# Question about TF analysis **URL:** \ **Category:** Mailing List Archive (read-only)\ **Tags:** list-archive\ **Created:** [December 9, 2018, 8:36am UTC](https://mne.discourse.group/t/question-about-tf-analysis/1679 "2018-12-09T08:36:19Z")\ **Posts on this page:** 1\ **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:** [December 9, 2018, 8:36am UTC](https://mne.discourse.group/t/question-about-tf-analysis/1679/1 "2018-12-09T08:36:19Z")
External Email - Use Caution Hi~     I want to know how to set the n\_cycles and freqs with the command \*tfr\_morlet\*. when I set the \*n\_cycles=5, freqs=np.arange(1,21,1)\*, there is an error: \*ValueError: At least one of the wavelets is longer than\* \*the signal. Use a longer signal or shorter wavelets\*. This is my first experience doing TF analysis, wish you could give me some help. Thanks a lot. Tao Xia -------------- next part -------------- An HTML attachment was scrubbed... URL: [http://mail.nmr.mgh.harvard.edu/pipermail/mne\_analysis/attachments/20181209/40aaa219/attachment.html](http://mail.nmr.mgh.harvard.edu/pipermail/mne_analysis/attachments/20181209/40aaa219/attachment.html)