How can I make spectrum plot without confidence intervals?
If you are using the spectrum/specplot functions in the Signal Processing Toolbox, and you do not want the confidence intervals plotted along with your PSD, you have two options: 1. Use the psd and csd functions, instead. Calling either of these functions without an output argument will cause them to generate a power plot without confidence intervals. 2. Modify the output of spectrum to set the confidence ranges to NaN .
