<div dir="ltr"><div><div>Dear Lucy,<br><br></div>It seems what you want to do is to use the hierarchical epochs selection. If you have an epochs object which contains condA, condB, condC and condD, you can get epochs of condE by simply using epochs['condA', 'condB']. Please take a look at the MNE reference API for the epochs object: <a href="http://martinos.org/mne/stable/generated/mne.Epochs.html#mne.Epochs">http://martinos.org/mne/stable/generated/mne.Epochs.html#mne.Epochs</a> (look at the Notes section). Does this solve your problem?<br><br></div><div>Best regards,<br></div><div>Mainak<br></div></div><div class="gmail_extra"><br><div class="gmail_quote">On Thu, Feb 18, 2016 at 10:27 AM, Lucy MacGregor <span dir="ltr"><<a href="mailto:Lucy.MacGregor@mrc-cbu.cam.ac.uk" target="_blank">Lucy.MacGregor@mrc-cbu.cam.ac.uk</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
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<p class="MsoNormal"><span style="font-size:9.0pt;font-family:"Verdana","sans-serif"">Dear MNE Python users,<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:9.0pt;font-family:"Verdana","sans-serif""><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-size:9.0pt;font-family:"Verdana","sans-serif""><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-size:9.0pt;font-family:"Verdana","sans-serif"">I would like to combine event codes to create a number of new events whilst retaining the originals. E.g.,<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:9.0pt;font-family:"Verdana","sans-serif""><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-size:9.0pt;font-family:"Verdana","sans-serif"">CondA = 11<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:9.0pt;font-family:"Verdana","sans-serif"">CondB = 12<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:9.0pt;font-family:"Verdana","sans-serif"">CondC = 13<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:9.0pt;font-family:"Verdana","sans-serif"">CondD = 14<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:9.0pt;font-family:"Verdana","sans-serif"">CondE = 11,12<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:9.0pt;font-family:"Verdana","sans-serif"">CondF = 13,14<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:9.0pt;font-family:"Verdana","sans-serif""><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-size:9.0pt;font-family:"Verdana","sans-serif""><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-size:9.0pt;font-family:"Verdana","sans-serif"">Is there a straightforward way to do this? I have seen this thread<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:9.0pt;font-family:"Verdana","sans-serif""><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-size:9.0pt;font-family:"Verdana","sans-serif""><a href="https://mail.nmr.mgh.harvard.edu/pipermail/mne_analysis/2013-April/001498.html" target="_blank">https://mail.nmr.mgh.harvard.edu/pipermail//mne_analysis/2013-April/001498.html</a><u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:9.0pt;font-family:"Verdana","sans-serif""><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-size:9.0pt;font-family:"Verdana","sans-serif""><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-size:9.0pt;font-family:"Verdana","sans-serif"">Using mne.event.merge_events works fine when I was just creating one new event (as does the alternative method of combining events at the evoked stage) but I’m unsure of the
most sensible way to proceed given I want to create multiple new events. I originally did this:<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:9.0pt;font-family:"Verdana","sans-serif""><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-size:9.0pt;font-family:"Verdana","sans-serif"">events=mne.event.merge_events(events, [11,12], 1112, replace_events=False)<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:9.0pt;font-family:"Verdana","sans-serif"">events=mne.event.merge_events(events, [13,14], 1314 replace_events=False)<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:9.0pt;font-family:"Verdana","sans-serif""><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-size:9.0pt;font-family:"Verdana","sans-serif"">but then, because I’m not replacing events, I end up with multiple copies of all events (even those not included in the merge_events function) at a given sample point, which
isn’t ideal.<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:9.0pt;font-family:"Verdana","sans-serif""><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-size:9.0pt;font-family:"Verdana","sans-serif"">As a new MNE Python user (I previously used MNE) I would be grateful for any advice as the best way to do this.<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:9.0pt;font-family:"Verdana","sans-serif""><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-size:9.0pt;font-family:"Verdana","sans-serif""><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-size:9.0pt;font-family:"Verdana","sans-serif"">Thank you,<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:9.0pt;font-family:"Verdana","sans-serif""><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-size:9.0pt;font-family:"Verdana","sans-serif"">Lucy MacGregor<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:9.0pt;font-family:"Verdana","sans-serif""><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-size:9.0pt;font-family:"Verdana","sans-serif""><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-size:9.0pt;font-family:"Verdana","sans-serif";color:#a6a6a6">******************************************************************<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:9.0pt;font-family:"Verdana","sans-serif";color:#a6a6a6">Lucy MacGregor<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:9.0pt;font-family:"Verdana","sans-serif";color:#a6a6a6">MRC Cognition and Brain Sciences Unit<u></u><u></u></span></p>
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<p class="MsoNormal"><span style="font-size:9.0pt;font-family:"Verdana","sans-serif";color:#a6a6a6">Tel: 01223 355294 Ext 860<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:9.0pt;font-family:"Verdana","sans-serif";color:#a6a6a6"><a href="http://www.mrc-cbu.cam.ac.uk/people/lucy.macgregor/" target="_blank"><span style="color:blue">http://www.mrc-cbu.cam.ac.uk/people/lucy.macgregor/</span></a><u></u><u></u></span></p>
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