Data Extraction using ginput

2 views (last 30 days)
Sai Gudlur
Sai Gudlur on 1 Jan 2019
Commented: madhan ravi on 2 Jan 2019
Hello Everyone,
Happy new Year! To begin with. My question is i am using ginput and trying to acquire data of a plot. But the issue i am facing is when i try to aquire data between two selected points it gives me data through out the plot where the (find data points) condition is met rather then just between the selected points. Any help would be appreciated. Have attached my code, data file and also the figure for better understanding.
Thanks
Anand
[filename,pathname] = uigetfile('*.xlsx');
fullfilename = fullfile(pathname,filename);
A = xlsread(fullfilename);
Torque = movmean(A(:,1 ),50);
Angle = movmean(A(:,2),50);
plot(Torque);
[a,b] = ginput(2);
str1 = b(1);
fin1 = b(2);
i = find(Torque > str1 & Torque < fin1);
Torque1 = Torque(i);
Angle1 = Angle(i);
T = table(Torque1,Angle1);
ginput_Plot.jpg

Accepted Answer

Image Analyst
Image Analyst on 1 Jan 2019
Maybe you mean:
startingIndex = a(1);
endingIndex = a(2);
x = 1 : length(Torque);
mask = find(x >= startingIndex & x < endingIndex);
Torque1 = Torque(mask);
Angle1 = Angle(mask);
  2 Comments
Sai Gudlur
Sai Gudlur on 1 Jan 2019
Thanks a lot. Learnt my mistake was i wasn't assigning it to variable x which count of Torque and then have it index.
madhan ravi
madhan ravi on 2 Jan 2019
+1 , 50000 points reached!!

Sign in to comment.

More Answers (0)

Categories

Find more on Data Exploration in Help Center and File Exchange

Products


Release

R2018b

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!