they are
supplied.
write_period: The time after which the data is actually written to the
database.
measurement_name: Name of the measurement. This will be passed down to
the dataset produced by the measurement. If not given, a default
value of 'results' is used for the dataset.
exp: The experiment to use for this measurement.
do_plot: should png and pdf versions of the images be saved after the
run. If None the setting will be read from ``qcodesrc.json``
use_threads: If True measurements from each instrument will be done on
separate threads. If you are measuring from several instruments
this may give a significant speedup.
log_info: Message that is logged during the measurement. If None a default
message is used.
Returns:
The QCoDeS dataset.
"""
if do_plot is None:
do_plot = cast(bool, config.dataset.dond_plot)
meas = Measurement(name=measurement_name, exp=exp)
if log_info is not None:
meas._extra_log_info = log_info
else:
meas._extra_log_info = "Using 'qcodes.dataset.do0d'"
measured_parameters = tuple(
param for param in param_meas if isinstance(param, ParameterBase)
)
try:
shapes: Shapes | None = detect_shape_of_measurement(
measured_parameters,
)
except TypeError:
LOG.exception(
f"Could not detect shape of {measured_parameters} "
f"falling back to unknown shape."
)
shapes = None
_register_parameters(meas, param_meas, shapes=shapes)
_set_write_period(meas, write_period)
with meas.run() as datasaver:
datasaver.add_result(*process_params_meas(param_meas, use_threads=use_threads))
dataset = datasaver.dataset
return _handle_plotting(dataset, do_plot)