how to extract the time interval where variables start to increase

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bay rem
bay rem 2016 年 2 月 27 日
回答済み: Image Analyst 2016 年 2 月 28 日
i have a function and i plot for every moment results of this function, such the image indicate, ,and then i want to detect the moment where variables start to increase and stop increasing

回答 (1 件)

Image Analyst
Image Analyst 2016 年 2 月 28 日
Try this:
indexes = find(signal < -50);
That will tell you whenever an signal value is less than -200. If you want to find only stretches where it meets the condition for some minimum number of elements, you can use bwareaopen() to throw out short stretches.

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