my question is after ploting (x,y) , i want to count the number of signals that is above 0.5 at time for example : 1.05e-7, how to do that in matlab
1 view (last 30 days)
Show older comments
i want to count the values from data set (:,2:5) that is above 0.5 at specific time
data_1 = load('ay.csv')
x = data_1(:,1)
y = data_1(:,2:5)
plot(x,y)
count=0
n= 17059
m=4
for r=1:n
for c=1:m
if y(r,c)> 0.5 & (x == 1.05e-7)
count= count+1
end
end
end
count
2 Comments
Jan
on 14 Sep 2022
What is your question?
Does load('ay.csv') work? load works with MAT files and a specific set of text files only.
x is a vector. Then x==1.05e-7 is a vector also. The if condition must be a scalar. Therefore Matlab inserts an all() implicitly. But is this wanted?
Remember that comparisons of floating point numbers are fragile. 1.05e-7 and 1.0499999999e-7 might be displayed as the same value in the command wirndow, but they differ. Using a range is safer.
Answers (1)
See Also
Categories
Find more on Large Files and Big Data in Help Center and File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!