[Mne_analysis] Problem with plotting annotations

[Nico Adelhöfer]

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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