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<h2 data-label="606982" class="ltx_title_subsection"> Differentiation</h2><div>One of the most common reasons for data smoothing is to then be able to differentiate the data.&nbsp; As noted earlier in section&nbsp;<span class="au-ref raw v1">\ref{201802}</span>, one of the advantages of&nbsp; using&nbsp;<code>scipy.signal.savgol_filter</code> is that the data smoothing and differentiation can be done in a single step (when working with evenly spaced data). Here is an example (for the data originally shown in Fig. <span class="au-ref raw v1">\ref{987576}</span>): </div><div></div><div></div>