本文介绍: The dates are spaced one calendar month apart. However, the months have different lengths, so the usage data is spaced slightly unevenly. To use the dates as sample points, you need to specify the window length as a duration.附加练习有何不同，”SamplePoints“，到底该怎么用？
MATLAB Fundamentals>Common Data Analysis Techniques>Smoothing Data> (3/5) Smoothing Electricity Data
数据准备：This code sets up the activity.
说明1：
The table edata contains monthly electricity usage, in MWh, for the U.S., separated by sector. The matrix sectorUsage contains the consumption for three sectors (residential, commercial, and industrial). The vector total contains the total consumption. The months are stored in the datetime vector dates.
You can smooth the data using the smooth data function.
When the data are evenly sampled, you do not need to specify the sample points.
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