[Mne_analysis] raw.plot() not working for EGI data file

[Teon Brooks]

Hi Le,

I'm unable to recreate this error using our test file.

```

raw = mne.io.read_raw_egi('/Users/teon/packages/mne-python/mne/io/egi/te

   ...: sts/data/test_egi.raw')

raw.plot()

```
When I do an isinstance(raw, mne.io.BaseRaw), it returns True. Could you
provide a gist and a sample file to recreate the problem?



teon <http://teonbrooks.github.io>
--
twitter: @teon_io <http://www.twitter.com/teon_io>

On Mon, Apr 24, 2017 at 10:45 AM, Le Wang <lwang at bu.edu> wrote:

> Hi, MNE-users,
>
> I use mne.io.read_raw_egi to load the simple binary files from EGI into a
> raw object. Then when I use raw.plot(), it complains that "ValueError: Must
> supply either Raw or Epochs" (Line 1492 in utils.py in the function
> "_compute_scalings"). The error is raised because mne doesn't consider the
> raw object created from EGI as an instance of the BaseRaw class.
> "type(raw)" returns mne.io.egi.egi.RawEGI.
>
> I only started to see this error after a recent update of the mne from
> 0.10 to 0.15.dev0, and raw.plot() worked fine for EGI files in my previous
> version of mne.
>
> I wonder if anyone knows a solution to this problem. Thank you!
>
> Best
>
> Le
>
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