[Simnibs-discuss] matsimnibs matrix and angles

Annalisa Schuler annalisa.schuler at hsancamillo.it
Mon Sep 6 10:40:19 CEST 2021

Hi Giacomo, 

your question is a bit vague. 
What exactly do you try to achieve? 
Are you using Softaxic? 
I am also playing a bit with the software output and how to feed it into matsimnibs at the moment. 
Maybe we could share some experience? 



Annalisa Schuler 
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Da: "Fang Cao" <fang.cao at regionh.dk> 
A: "Giacomo Bertazzoli" <giacomo.bertazzoli at unitn.it> 
Cc: "simnibs-discuss at drcmr.dk" <simnibs-discuss at drcmr.dk> 
Inviato: Lunedì, 6 settembre 2021 9:53:19 
Oggetto: Re: [Simnibs-discuss] matsimnibs matrix and angles 

Dear Giacomo, 

The coordinate system used in Simnibs is defined as the first figure (left) in the attached pdf file. Please let me know if you need more information from us. 

Very best, 

From: Simnibs-discuss <simnibs-discuss-bounces at drcmr.dk> on behalf of Giacomo Bertazzoli <giacomo.bertazzoli at unitn.it> 
Sent: Friday, 3 September 2021 11.33 
To: simnibs-discuss at drcmr.dk <simnibs-discuss at drcmr.dk> 
Subject: [Simnibs-discuss] matsimnibs matrix and angles 
Dear all, 
We would like to know how the output affine transformation matrix (matsimnibs) is obtained when simulating the efield or when doing the coil optimization. In particular we do not understand if that matrix is the result of multiple rotations and in the case in which order they occur (we supposed z-x-y). We need this information because we are trying to assess the difference (in angle) between two coil positions. 
All the very best, 


Giacomo Bertazzoli, PhD Candidate 
Cognition Neurostimulation & Connectivity Lab - CIMeC 
University of Trento, Corso Bettini 31, 38068 Rovereto (TN) Italy 
Email: [ mailto:giacomo.bertazzoli at unitn.it | giacomo.bertazzoli at unitn.it ] 
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[ https://www.linkedin.com/in/giacomo-bertazzoli-8737b160/ | https://www.linkedin.com/in/giacomo-bertazzoli-8737b160/  ] 

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