MATLAB: What should I do with NaN

data processingdigital filtering

First time being in the forum…
I have a set of EMG data (with a column of time and a column of corresponding EMG data). Unfortunately, there were missing data points during the data collection(so those data do not exist in my data set) and so I substituted those point with NaN.
Here's the problem: if I want to filter the EMG data, it will give out a column of NaN because my original vector contains NaN. So what should I substitute with the missing EMG data point instead?
Thank you

Best Answer

You could interpolate the signal at the points that are NaN.
One convenient routine for that is John D'Errico's File Exchange contribution inpaint_nan
Related Question