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Bug 2489 - chantype unknown when reading fif file with only a couple of channels

Status	NEW
Reported	2014-03-05 12:44:00 +0100
Modified	2014-03-31 13:00:04 +0200
Product:	FieldTrip
Component:	fileio
Version:	unspecified
Hardware:	PC
Operating System:	Windows
Importance:	P5 normal
Assigned to:	Stephen Whitmarsh
URL:
Tags:
Depends on:	1867
Blocks:
See also:

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Stephen Whitmarsh - 2014-03-05 12:44:05 +0100

Hejsan, It seems that when I record only a couple of channels (no MEG channels and two bipolar), chantypes are not found ('unknown'). This then results in ft_read_event not finding 'binaryindx' or 'analogindx' (ft_read_event, line 1214:). I would be happy to fix it, if anyone can give me a clue how to. Otherwise, it is at the moment not possible to specify chanindx when calling ft_read_event another way which would be a workaround. That option is only supported for Yokogama systems. Any suggestions? Best, Stephen

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Stephen Whitmarsh - 2014-03-05 12:46:49 +0100

by the way, the default chanindx for events should be the channel called 'STI101' (which is correct in .label).

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Jan-Mathijs Schoffelen - 2014-03-06 15:42:23 +0100

Assigned to a named person, to keep this on the radar.

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Stephen Whitmarsh - 2014-03-31 13:00:04 +0200

Hi, I just changed my email notifications so I'll actually get updated when I'm assigned or CC'd :-) To return to the issue: is the team ok with adding chanindx as a option for neuromag_fif filetypes in ft_read_event? Or would it be better to try to improve chantype identification? For several reasons I prefer the first option, the main one being that it allows one to choose between the digital and analogue trigger channels. Best, Stephen