[Mne_analysis] Problem with plotting annotations

[Mainak Jas]

This might be an issue with the EEG average reference.

Can you turn of proj and see if you still have the same problem? The button
is at the lower right corner.

Mainak

On Sun, Aug 14, 2016 at 4:03 PM, Nico Adelhöfer <nico.adelhoefer at st.ovgu.de>
wrote:

> Fantastic, it works. Thanks a lot for the help and support! :)
>
> Another issue unrelated to annotations: When I choose two channels and
> plot them, the second channel looks actually exactly like a mirrored
> version of the first. But it seems that it is only plotting and only
> when I pick 2 channels, not 3 or another number. This is my code:
>
> raw = mne.io.read_raw_fif(path+fname, preload=True)
> ch = ['F3','F4']
> raw.pick_channels(ch)
> raw.plot() # 2nd channel looks exactly mirrored
> # I think it is an issue of plotting, not on the data-level:
> probe1 = raw[0][0][0][0] + raw[1][0][0][0]
> probe2 = raw[0][0][0][10] + raw[1][0][0][10]
> print(probe1 - probe2) # not zero
>
> This is not urgent, but I'm curious if this is a known issue.
>
> Nico
>
>
>
> Quoting Mainak Jas <mainakjas at gmail.com>:
>
> > On Sat, Aug 13, 2016 at 7:51 PM, Nico Adelhöfer <
> nico.adelhoefer at st.ovgu.de>
> > wrote:
> >
> >> For me it now says that the name 'int32' is not defined.
> >
> >
> > You might have to do np,int32 then.
> >
> > Mainak
> >
> >
> >> When I
> >> exclude the dtype parameter, I get no error when plotting. :) But now
> >> I also don't see any annotations in the plot.
> >>
> >>
> >>
> >> Quoting Mainak Jas <mainakjas at gmail.com>:
> >>
> >> > okay. There seems to be some problem with the date in your measurement
> >> info.
> >> >
> >> > This should fix it:
> >> >
> >> > raw.info['meas_date'] = np.array([1463353331, 0], dtype=int32)
> >> >
> >> > Let us know if you still get the error after that.
> >> >
> >> > Mainak
> >> >
> >> > On Sat, Aug 13, 2016 at 1:23 AM, Nico Adelhöfer <
> >> nico.adelhoefer at st.ovgu.de>
> >> > wrote:
> >> >
> >> >> Hello,
> >> >>
> >> >> I get:
> >> >> array([1463353331])
> >> >>
> >> >> Nico
> >> >>
> >> >>
> >> >> Quoting Mainak Jas <mainakjas at gmail.com>:
> >> >>
> >> >> > Hi Nico,
> >> >> >
> >> >> > Before we try to debug any further, can you let us know what
> >> >> > raw.info['meas_date']
> >> >> > looks like in your data?
> >> >> >
> >> >> > Mainak
> >> >> >
> >> >> > On Thu, Aug 11, 2016 at 7:21 PM, Nico Adelhöfer <
> >> >> nico.adelhoefer at st.ovgu.de>
> >> >> > wrote:
> >> >> >
> >> >> >> Hello,
> >> >> >>
> >> >> >> can someone tell me what the problem might be here? When trying to
> >> >> >> plot annotations, I get an IndexError in the file annotations.py:
> >> >> >>
> >> >> >> --> 122         meas_date = meas_date[0] + meas_date[1] / 1000000.
> >> >> >>
> >> >> >> My commands are:
> >> >> >>
> >> >> >> onset = [1] # also tried [1 + raw.first_samp]
> >> >> >> dur = [5]
> >> >> >> raw.annotations = mne.Annotations(onset, dur, 'bad')
> >> >> >> raw.plot() # here comes the error
> >> >> >>
> >> >> >> The raw file here is fif. I saved an edf using raw.save, cutting
> >> parts
> >> >> >> from the beginning and the end of the recording. In the edf file
> >> there
> >> >> >> is no error.
> >> >> >>
> >> >> >> Thanks,
> >> >> >> Nico
> >> >> >>
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