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Did you do one of the following: • Define the FlexNet environment variable FLEXID_LIBRARY_PATH to point to the location of the dongle shared object, libhasp_linux_x86_64.so. • Define the system environment variable LD_LIBRARY_PATH to point to the location of the dongle shared object libhasp_linux_x86_64.so. ? Could you try to send us the output of lmhostid -flexid? that command should return the dongle id. You can also access the dongle firmware - if it is correctly installed - via the loopback address. On a browser, go to http://localhost:1947/ you should see the characteristics of the dongle. Let us know if it works.

I can see how the post is a little confusing. Sorry about that. The screenshot is the setting I want to have but when running the code snippet I do not get that squiggly line for the independent padding options. Instead the line is straight. Funny enough after clicking it manually it did go to the correctly prescribed values. So I'm 90% sure I just need to find some field in the global settings that looks something like global_grid_settings.bottompad.enum.ind_axis but am having a little trouble with the API documentation to find this setting

Hi @parsley, Thank you for your feedback and for reporting the issue you experienced. The MATCH tool has already been successfully used/validated by many users and offers several useful features. For example, it allows users to add loading or matching circuits the S-matrix of a simulation and obtain updated scattering parameters without re‑running the full simulation. Have you experienced any problems with this particular workflow? From the information you provided, the issue appears to be related to only the Initial Matching function—the option that generates a matching circuit for a given S-matrix of a simulation at a chosen target frequency. In your case, you reported that it worked with the dipole antenna example but not with your specific antenna model. We would be happy to discuss the details so we can reproduce the problem and resolve it quickly. We will contact you to find out a convenient time to follow up. Thank you again for bringing this to our attention.

Hi, You would get that error if there was no simulation named "0_17_35_29" in the currently opened document. Maybe you should check what simulations you have in your project and if you do have a simulation with that name? One way to list all simulation names via python is to run something like: for s in document.AllSimulations: print(s.Name)

This looks like the drivers for the dongle are missing or have not been installed. Did you check the manual on how to install drivers for Linux? Also, it would help if you send us the full log. You can do that by emailing us at: s4l-support-group@zmt.swiss Regards, Guillermo

Hi gc00, Apologies for late response. Do you still have the issue you reported above?

@Sylvain Hi, thank you for your reply. I changed modulated field to El. Loss Density and everything works.

@halder When I performed TI simulation using the spherical model, I found that if I changed the current direction of one pair of electrodes, the maximum value of the TI Max (x, y, z) slice remained unchanged. Changing the current of one pair of electrodes should have shifted from the original same-direction superposition to a reverse weakening, so why does it remain unchanged? Is it because Max Modulation only uses EM for calculations?

Thank you. Uploaded.

Hi, you can try something like the following to extract the reflection coefficient. You can always try to build extraction manually once and select "To python" by right-clicking on the end of the tree (i.e. the component you extract from your pipeline) import numpy import s4l_v1.analysis as analysis import s4l_v1.document as document import s4l_v1.model as model import s4l_v1.units as units from s4l_v1 import ReleaseVersion from s4l_v1 import Unit sim_name = "MRI Volume Coil Cleg = 29.5 pF" ###### define the sim name in this case this is a multiport FDTD simulation Adding a new EmMultiPortSimulationExtractor simulation = document.AllSimulations[sim_name] em_multi_port_simulation_extractor = simulation.Results() this is extracting a port inputs = [em_multi_port_simulation_extractor.Outputs["MRI Volume Coil Cleg = 29.5 pF - Endring source 1 (Birdcage 1)"]] em_port_simulation_extractor = analysis.extractors.EmPortSimulationExtractor(inputs=inputs) em_port_simulation_extractor.Name = "MRI Volume Coil Cleg = 29.5 pF - Endring source 1 (Birdcage 1)" em_port_simulation_extractor.UpdateAttributes() document.AllAlgorithms.Add(em_port_simulation_extractor) em_sensor_extractor = em_port_simulation_extractor["Endring source 1 (Birdcage 1)"] document.AllAlgorithms.Add(em_sensor_extractor) ref_coef_data = em_sensor_extractor.Outputs["Reflection Coefficient(f)"] ref_coef_data.Update() freqlist = ref_coef_data.Data.Axis ref_coef = refCoeff.Data.GetComponent(0) ref_coef_magnitude = np.sqrt(np.real(ref_coef)**2 + np.imag(ref_coef)**2) import matplotlib.pyplot as plt plt.plot(freqlist,ref_coef_magnitude)

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[image: 1736961843959-327c9ace-0099-4e59-b102-4a34c31e609c-sim4life_fxfwepw8sg.gif] to extract the inner normal vector to the cortical surface mask the field (set NaN outside GM) using the Mask Filter available under "Field Data Tools" in the top ribbion. add the Grey Matter Surface in the post-pro interpolate the (masked) field to the grey matter surface using the "Interpolator" which is active when the masked field and surface is selected. get the normal component via the NormalFieldEvaluator under the "Field Data Tools"