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Hi Xianghong, 
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<div class="">if you are using the imagesc function to plot, you just need to adjust the axis parameters,</div>
<div class="">for example </div>
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<div style="margin: 0px; font-size: 11px; font-family: Courier;" class="">imagesc((analysis.ERP.times), (ERP.freqs), GROUP_ERSP) </div>
<div style="margin: 0px; font-size: 11px; font-family: Courier;" class="">axis([-700 700 2 50])  </div>
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<span style="color: #000000" class="">set(gca,</span>'YDir'<span style="color: #000000" class="">,</span>'normal'<span style="color: #000000" class="">)</span></div>
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<span style="color: #000000" class="">title(</span>'ERSP Congruent'<span style="color: #000000" class=""> ,</span>'FontSize'<span style="color: #000000" class="">,17);</span></div>
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<div style="margin: 0px;" class="">if you use the newtimef function you have to specify the parameters in the function, such as â€˜maxfreq': </div>
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<div style="margin: 0px;" class=""><a href="https://sccn.ucsd.edu/svn/software/branches/eeglab11/functions/timefreqfunc/newtimef.m" class="">https://sccn.ucsd.edu/svn/software/branches/eeglab11/functions/timefreqfunc/newtimef.m</a></div>
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<div style="margin: 0px;" class="">Best, </div>
<div style="margin: 0px;" class="">Clemens </div>
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<div class="">On 17 Jul 2015, at 00:34, Xianghong <<a href="mailto:xianghong@hmri.org" class="">xianghong@hmri.org</a>> wrote:</div>
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<div class="">Hi, <br class="">
<br class="">
I try to use their time-frequency analysis, by using the plot/time-frequency transforms/channel time-frequency. However, the figure generated only show the frequency range of 15-50 Hz. We want to see the range at least from 1 Hz to 50 Hz, how to rescale the
 T-F plot? <br class="">
Thanks,<br class="">
Best,<br class="">
<br class="">
Xianghong<br class="">
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