<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body dir="auto"><div dir="ltr">Dear Mubeen,</div><div dir="ltr">The function you intend to use requires time dimension. What you provide is only power spectrum. </div><div dir="ltr">You could use <a href="https://www.fieldtriptoolbox.org/reference/ft_preproc_standardize/">https://www.fieldtriptoolbox.org/reference/ft_preproc_standardize/</a> prior to your freqanalysis if standardized z-scores is what you need. </div><div dir="ltr"><br></div><div dir="ltr">Good luck,</div><div dir="ltr">Tzvetan</div><div dir="ltr"><br></div><div dir="ltr"><br><blockquote type="cite">Am 3/28/21 um 07:16 schrieb mubeen afzal <mubafzal@hotmail.com>:<br><br></blockquote></div><blockquote type="cite"><div dir="ltr">
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<pre style="overflow-wrap:break-word">Hi all,</pre>
<pre style="overflow-wrap:break-word"><span style="color: rgb(0, 0, 0); font-family: Calibri, Helvetica, sans-serif; font-size: 12pt;">In brainstorm there is option of baseline normalizing (zscore or db or other methods) the timeseries epochs/trials of interest before frequency analysis allowing visual comparisons and further frequency analysis of the normalized epochs</span><br></pre>
<pre style="overflow-wrap:break-word">The normalization function function [freq] = ft_freqbaseline(cfg, freq) doesnt allow normalizing a freq output dimord structure with chan_freq derived using 'mtmfft' method</pre>
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I get this error message - </div>
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<i>"the call to "ft_freqanalysis" took 1 seconds</i>
<div><i>the input is freq data with 21 channels, 191 frequencybins and no timebins</i></div>
<div><i>Error using ft_freqbaseline (line 146)</i></div>
<i>unsupported data dimensions: chan_freq"</i></div>
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Is there a way around this?</div>
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Thanks all.</div>
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Mubeen</div>
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