ExportSampleLogsToHDF5 dialog.
Table of Contents
| Name | Direction | Type | Default | Description |
|---|---|---|---|---|
| InputWorkspace | Input | MatrixWorkspace | Mandatory | The workspace containing sample logs to be exported |
| Blacklist | Input | str list | A list of any sample logs that should not be included in the HDF5 file | |
| Filename | Input | string | Mandatory | HDF5 file to save to. Allowed extensions: [‘.hdf5’, ‘.h5’, ‘.hdf’] |
Exports a workspace’s sample logs to a HDF5 file, with an option to exclude certain logs from being saved.
The algorithm makes no attempt to sort the sample logs into a hierarchy - each log is saved to its own dataset, in a group called Sample Logs. Time-series logs are averaged, and the first element of FloatArrayProperty time series logs is used. Where logs have units, the units are saved in the dataset’s metadata.
Example - Export sample logs to a new HDF5 file:
import h5py
import os
import sys
# The following is needed as strings read from h5py are formatted differently between Python 2 and 3
run_number_output = "Run number (read from file): {}"
if sys.version_info[0] < 3:
format_run_number = run_number_output.format
else:
format_run_number = lambda run_number: run_number_output.format(run_number.tostring().decode())
input_ws = Load(Filename="ENGINX00213855.nxs")
output_filename = os.path.join(config["defaultsave.directory"],
"ExportSampleLogsToHDF5DocTest.hdf5")
ExportSampleLogsToHDF5(InputWorkspace=input_ws,
Filename=output_filename,
Blacklist="nspectra")
with h5py.File(output_filename, "r") as f:
sample_logs_group = f["Sample Logs"]
print("Proton charge saved to file: {}".format("tot_prtn_chrg" in sample_logs_group))
print(format_run_number(sample_logs_group["run_number"][0]))
print("nspectra (blacklisted) saved to file: {}".format("nspectra" in sample_logs_group))
Output:
Proton charge saved to file: True
Run number (read from file): 213855
nspectra (blacklisted) saved to file: False
Categories: AlgorithmIndex | DataHandling\Logs
Python: ExportSampleLogsToHDF5.py (last modified: 2018-10-05)