Understand the h5 file structure

[Seif_Elkerdany]

After running the simulation the results are saved on my computer as h5 file so I want to understand how the sensor readings are stored in the h5 file.
I want to extract the current density value per voxel. Is it feasible if I have the result h5 file?

[bryn]

The current density is computed on the fly in the sensor extractor in Sim4Life. It is not stored in the .h5 file.

[bryn]

to get the current density in Python you could use a script like

import s4l_v1.document as document

try:
    # add a SimulationExtractor for the simulation call "LF"
    simulation = document.AllSimulations["LF"]
    simulation_extractor = simulation.Results()

    # create an EmSensorExtractor
    em_sensor_extractor = simulation_extractor["Overall Field"]
    em_sensor_extractor.FrequencySettings.ExtractedFrequency = u"All"
    document.AllAlgorithms.Add(em_sensor_extractor)

    # update the pipeline, make sure current density is extracted
    em_sensor_extractor.Outputs["J(x,y,z,f0)"].Update()

    # get data
    current_density_field = em_sensor_extractor.Outputs["J(x,y,z,f0)"].Data

except Exception as exc:
    import traceback
    traceback.print_exc()