# plot sensors connectivity error **URL:** \ **Category:** Mailing List Archive (read-only)\ **Tags:** list-archive\ **Created:** [April 19, 2013, 1:09pm UTC](https://mne.discourse.group/t/plot-sensors-connectivity-error/572 "2013-04-19T13:09:39Z")\ **Posts on this page:** 2\ **Page:** 1
**Author:** ![system](https://global.discourse-cdn.com/free1/uploads/mne/original/1X/85cc6bd2b69cb698a166dc6d880fb550510d0144.jpeg) [@system](https://mne.discourse.group/u/system)\ **Post date:** [April 19, 2013, 1:09pm UTC](https://mne.discourse.group/t/plot-sensors-connectivity-error/572/1 "2013-04-19T13:09:39Z")
Hi MNEers, When I tried to run plot\_sensors\_connectivity.py I got the following error, Computes the Phase Lag Index (PLI) between all gradiometers and shows the connectivity in 3D using the helmet geometry. The left visual stimulation data are used which produces strong connectvitiy in the right occipital sensors. Opening raw data file F:\TDDOWNLOAD\MNE\_sample\_data\MNE-sample-data-processed\MN E-sample-data-python/MEG/sample/sample\_audvis\_filt-0-40\_raw.fif...     Read a total of 4 projection items:         PCA-v1 (1 x 102) idle         PCA-v2 (1 x 102) idle         PCA-v3 (1 x 102) idle         Average EEG reference (1 x 60) idle     Range : 6450 ... 48149 = 42.956 ... 320.665 secs Ready. 4 projection items activated 73 matching events found Connectivity computation... Reading 606 ... 711 = 4.036 ... 4.735 secs... [done] Applying baseline correction ... (mode: mean) Reading 1026 ... 1131 = 6.833 ... 7.532 secs... [done] Applying baseline correction ... (mode: mean) Traceback (most recent call last):   File "plot\_sensor\_connectivity.py", line 56, in \     mt\_adaptive=False, n\_jobs=2)   File "D:\Python\lib\site-packages\mne-0.6.git-py2.7.egg\mne\utils.py", line 27 9, in dec     return function(\*args, \*\*kwargs)   File "D:\Python\lib\site-packages\mne-0.6.git-py2.7.egg\mne\connectivity\spect ral.py", line 694, in spectral\_connectivity     tmax\_idx = n\_times\_in UnboundLocalError: local variable 'n\_times\_in' referenced before assignment Anyone ever encounter the similar error info? How to solve it ? Thank you in advance. Best wishes, Junpeng ------------------ Original ------------------ ---
**Author:** ![system](https://global.discourse-cdn.com/free1/uploads/mne/original/1X/85cc6bd2b69cb698a166dc6d880fb550510d0144.jpeg) [@system](https://mne.discourse.group/u/system)\ **Post date:** [April 19, 2013, 1:19pm UTC](https://mne.discourse.group/t/plot-sensors-connectivity-error/572/2 "2013-04-19T13:19:52Z")
Hi Junpeng, This was a bug, it has been fixed in the meanwhile, see [https://github.com/mne-tools/mne-python/pull/552](https://github.com/mne-tools/mne-python/pull/552) Updating your MNE-Python installation to the latest master from github will fix it. Best, Martin