pylag.processing.utils module

PyLag utility functions

pylag.processing.utils.get_file_list(data_dir, file_stem)

Get sorted file list

Parameters:

• data_dir (str) – The directory containing the files.

• file_stem (str) – The part of the file name that is common to all output files. For example, if ensemble outputs are stored in the files pylag_1.nc, pylag_2.nc etc, then the file_stem could be pylag_.

pylag.processing.utils.get_grid_bands(array_in)

Return grid bands for data on a regular 1D grid

Parameters:

array (1D NumPy array) – 1D array of regularly spaced data

Returns:

1D array with size len(array) + 1, corresponding to the grid edges

Return type:

1D NumPy Array

pylag.processing.utils.get_time_index(dates, ref_date, tol=60)

Get array index that best matches ref_date

Parameters:

• dates (ndarray, Datetime)

• ref_date (Datetime)

pylag.processing.utils.round_time(datetime_raw, rounding_interval=3600)

Apply rounding to datetime objects

Rounding is sometimes required when simulation times are written to file with limited precision.

Parameters:

• datetime_raw (List, Datetime) – List of datetime objects to which rounding should be applied

• rounding_interval (int, optional) – No. of seconds to round to (default 3600, or one hour)

• Returns

• --------

• datetime_rounded (List, Datetime) – List of rounded datetime objects