Adding points onto graph with only X values

Question

Allen Antony 2020-10-29

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回答： Anudeep Kumar 2020-11-2

I filtered a graph and then used the findpeaks function to get the x values for the peaks. However when I filtered my graph the y-values changed from 700 to 1500 range to a -400 to 400 range. The x values are the correct, however I am not sure how to use text() to label points on the unfiltered data, or if there was another function I could use.

Thanks

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Answer 1

Anudeep Kumar 2020-11-2

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Hey,

This function will help you to perform the required task. Once you have obtained the x and y coordinates of the peak. You can use the function as follows:

If x coordinate of the peak is 5 and y is 4 and the text you want to print is 'Peak'

text(5,4,'Peak');

This is the link to the documentation of the function text().