load_labone_csv#

load_labone_csv(fname: str) → ndarray[source]#

Load a csv file generated from LabOne.

Load a CSV file containing generic data as saved by the LabOne User Interface into a numpy structured array.

Parameters:

  • filename – The filename of the CSV file to load.

  • fname (str) –

Returns:

A numpy structured array of shape (num_points,) whose field names correspond to the column names in the first line of the CSV file. num_points is the number of lines in the CSV file - 1.

Return type:

ndarray

Example

>>> import zhinst.utils
>>> # Load the CSV file of PID error data (node: /dev2004/pids/0/error)
>>> data = zhinst.utils.load_labone_csv('dev2004_pids_0_error_00000.csv')
>>> import matplotlib.pyplot as plt
>>> # Plot the error
>>> plt.plot(data['timestamp'], data['value'])