# How can I plot the evoked conditions better **URL:** \ **Category:** Support & Discussions\ **Tags:** eeg, visualization, evoked\ **Created:** [April 6, 2023, 4:29am UTC](https://mne.discourse.group/t/how-can-i-plot-the-evoked-conditions-better/6683 "2023-04-06T04:29:09Z")\ **Posts on this page:** 12\ **Page:** 1
**Author:** ![Esha](https://avatars.discourse-cdn.com/v4/letter/e/9de053/32.png) [@Esha](https://mne.discourse.group/u/Esha)\ **Post date:** [April 6, 2023, 4:29am UTC](https://mne.discourse.group/t/how-can-i-plot-the-evoked-conditions-better/6683/1 "2023-04-06T04:29:09Z")
I am working on comparing evoked parameter for two conditions but the signal activity of the signal is not really visible. I would be grateful if I could get suggestions on how can I plot the signal in a way that the signal activity is actually visible and comparable. My code - evokeds = dict( Up\_and\_Down\_Eye\_Movements=evoked\_Up\_and\_Down\_Eye\_Movements, Side\_to\_Side\_Eye\_Movements=evoked\_Side\_to\_Side\_Eye\_Movements, ) picks = [‘Channel 1’, ‘Channel 2’, ‘Channel 3’, ‘Channel 4’] mne.viz.plot\_compare\_evokeds(evokeds, picks=picks, combine=None, ylim=dict(eeg=[-50, 50]), ci=False, invert\_y=False, truncate\_xaxis=False) ![evk comparison](https://global.discourse-cdn.com/free1/uploads/mne/original/2X/3/31e50c0e80bc0fedd7383110e0878fcacb00d61d.png) Thank you! ---
**Author:** ![wmvanvliet](https://yyz2.discourse-cdn.com/free1/user_avatar/mne.discourse.group/wmvanvliet/32/100_2.png) [@wmvanvliet](https://mne.discourse.group/u/wmvanvliet)\ **Post date:** [April 6, 2023, 2:18pm UTC](https://mne.discourse.group/t/how-can-i-plot-the-evoked-conditions-better/6683/2 "2023-04-06T14:18:40Z")
Try this: ```python evoked_Up_and_Down_Eye_Movements = evoked_Up_and_Down_Eye_Movements.apply_baseline((0, 0.5)) evoked_Side_to_Side_Eye_Movements = evoked_Side_to_Side_Eye_Movements.apply_baseline((0, 0.5)) evokeds = dict( Up_and_Down_Eye_Movements=evoked_Up_and_Down_Eye_Movements, Side_to_Side_Eye_Movements=evoked_Side_to_Side_Eye_Movements, ) picks = [‘Channel 1’, ‘Channel 2’, ‘Channel 3’, ‘Channel 4’] mne.viz.plot_compare_evokeds(evokeds, picks=picks, combine=None, ylim=dict(eeg=[-500E-6, 500E-6]), ci=False, invert_y=False, truncate_xaxis=False) ``` ---
**Author:** ![Esha](https://avatars.discourse-cdn.com/v4/letter/e/9de053/32.png) [@Esha](https://mne.discourse.group/u/Esha)\ **Post date:** [April 7, 2023, 6:45am UTC](https://mne.discourse.group/t/how-can-i-plot-the-evoked-conditions-better/6683/3 "2023-04-07T06:45:44Z")
Thank you so much for your response! I tried the solution but I am getting error _**‘TypeError: apply\_baseline() takes from 1 to 2 positional arguments but 3 were given’.**_ Not sure why this is coming up since only 2 arguments were passed. ---
**Author:** ![wmvanvliet](https://yyz2.discourse-cdn.com/free1/user_avatar/mne.discourse.group/wmvanvliet/32/100_2.png) [@wmvanvliet](https://mne.discourse.group/u/wmvanvliet)\ **Post date:** [April 7, 2023, 7:06am UTC](https://mne.discourse.group/t/how-can-i-plot-the-evoked-conditions-better/6683/4 "2023-04-07T07:06:15Z")
My bad. I’ve updated the code above by adding some () that were missing. ---
**Author:** ![Rosyl](https://yyz2.discourse-cdn.com/free1/user_avatar/mne.discourse.group/rosyl/32/1943_2.png) [@Rosyl](https://mne.discourse.group/u/Rosyl)\ **Post date:** [April 11, 2023, 1:18pm UTC](https://mne.discourse.group/t/how-can-i-plot-the-evoked-conditions-better/6683/5 "2023-04-11T13:18:22Z")
@Esha I am curious if this fixed the issue, could you confirm if this was the case (I think you can also mark an answer as the solution). Thank you! ---
