Picking data from graph?
3 Ansichten (letzte 30 Tage)
Ältere Kommentare anzeigen
Nurfaiz Fathurrahman
am 22 Nov. 2021
Kommentiert: Nurfaiz Fathurrahman
am 23 Nov. 2021
I have a sample signal below, I just want to retrieve the data in the red box for the next step of processing, how do I do it?
![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/808629/image.png)
4 Kommentare
Walter Roberson
am 22 Nov. 2021
How should the program know where to start extracting? How should the program know where to stop extracting ?
Is the time range fixed? Have the times been input by the user? Does the program need to detect the first minima and extract everything to the sixth minima ?
Akzeptierte Antwort
Bjorn Gustavsson
am 22 Nov. 2021
If you have the signal S, the corresponding sample-times t and the start and stop-times t1 and t2 you can select the signal in the intervall:
S1to2 = S(t1<t&t<=t2);
If you want to select the time-interval from the graph, have a look at the help and documentation of ginput, it is a function that allows you to select points in graphs. You could use that to select 2 points (you will/can get bot the x and y-values of selected points) to give you t1 and t2.
HTH
Weitere Antworten (0)
Siehe auch
Kategorien
Mehr zu Specifying Target for Graphics Output finden Sie in Help Center und File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!