The crop tool should preserve the 2D locations. It is in the code and
I've just checked on my example and there was no problem. Perhaps send
me your dataset before cropping and which channel you removed and I'll
look at it. You can also try to use 'Prepare' to re-create the 2D
locations and see if it helps (don't forget 'apply' and 'save').
On Fri, Nov 11, 2011 at 9:13 AM, Anette Giani
<[log in to unmask]> wrote:
> Dear all,
> For the analysis of my MEG data, I would like to calculate the grand mean
> over all subjects. However, for technical reasons, data of one subject
> contains 1 channel less than the data of the others. Is there a way to
> choose the channels for which the grand mean should be calculated? I tried
> to crop the data of the remaining subjects. However, after cropping it seems
> like 2d channel positions are lost. Hence, if I want to look at the topology
> of the cropped data a message appears: "Get 2d positions for these
> Looking forward to your suggestions!