**Author:** ![Esha](https://avatars.discourse-cdn.com/v4/letter/e/9de053/32.png) [@Esha](https://mne.discourse.group/u/Esha)\ **Post date:** [April 13, 2023, 5:53am UTC](https://mne.discourse.group/t/how-can-i-plot-the-evoked-conditions-better/6683/6 "2023-04-13T05:53:52Z")
Thank you for the correction! I am still getting an error _ **“ValueError: Image size of 722x68446 pixels is too large. It must be less than 2^16 in each direction.”** _ _ **\
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**Author:** ![Esha](https://avatars.discourse-cdn.com/v4/letter/e/9de053/32.png) [@Esha](https://mne.discourse.group/u/Esha)\ **Post date:** [April 13, 2023, 5:55am UTC](https://mne.discourse.group/t/how-can-i-plot-the-evoked-conditions-better/6683/7 "2023-04-13T05:55:11Z")
Hey I am sorry , I am still getting a value error that the size of the image is too large. I’ll update as soon as I find a solution. ---
**Author:** ![wmvanvliet](https://yyz2.discourse-cdn.com/free1/user_avatar/mne.discourse.group/wmvanvliet/32/100_2.png) [@wmvanvliet](https://mne.discourse.group/u/wmvanvliet)\ **Post date:** [April 15, 2023, 8:01am UTC](https://mne.discourse.group/t/how-can-i-plot-the-evoked-conditions-better/6683/8 "2023-04-15T08:01:05Z")
> [@wmvanvliet](#): > > `ylim=dict(eeg=[-500E-6, 500E-6])` perhaps that should have been `ylim=dict(eeg=[-500, 500])` instead. I don’t know of the top of my head. ---
**Author:** ![Rosyl](https://yyz2.discourse-cdn.com/free1/user_avatar/mne.discourse.group/rosyl/32/1943_2.png) [@Rosyl](https://mne.discourse.group/u/Rosyl)\ **Post date:** [April 20, 2023, 9:06am UTC](https://mne.discourse.group/t/how-can-i-plot-the-evoked-conditions-better/6683/9 "2023-04-20T09:06:11Z")
@drammock, I have struggled with a similar issue so I was wondering if you could have a look at this post and have some advice? Many thanks! ---
**Author:** ![dasdiptyajit](https://yyz2.discourse-cdn.com/free1/user_avatar/mne.discourse.group/dasdiptyajit/32/4796_2.png) [@dasdiptyajit](https://mne.discourse.group/u/dasdiptyajit)\ **Post date:** [April 20, 2023, 6:56pm UTC](https://mne.discourse.group/t/how-can-i-plot-the-evoked-conditions-better/6683/10 "2023-04-20T18:56:41Z")
@Rosyl Can you share your full code snippet? Is it a bug for y-axis limit or an error for saving the matplotlib figure? best, Dip ---
**Author:** ![Rosyl](https://yyz2.discourse-cdn.com/free1/user_avatar/mne.discourse.group/rosyl/32/1943_2.png) [@Rosyl](https://mne.discourse.group/u/Rosyl)\ **Post date:** [April 21, 2023, 8:16am UTC](https://mne.discourse.group/t/how-can-i-plot-the-evoked-conditions-better/6683/11 "2023-04-21T08:16:38Z")
@dasdiptyajit thank you for your reply, but I currently don’t have an example at hand. I remembered having the issue a while ago and found this post later on, so I thought to follow up because it’s a useful post for more novice users of mne-nirs (like me) to learn. (if I do stumble across it again, I’ll make a new thread and refer to this thread.) Thanks! ---
**Author:** ![dasdiptyajit](https://yyz2.discourse-cdn.com/free1/user_avatar/mne.discourse.group/dasdiptyajit/32/4796_2.png) [@dasdiptyajit](https://mne.discourse.group/u/dasdiptyajit)\ **Post date:** [April 21, 2023, 1:27pm UTC](https://mne.discourse.group/t/how-can-i-plot-the-evoked-conditions-better/6683/12 "2023-04-21T13:27:56Z")
I see. I am afraid that I can’t help much without looking at the code. I think its not an issue with MNE but rather something to do with plot/saving the figure. Feel free to tag me if you have something in your hand that can reproduce the issue. best,