Extracting data from txt file
2 Ansichten (letzte 30 Tage)
Ältere Kommentare anzeigen
Hi, I have a raw data file where there's two variable - F & R. I would like to extract the specific value of R when F is at 5, 10, 15, 20. what should I do? Please help me with the coding. I'm new in Matlab. Thank you.
1 Kommentar
Walter Roberson
am 13 Mai 2020
What does the data file look like? Please be specific about information such as whether it is tab separated columns.
Will those exact values of F appear in the file, or do you need to interpolate the values?
Antworten (1)
Walter Roberson
am 13 Mai 2020
Bearbeitet: Walter Roberson
am 13 Mai 2020
filename = 'AppropriateFileName';
data = sortrows( load(filename) );
F = data(:,1);
R = data(:,2);
probe_at = 5:5:20;
interpolated_R = interp1(F, R, probe_at);
I note that you want F at 15 and 20, which are beyond the range of F in the sample you post. If the data does not extend as far as 15 or 20 then the above code would return NaN in those positions. Extrapolation is possible by adding extra options to the interp1() call, but you should consider more about what kind of extrapolation is appropriate; I can see that you have something non-linear going on in the response.
0 Kommentare
Siehe auch
Kategorien
Mehr zu Variables 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!