how to fit trend line in time series
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Hi. I plotted a figure of my time series but I want to calculate and fit in the trend line.
![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/557802/image.png)
![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/557807/image.png)
Can I use the polyfit to do this?
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