vishack.data.ezca

Easy channel access (EZCA) utilities.

Functions

parallel_read(ezca, channels)

Read channels values and returns a dict of values in the EPICS record.

parallel_time_average(ezca, channels[, ...])

Read process variables channels and returns a dict of time averages

parallel_time_series(ezca, channels[, ...])

Read channels time-series and returns of dict of time-series.
vishack.data.ezca.parallel_read(ezca, channels)

Read channels values and returns a dict of values in the EPICS record.

Parameters

  • ezca (ezca.ezca.Ezca) – Ezca instance.

  • channels (list of str) – The channels to the read

Returns

A dictionary with channel names as the key and time-series as the value.

Return type

dict

vishack.data.ezca.parallel_time_average(ezca, channels, duration=1.0, fs=None)

Read process variables channels and returns a dict of time averages

Parameters

  • ezca (ezca.ezca.Ezca) – Ezca instance.

  • channels (list of str) – The channels to be read.

  • duration (float, optional) – The duration (s). Defaults to 1 second.

  • fs (float, optional) – Sampling frequency (s). Note, the sampling frequency of EPICS slow channels is maximum at 8 Hz. If None, will read as fast as it can. Defaults None.

Returns

A dictionary with channel names as the keys and the time average as the value.

Return type

dict

vishack.data.ezca.parallel_time_series(ezca, channels, duration=1.0, fs=None)

Read channels time-series and returns of dict of time-series.

Parameters

  • ezca (ezca.ezca.Ezca) – Ezca instance.

  • channels (list of str) – The channels to be read.

  • duration (float, optional) – The duration (s). Defaults to 1 second.

  • fs (float, optional) – Sampling frequency (s). Note, the sampling frequency of EPICS slow channels is maximum at 8 Hz. If None, will read as fast as it can. Defaults None.

Returns

A dictionary with channel names as the keys and time-series as the values.

Return type

dict