mne_kit2fiff and the 2GB file size limit

✉️ Mailing List Archive (read-only)
1

Hi,

There's a 2GB file limit on FIFF files, and unfortunately I have hit this
limit trying to convert a KIT file using mne_kit2fiff. Some of the other
tools in the MNE package have options to deal with this situation, but I
can't seem to find anything relevant for mne_kit2fiff. Is there an easy
workaround for this issue?

Thanks,
Tal
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://mail.nmr.mgh.harvard.edu/pipermail/mne_analysis/attachments/20110412/d786d981/attachment.html

2

Hi Tal,

it might be a stupid answer but would your analysis still be valid
if you downsample your data before doing the conversion?
Out of curiosity, how big is the input file?

Alex

3

Downsampling the data is not a bad option, but it would make my life easier
if I could use my existing pipeline as is.

The size of the original SQD file is around 1.3GB. That's about an hour's
worth of data, sampled at 1000Hz.

4

do you have a way to downsample the original SQD file before conversion?

but someone might have a better suggestion tomorrow...

Alex

5

Hi Tal,

Data packing in FIF file is in 2 formats either 16 bit or 32 bit, since
your original file was 1.3GB now it is more then 2GB it only means your
file is up-converted to 32 bit.

Do you know how many bits original data is in.

Sheraz