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Bug 1721 - create and add template grads

Reported 2012-09-19 16:05:00 +0200
Modified 2019-08-10 12:29:16 +0200
Product: FieldTrip
Component: core
Version: unspecified
Hardware: PC
Operating System: Windows
Importance: P3 normal
Assigned to:
Depends on:
Blocks: 1850
See also:

Jörn M. Horschig - 2012-09-19 16:05:43 +0200

this is important for real-time application, because not the complete header information is written at startup, e.g. chanpos is missing. For computing the planar gradient, this information is needed initially (to get a proper tra-matrix) A first version of these templates can be easily done by using our test datasets. Has to be checked for completeness though. For our CTF275 dataset, we can actually build a complete header/grad structure, because the channels which are deactivate now were active before the last annual service. Just needs to be merged properly.

Johanna - 2012-09-19 16:35:09 +0200

also see bug 1482

Jörn M. Horschig - 2012-10-01 16:53:15 +0200

the proper merging of the CTF275 grads is actually not that easy. I thought it can just be done by applying some rotation matrix and maybe some translation, but that's not enough sufficient somehow... CTFs newCombinedDs will probably also not work here, will it?

Jörn M. Horschig - 2012-11-26 13:28:53 +0100

taking this up again because of bug 1850

Jörn M. Horschig - 2014-07-16 14:14:42 +0200

I will probably never do this as there is no real demand for this and way too much work to do it properly.

Robert Oostenveld - 2019-08-10 12:29:16 +0200

This closes a whole series of bugs that have been resolved (either FIXED/WONTFIX/INVALID) for quite some time. If you disagree, please file a new issue describing the issue on